Pablo Lorenzo-luis | Universidad de La Laguna (original) (raw)
Papers by Pablo Lorenzo-luis
![Research paper thumbnail of Complexes of the tripodal nitrilotrimethylenetrisphosphonic (H6L) and P,P',P''-triphenylnitrilotrimethylenetrisphosphinic (H3L) acids with the copper(II) ion. Synthesis and charaterization of [Hpy][Cu(H3L)(H2O)] and [Cu(HL)(py)]2.2Me2CO](https://attachments.academia-assets.com/41625634/thumbnails/1.jpg)
](Dalton Transactions, 2001
2001, Complexes of the tripodal nitrilotrimethylenetrisphosphonic (H6L) and P,P',P''-triphenylnit... more 2001, Complexes of the tripodal nitrilotrimethylenetrisphosphonic (H6L) and P,P',P''-triphenylnitrilotrimethylenetrisphosphinic (H3L) acids with the copper(II) ion. Synthesis and charaterization of [Hpy][Cu(H3L)(H2O)] and [Cu(HL)(py)]2.
Journal of Molecular Catalysis A: Chemical, 2015
] 3 , belongs to a transition metal hexacyanometallate family. Its electrochemical properties wer... more ] 3 , belongs to a transition metal hexacyanometallate family. Its electrochemical properties were revealed in 1978 when Neff reported the successful deposition of a thin layer on platinum foil. After that, numerous publications have appeared exploring its electrocatalytic properties and its applications in biomedical science. During the last decade, a great number of studies involving PB have appeared, using different biosensor substrates and different oxidase enzymes. Together with the facile modification of the electrode substrate and the low cost of production, this has led to an on-going replacement of the more common enzymatic detection method involving horseradish peroxidase. Its high electrocatalytic activity and low operating overpotential have contributed to the diversification of its use in enzyme-based biosensors and immunosensors. Based on these results, it is clear that PB and its analogues will have important roles in the future development of biomedical devices for next generation health-care strategies.
ChemInform, 2000
ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance t... more ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Coordination Chemistry Reviews, 1999
ABSTRACT
![Research paper thumbnail of Complexes of the tripodal nitrilotrimethylenetrisphosphonic (H6L) and P,P′,P″-triphenylnitrilotrimethylenetrisphosphinic (H3L°) acids with the copper(II) ion. Synthesis and characterization of [Hpy][Cu(H3L)(H2O)] and [Cu(HL°)(py)]2·2Me2CO](https://attachments.academia-assets.com/41625648/thumbnails/1.jpg)
](Journal of the Chemical Society, Dalton Transactions, 2001
The complexes [Hpy][Cu(H 3 L)(H 2 O)] 1 (L 6Ϫ = nitrilotrimethylenetrisphosphonate) and [Cu(HLЊ)(... more The complexes [Hpy][Cu(H 3 L)(H 2 O)] 1 (L 6Ϫ = nitrilotrimethylenetrisphosphonate) and [Cu(HLЊ)(py)] 2 ؒ2Me 2 CO 2 [(LЊ) 3Ϫ = P,PЈ,PЉ-triphenylnitrilotrismethylenetrisphosphinate)] have been isolated and characterized by X-ray crystallography, near IR-visible spectroscopy and magnetic measurements. The structure determination has shown the complexes to be constituted by monomeric and dimeric units respectively. In the monomer the metal atom is surrounded by the phosphonate ligand and a water molecule, with a geometry between a trigonal bipyramid and a square pyramid. The two copper atoms in the dimer are held together by an arm of the tripod ligand, with a pyridine molecule as additional ligand, and display octahedral geometry. The presence of monomeric and dimeric species in aqueous solutions of 1 and 2 has been shown by ESMS studies. The formation in water solution of the dimer [{Cu(H 3 L)} 2 ] 2Ϫ , as a minor species, has been supported by potentiometric measurements, whereas only the monomeric anion [CuLЊ] Ϫ has been ascertained to be present. In general the ligand H 3 LЊ forms less stable copper(II) complexes than H 6 L.
Acta Crystallographica Section C Crystal Structure Communications, 1995
ChemPhysChem, 2014
The cover picture shows enzyme-modified magnetic nanoparticles on the surface of a Prussian blue ... more The cover picture shows enzyme-modified magnetic nanoparticles on the surface of a Prussian blue (PB)-modified screen-printed electrode. The enzymatic response of the resulting biosensor was studied for the detection of glucose in blood samples, as described by P. Salazar et al. on p. 3742.
… de Ciencias:= Folia …, 2001
... Revista de la Academia Canaria de Ciencias: = Folia Canariensis Academiae Scientiarum, ISSN 1... more ... Revista de la Academia Canaria de Ciencias: = Folia Canariensis Academiae Scientiarum, ISSN 1130-4723, Vol. 13, Nº. 1-3, 2001 , págs. 105-113. Fundación Dialnet. Acceso de usuarios registrados. Acceso de usuarios registrados Usuario. Contraseña. Entrar. Mi Dialnet. ...
Inorganica Chimica Acta, 1999
Two new heptamolybdates, one containing calcium and imidazole and the other with urea and ammoniu... more Two new heptamolybdates, one containing calcium and imidazole and the other with urea and ammonium cations, have been prepared. X-ray crystallographic studies of single crystals of both compounds have been carried out. In the mixture of calcium and imidazole [(Himi) 4 ][Ca(H 2 O) 6 (m-O) 2 ][Mo 7 O 24 ]·2(imi)·3H 2 O (1), the calcium(II) cation is surrounded by six water molecules and two oxygen atoms from the polyanion, and bridges in trans position two [Mo 7 O 24 ] 6 − polyanions forming a linear composite with alternating Mo 7 O 24 and Ca(H 2 O) 6 units. The urea compound [CO(NH 2 ) 2 H] 3 (NH 4 ) 9 [Mo 7 O 24 ] 2 ·5[CO(NH 2 ) 2 ]·4H 2 O (2) presents [Mo 7 O 24 ] 6 − heptamolybdate anions bound by hydrogen bonds from NH 4 + , [CO(NH 2 )H] cations and H 2 O molecules. A new crystalline phase of a g-octamolybdate containing pyrazole coordinatively bound to molybdenum has also been prepared [(Hpyr) 4 ][(pyr) 2 (Mo 8 O 26 )]CH 3 COCH 3 ·2H 2 O (3). The structure has been solved by X-ray diffraction from a single crystal. The Mo N bond length is 2.262(3) A , . All compounds have been characterised by IR, 1 H NMR and thermal analysis.
Chemistry of Materials, 2002
2002 dielectric properties, magnetic properties dielectric properties, magnetic properties D 9000
Inorganica Chimica Acta, 2008
A new tubular metal-organic framework [Cu 2 (pcp) 2 (4,4 0 -bipy)] AE 5H 2 O (pcp = P,P 0 -diphen... more A new tubular metal-organic framework [Cu 2 (pcp) 2 (4,4 0 -bipy)] AE 5H 2 O (pcp = P,P 0 -diphenylmethylenediphosphinate) has been synthesized and characterized by single-crystal X-ray analysis, temperature-dependent X-ray powder diffraction (TDXD), thermogravimetric measurements and IR spectroscopy. The structure consists of polymeric nano-sized square channels, whose edges are constituted by infinite chains of metal ions bridged by phosphinate ligands. The chains are linked together by 4,4 0 -bipyridines, forming the walls of the channels. Solvent water molecules are located inside and outside the channels, all anchored through hydrogen bonds. The cross-section dimensions of the channels are approximately 10 · 10 Å 2 . The four guest molecules located inside the channels can be eliminated by gentle heating at ca. 80°C, restored in air, or in turn substituted by DMF through vapour exposition. The monohydrated phase [Cu 2 (pcp) 2 (4,4 0 -bipy)] AE H 2 O, which maintains the same polymeric framework as the title complex, remains stable till 260°C. Above this temperature the complex undergoes a solid state crystal-to-crystal rapid reaction, via loss of both the 4,4 0 -bipyridine and the remaining water and rearrangement of the coordinated pcp to give the previously reported [Cu(pcp)] polymeric framework.
Acta Crystallographica Section C Crystal Structure Communications, 1996
We have synthesized and characterized five new chlorochromate(VI) complexes of organic bases: 4,4... more We have synthesized and characterized five new chlorochromate(VI) complexes of organic bases: 4,4'-bipyridinium bis[chlorochromate(VI)], (C 10 H 10 N 2 )[CrO 3 Cl] 2 , 4-methylquinolinium chlorochromate(VI), (C 10 H 10 N)[CrO 3 Cl], 6-methylquinolinium chlorochromate(VI), (C ...
The synthesis of novel heterobimetallic derivatives of general formula [RuClCp(PPh(3))-μ-dmoPTA-1... more The synthesis of novel heterobimetallic derivatives of general formula [RuClCp(PPh(3))-μ-dmoPTA-1κP:2κ(2)N,N'-M(acac-κ(2)O,O')(2)] (M = Ni (3), Zn (4); dmoPTA = 3,7-dimethyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane) is described. The preparations of the ruthenium-cobalt analogue (M = Co (2)) and the starting compound [RuClCp(HdmoPTA-κP)(PPh(3))](CF(3)SO(3)) have been revised and their yield improved. Similar to 2, the solid state structures of 3 and 4 show that the dmoPTA-P and the dmoPTA-N(CH(3)) atoms are involved in the coordination to the {RuCpCl(PPh(3))} and {M(acac)(2)} moieties, respectively. The size of the diffusing units is almost the same for the three binuclear complexes, indicating that they exhibit similar solution structures. The diamagnetic ruthenium-zinc derivative was fully characterized in solution at 193 K by NMR as two diastereomeric pairs of enantiomers (R-Ru, Δ-Zn; R-Ru, Λ-Zn; S-Ru, Δ-Zn; S-Ru, Λ-Zn). Finally, the electrochemical properties of the complexes have been investigated by cyclic voltammetry.
Two new inorganic-organic polymeric hybrids [Sn(pcp)] and [Cu(pcp)], pcp=CH2(PhPO2)2(2-), have be... more Two new inorganic-organic polymeric hybrids [Sn(pcp)] and [Cu(pcp)], pcp=CH2(PhPO2)2(2-), have been synthesized and structurally characterized. The tin derivative has been obtained by reaction of the p,p'-diphenylmethylenediphosphinic acid (H2pcp) in water with SnCl2.2H2O, while the copper derivative has been synthesized through a hydrothermal reaction from the same H2pcp acid and Cu(O2CMe)2.H2O. The structures of these compounds have been solved "ab initio" by X-ray powder diffraction (XRPD) data. [Sn(pcp)] has a ladder-like polymeric structure, with tin(II) centers bridged by diphenylmethylenediphosphinate ligands, and alternating six- and eight-membered rings. The hemilectic coordination around the metal shows the tin(II) lone pair to be operative, resulting in significant interaction mainly with a C-C bond of one phenyl ring. The [Cu(pcp)] complex displays a polymeric columnar structure formed by two intersecting sinusoidal ribbons of copper(II) ions bridged by the bifunctional phosphinate ligands. The intersections of the ribbons are made of dimeric units of pentacoordinated copper ions. Crystal data for [Sn(pcp)]: monoclinic, space group P2(1)/c, a=11.2851(1), b=15.4495(6), c=8.6830(1) A, beta=107.546(1) degrees, V=1443.44(9) A, Z=4. Crystal data for [Cu(pcp)]: triclinic, space group P, a=10.7126(4), b=13.0719(4), c=4.9272(3) A, alpha=92.067(5), beta=95.902(7), gamma=87.847(4) degrees, V=685.47(7), Z=2. The tin compound has been characterized by 119Sn MAS NMR (magic-angle spinning NMR), revealing asymmetry in the valence electron cloud about tin. Low-temperature magnetic measurements of the copper compound have indicated the presence of weak antiferromagnetic interactions below 50 K.
] 3 , belongs to a transition metal hexacyanometallate family. Its electrochemical properties wer... more ] 3 , belongs to a transition metal hexacyanometallate family. Its electrochemical properties were revealed in 1978 when Neff reported the successful deposition of a thin layer on platinum foil. After that, numerous publications have appeared exploring its electrocatalytic properties and its applications in biomedical science. During the last decade, a great number of studies involving PB have appeared, using different biosensor substrates and different oxidase enzymes. Together with the facile modification of the electrode substrate and the low cost of production, this has led to an on-going replacement of the more common enzymatic detection method involving horseradish peroxidase. Its high electrocatalytic activity and low operating overpotential have contributed to the diversification of its use in enzyme-based biosensors and immunosensors. Based on these results, it is clear that PB and its analogues will have important roles in the future development of biomedical devices for next generation health-care strategies.
Dalton Transactions, 2001
2001, Complexes of the tripodal nitrilotrimethylenetrisphosphonic (H6L) and P,P',P''-triphenylnit... more 2001, Complexes of the tripodal nitrilotrimethylenetrisphosphonic (H6L) and P,P',P''-triphenylnitrilotrimethylenetrisphosphinic (H3L) acids with the copper(II) ion. Synthesis and charaterization of [Hpy][Cu(H3L)(H2O)] and [Cu(HL)(py)]2.
Journal of Molecular Catalysis A: Chemical, 2015
] 3 , belongs to a transition metal hexacyanometallate family. Its electrochemical properties wer... more ] 3 , belongs to a transition metal hexacyanometallate family. Its electrochemical properties were revealed in 1978 when Neff reported the successful deposition of a thin layer on platinum foil. After that, numerous publications have appeared exploring its electrocatalytic properties and its applications in biomedical science. During the last decade, a great number of studies involving PB have appeared, using different biosensor substrates and different oxidase enzymes. Together with the facile modification of the electrode substrate and the low cost of production, this has led to an on-going replacement of the more common enzymatic detection method involving horseradish peroxidase. Its high electrocatalytic activity and low operating overpotential have contributed to the diversification of its use in enzyme-based biosensors and immunosensors. Based on these results, it is clear that PB and its analogues will have important roles in the future development of biomedical devices for next generation health-care strategies.
ChemInform, 2000
ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance t... more ABSTRACT ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Coordination Chemistry Reviews, 1999
ABSTRACT
Journal of the Chemical Society, Dalton Transactions, 2001
The complexes [Hpy][Cu(H 3 L)(H 2 O)] 1 (L 6Ϫ = nitrilotrimethylenetrisphosphonate) and [Cu(HLЊ)(... more The complexes [Hpy][Cu(H 3 L)(H 2 O)] 1 (L 6Ϫ = nitrilotrimethylenetrisphosphonate) and [Cu(HLЊ)(py)] 2 ؒ2Me 2 CO 2 [(LЊ) 3Ϫ = P,PЈ,PЉ-triphenylnitrilotrismethylenetrisphosphinate)] have been isolated and characterized by X-ray crystallography, near IR-visible spectroscopy and magnetic measurements. The structure determination has shown the complexes to be constituted by monomeric and dimeric units respectively. In the monomer the metal atom is surrounded by the phosphonate ligand and a water molecule, with a geometry between a trigonal bipyramid and a square pyramid. The two copper atoms in the dimer are held together by an arm of the tripod ligand, with a pyridine molecule as additional ligand, and display octahedral geometry. The presence of monomeric and dimeric species in aqueous solutions of 1 and 2 has been shown by ESMS studies. The formation in water solution of the dimer [{Cu(H 3 L)} 2 ] 2Ϫ , as a minor species, has been supported by potentiometric measurements, whereas only the monomeric anion [CuLЊ] Ϫ has been ascertained to be present. In general the ligand H 3 LЊ forms less stable copper(II) complexes than H 6 L.
Acta Crystallographica Section C Crystal Structure Communications, 1995
ChemPhysChem, 2014
The cover picture shows enzyme-modified magnetic nanoparticles on the surface of a Prussian blue ... more The cover picture shows enzyme-modified magnetic nanoparticles on the surface of a Prussian blue (PB)-modified screen-printed electrode. The enzymatic response of the resulting biosensor was studied for the detection of glucose in blood samples, as described by P. Salazar et al. on p. 3742.
… de Ciencias:= Folia …, 2001
... Revista de la Academia Canaria de Ciencias: = Folia Canariensis Academiae Scientiarum, ISSN 1... more ... Revista de la Academia Canaria de Ciencias: = Folia Canariensis Academiae Scientiarum, ISSN 1130-4723, Vol. 13, Nº. 1-3, 2001 , págs. 105-113. Fundación Dialnet. Acceso de usuarios registrados. Acceso de usuarios registrados Usuario. Contraseña. Entrar. Mi Dialnet. ...
Inorganica Chimica Acta, 1999
Two new heptamolybdates, one containing calcium and imidazole and the other with urea and ammoniu... more Two new heptamolybdates, one containing calcium and imidazole and the other with urea and ammonium cations, have been prepared. X-ray crystallographic studies of single crystals of both compounds have been carried out. In the mixture of calcium and imidazole [(Himi) 4 ][Ca(H 2 O) 6 (m-O) 2 ][Mo 7 O 24 ]·2(imi)·3H 2 O (1), the calcium(II) cation is surrounded by six water molecules and two oxygen atoms from the polyanion, and bridges in trans position two [Mo 7 O 24 ] 6 − polyanions forming a linear composite with alternating Mo 7 O 24 and Ca(H 2 O) 6 units. The urea compound [CO(NH 2 ) 2 H] 3 (NH 4 ) 9 [Mo 7 O 24 ] 2 ·5[CO(NH 2 ) 2 ]·4H 2 O (2) presents [Mo 7 O 24 ] 6 − heptamolybdate anions bound by hydrogen bonds from NH 4 + , [CO(NH 2 )H] cations and H 2 O molecules. A new crystalline phase of a g-octamolybdate containing pyrazole coordinatively bound to molybdenum has also been prepared [(Hpyr) 4 ][(pyr) 2 (Mo 8 O 26 )]CH 3 COCH 3 ·2H 2 O (3). The structure has been solved by X-ray diffraction from a single crystal. The Mo N bond length is 2.262(3) A , . All compounds have been characterised by IR, 1 H NMR and thermal analysis.
Chemistry of Materials, 2002
2002 dielectric properties, magnetic properties dielectric properties, magnetic properties D 9000
Inorganica Chimica Acta, 2008
A new tubular metal-organic framework [Cu 2 (pcp) 2 (4,4 0 -bipy)] AE 5H 2 O (pcp = P,P 0 -diphen... more A new tubular metal-organic framework [Cu 2 (pcp) 2 (4,4 0 -bipy)] AE 5H 2 O (pcp = P,P 0 -diphenylmethylenediphosphinate) has been synthesized and characterized by single-crystal X-ray analysis, temperature-dependent X-ray powder diffraction (TDXD), thermogravimetric measurements and IR spectroscopy. The structure consists of polymeric nano-sized square channels, whose edges are constituted by infinite chains of metal ions bridged by phosphinate ligands. The chains are linked together by 4,4 0 -bipyridines, forming the walls of the channels. Solvent water molecules are located inside and outside the channels, all anchored through hydrogen bonds. The cross-section dimensions of the channels are approximately 10 · 10 Å 2 . The four guest molecules located inside the channels can be eliminated by gentle heating at ca. 80°C, restored in air, or in turn substituted by DMF through vapour exposition. The monohydrated phase [Cu 2 (pcp) 2 (4,4 0 -bipy)] AE H 2 O, which maintains the same polymeric framework as the title complex, remains stable till 260°C. Above this temperature the complex undergoes a solid state crystal-to-crystal rapid reaction, via loss of both the 4,4 0 -bipyridine and the remaining water and rearrangement of the coordinated pcp to give the previously reported [Cu(pcp)] polymeric framework.
Acta Crystallographica Section C Crystal Structure Communications, 1996
We have synthesized and characterized five new chlorochromate(VI) complexes of organic bases: 4,4... more We have synthesized and characterized five new chlorochromate(VI) complexes of organic bases: 4,4'-bipyridinium bis[chlorochromate(VI)], (C 10 H 10 N 2 )[CrO 3 Cl] 2 , 4-methylquinolinium chlorochromate(VI), (C 10 H 10 N)[CrO 3 Cl], 6-methylquinolinium chlorochromate(VI), (C ...
The synthesis of novel heterobimetallic derivatives of general formula [RuClCp(PPh(3))-μ-dmoPTA-1... more The synthesis of novel heterobimetallic derivatives of general formula [RuClCp(PPh(3))-μ-dmoPTA-1κP:2κ(2)N,N'-M(acac-κ(2)O,O')(2)] (M = Ni (3), Zn (4); dmoPTA = 3,7-dimethyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane) is described. The preparations of the ruthenium-cobalt analogue (M = Co (2)) and the starting compound [RuClCp(HdmoPTA-κP)(PPh(3))](CF(3)SO(3)) have been revised and their yield improved. Similar to 2, the solid state structures of 3 and 4 show that the dmoPTA-P and the dmoPTA-N(CH(3)) atoms are involved in the coordination to the {RuCpCl(PPh(3))} and {M(acac)(2)} moieties, respectively. The size of the diffusing units is almost the same for the three binuclear complexes, indicating that they exhibit similar solution structures. The diamagnetic ruthenium-zinc derivative was fully characterized in solution at 193 K by NMR as two diastereomeric pairs of enantiomers (R-Ru, Δ-Zn; R-Ru, Λ-Zn; S-Ru, Δ-Zn; S-Ru, Λ-Zn). Finally, the electrochemical properties of the complexes have been investigated by cyclic voltammetry.
Two new inorganic-organic polymeric hybrids [Sn(pcp)] and [Cu(pcp)], pcp=CH2(PhPO2)2(2-), have be... more Two new inorganic-organic polymeric hybrids [Sn(pcp)] and [Cu(pcp)], pcp=CH2(PhPO2)2(2-), have been synthesized and structurally characterized. The tin derivative has been obtained by reaction of the p,p'-diphenylmethylenediphosphinic acid (H2pcp) in water with SnCl2.2H2O, while the copper derivative has been synthesized through a hydrothermal reaction from the same H2pcp acid and Cu(O2CMe)2.H2O. The structures of these compounds have been solved "ab initio" by X-ray powder diffraction (XRPD) data. [Sn(pcp)] has a ladder-like polymeric structure, with tin(II) centers bridged by diphenylmethylenediphosphinate ligands, and alternating six- and eight-membered rings. The hemilectic coordination around the metal shows the tin(II) lone pair to be operative, resulting in significant interaction mainly with a C-C bond of one phenyl ring. The [Cu(pcp)] complex displays a polymeric columnar structure formed by two intersecting sinusoidal ribbons of copper(II) ions bridged by the bifunctional phosphinate ligands. The intersections of the ribbons are made of dimeric units of pentacoordinated copper ions. Crystal data for [Sn(pcp)]: monoclinic, space group P2(1)/c, a=11.2851(1), b=15.4495(6), c=8.6830(1) A, beta=107.546(1) degrees, V=1443.44(9) A, Z=4. Crystal data for [Cu(pcp)]: triclinic, space group P, a=10.7126(4), b=13.0719(4), c=4.9272(3) A, alpha=92.067(5), beta=95.902(7), gamma=87.847(4) degrees, V=685.47(7), Z=2. The tin compound has been characterized by 119Sn MAS NMR (magic-angle spinning NMR), revealing asymmetry in the valence electron cloud about tin. Low-temperature magnetic measurements of the copper compound have indicated the presence of weak antiferromagnetic interactions below 50 K.
] 3 , belongs to a transition metal hexacyanometallate family. Its electrochemical properties wer... more ] 3 , belongs to a transition metal hexacyanometallate family. Its electrochemical properties were revealed in 1978 when Neff reported the successful deposition of a thin layer on platinum foil. After that, numerous publications have appeared exploring its electrocatalytic properties and its applications in biomedical science. During the last decade, a great number of studies involving PB have appeared, using different biosensor substrates and different oxidase enzymes. Together with the facile modification of the electrode substrate and the low cost of production, this has led to an on-going replacement of the more common enzymatic detection method involving horseradish peroxidase. Its high electrocatalytic activity and low operating overpotential have contributed to the diversification of its use in enzyme-based biosensors and immunosensors. Based on these results, it is clear that PB and its analogues will have important roles in the future development of biomedical devices for next generation health-care strategies.