Synthesis and spectroscopic and structural investigation on tetrakis(N-(2-ammoniaethyl)piperazinium)di-.mu.-chloro-dodecachlorotricuprate(IIbis(tetrachlorocuprate(II)), (C6H18N3)4Cu5Cl22 (original) (raw)
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Journal of Chemical Sciences, 2016
The synthesis and physico-chemical characterization of a novel organic-inorganic hybrid material, 1-(2,5-dimethylphenyl)piperazine-1,4-dium tetrachloridocuprate(II), have been reported. This compound crystallizes in the monoclinic system with the space group of P 2 1 /n and cell parameters a = 9.833(3), b = 16.337(2), c = 10.452(3) Å, β = 102.13(4) • , Z = 4 and V = 1641.5(7) Å 3. In the title salt, (C 12 H 20 N 2)[CuCl 4 ], the geometry of the CuCl 2− 4 ion is intermediate between tetrahedral and square planar. In the atomic arrangement tetrachlorocuprate anions and the piperazine-1,4-dium cations are held together via N-H.. .Cl and C-H.. .Cl to give a 1-D hybrid chain running along the a-axis. The six-membered piperazinedium ring adopts a chair conformation. The vibrational absorption bands were identified by infrared spectroscopy. Magnetic measurements reveal that moderate antiferromagnetic (AF) Cu-Cu interactions dominate in the title compound.
American Journal of Analytical Chemistry, 2015
The chemical preparation, crystal structure and spectroscopic characterization of a novel organicinorganic hybrid material, bis(4-dimethylaminopyridinium) tetrachlorocuprate, have been reported. This compound crystallizes in the monoclinic system in space group C2/c and cell parameters a = 12.4356 (18), b = 12.0901 (17), c = 14.094 (2) Å, β = 115.303 (2)˚, Z = 4 and V = 1915.8 (5) Å 3. In the title salt, (C 7 H 11 N 2) 2 CuCl 4 , both 4-dimethylaminopyridinium cations are protonated at their pyridine N atoms. The geometry of the 2 4 − CuCl ions is intermediate between tetrahedral and square planar. The atomic arrangement can be described by an alternation of inorganic layers built up by tetrachlorocuprate anions and organic layers formed by 4-dimethylaminopyridinium cations. The organic layers are located in sandwich between the inorganic layers. The anionic and cationic layers are held together by N-H•••Cl and C-H•••Cl hydrogen bonds into a three-dimensional network. The individual cations are π-π stacked with their neighbors at a distance of 3.7622 (5) Å. The vibrational absorption bands were identified by infrared spectroscopy and DFT calculations allowed their attribution.
Inorganic Chemistry, 1980
Some compounds of the type (4BZpipdH)2CU2XrnY6-,,, (X = C1; Y = Br; m = 6, 4, 2, 0; 4BzpipdH = 4-benzylpiperidinium cation) and ( 4 B~p i p d H )~C u B r~ complexes were prepared and characterized by means of X-ray powder, electronic, and infrared spectra and magnetic moments. For one of them, ( 4 B~p i p d H )~C u~C l~, the crystal structure was also determined.
4-(2,3-Dichlorophenyl)piperazin-1-ium picrate
IUCrData, 2021
Centre for Research and Development, PRIST Deemed to be University, Thanjavur, 613 403, Tamil Nadu, India, Department of Chemistry, Periyar Maniammai Institute of Science and Technology, Thanjavur 613 403, Tamil Nadu, India, X-ray Crystallography Unit, School of Physics, University Sains Malaysia, 11800, USM, Penang, Malaysia, and Xray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800, USM, Penang, Malaysia. *Correspondence e-mail: nirmalramjs@gmail.com
548.737+546.59 -Chlorinated tetraaza metallocomplex of gold(III) N,N -bis(2-aminoethyl)-3-chloro-2,4-pentanediiminatogold(III) bisperchlorate [Au(C 9 H 18 N 4 Cl)](ClO 4 ) 2 has been synthesized for the first time. The complex was investigated by X-ray phase and diffraction analyses and by electron and IR spectroscopy. Monoclinic crystals, a = 10.1290(5) Å, b = 7.2163(3) Å, c = 12.8010(7) Å; = 111.865(1) , V = 868.37(7) Å 3 , Z = 2, (calc) = 2.347 g/cm 3 , space group P2 1 . The structure consists of virtually planar acentric cations [Au(C 9 H 18 N 4 Cl)] 2+ and perchlorate anions [ClO 4 ] -. The gold atom coordinates four nitrogen atoms, forming a square plane. When chlorine atoms are introduced in the -position of the six-membered ring of the tetraaza metallocomplex, the lengths of the N and delocalized bonds do not change.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 2015
A new organic-inorganic hybrid material, 1,4-bis(3-ammoniumpropyl) piperazinium pentachloridocuprate(II) chloride tetrahydrate [(C₁₀H₂₈N₄)CuCl₅Cl⋅4H₂O], has been synthesized and characterized by X-ray diffraction, UV-visible absorption, Infrared and Raman spectroscopy. The compound crystallizes in the orthorhombic system and Pnma space group with a=8.18 (3)Å, b=10.96 (5)Å, c=21.26 (9)Å, V=2254.3 (15)Å(3). In this structure, the Cu(2+) ion, surrounded by five chlorides, adopts the square pyramidal coordination geometry. The structure of this compound consists of tetraprotonated 1,4-bis(3-ammoniumpropyl) piperazinium cations and the anionic sublattice is built up of isolated, square pyramid [CuCl₅](3)(-) units, chloride ion Cl(-) and water molecules connected with each other by hydrogen bonds. Organic and inorganic entities are interconnected by means of hydrogen bonding contacts [NH⋯O(Cl), O(W)H⋯Cl and O(W)H⋯O]. Furthermore, the room temperature IR and Raman spectra of the title comp...
Materials Research Bulletin, 1992
The compound bis(4-methylpyridinium) tetrachlorocuprate(II), (C6H7NH)2[CuCI4], has been prepared by reaction of 4-methylpyridinium hydrochloride and CuC12.2H20 in acetone solution. The thermal behaviour has been investigated by thermoanalytical methods (TG, DTG and DTA) under argon-oxygen and argon atmospheres. In both atmospheres, the compound melts at 125 °C, but the liquid decomposition as well as the final products are strongly influenced by the surrounding atmosphere. Whereas in presence of oxygen, the thermal decomposition led to CuO above 550 °C, in inert atmosphere a final mixture of CuCI and Cu was obtained. Single crystal X-ray diffraction analysis shows that the title compound crystallizes in the monoclinic system, space group Cc with Z = 4, a=7.192 , b = 20.589(4), c=11.928(1) /~, 13=107.27(1) °, V = 1686.6(3) A3, F(000) = 796, t~ = 19.262 cm -1, M = 393.63, Dx = 1.55, Do = 1.53(1) Mg.m -3, and Z.(MoKet) = 0.71069 A. Final refinement led to R = 0.032 and wR = 0.040 for 1690 observed reflections with I > 3~(I). The unit cell is made up of tetrachlorocuprate(II) anions and 4-methylpyridinium cations linked together by an extensive hydrogen bond network of types N-H...C1 and C-H...C1, and cation-cation 7~-~ interactions. The geometry of the [CuC14] 2-anion is intermediate between tetrahedral and square plane, with trans angles of 134.78(5) and 142.05 ° . This work aims to reveal the influence of the cation nature on the stereochemistry and the thermal properties of the copper(II) halides due to the important thermal and magnetic properties that these compounds exhibit.
Croatica Chemica Acta, 1999
The solid state structure of [C 12 H 9 ClHgN 2 O 3 S] 2 was determined and the appropriate assignment of the CO and SO 2 stretching vibrations in the FT IR spectrum was made. Two monomeric chlorosaccharinatopyridinemercury(II) moieties are joined together forming a dim -chloro bridged dimmer by an inversion centre operation. The mercury atom is coordinated with two bridging chlorine and the pyridine and saccharinato nitrogen atoms in the shape of a heavily distorted tetrahedron. There is a significant difference between Hg1-Cl1 [2.533(2) Å] and Hg1-Cl1 i [2.715(2) Å] distances as well as between Hg1-N11 [2.106(7) Å] and Hg1-N21 [2.209(7) Å] bond lengths. The valence bond angles at the metal atom deviate significantly from the standard tetrahedral value, ranging from 86.23(7)°for Cl1-Hg1-Cl1 i to 131.5(3)°for N11-Hg1-N21. Discrete molecules are linked together by weak intermolecular C-HLO attractions at distances less than 3.5 Å.