A novel cyano-bridged heteronuclear complex exhibiting C�H���Ni close interaction: [Cd(C 4H 7N) 2Ni( (original) (raw)
Related papers
Tribology and Interface Engineering Series, 2011
The cyano-bridged heteronuclear polymeric complex, [Cd(pyr)2Ni(μ-CN)4]n, 1 (pyr=3-pyrroline or 2,5-dihydropyrrole), has been synthesized and characterized by FT-IR, Raman spectroscopy, thermal and elemental analyses. The crystal structure of 1 has been determined by X-ray single crystal diffraction. The complex crystallizes in orthorhombic system and space group Pmna. In 1, Ni(II) ion is coordinated by four cyano ligands, and the Cd(II) ion
Structural Chemistry, 2008
The cyano-bridged heteronuclear polymeric complex, [Cd(teta)Ni(l-CN) 2 (CN) 2 ] Á 2H 2 O (1), (teta = triethylenetetraamine) was synthesized and characterized by FT-IR spectroscopy, thermal analysis and single crystal X-ray diffraction techniques. It crystallizes in the orthorhombic system, space group Pccn. The asymmetric unit also contains two uncoordinated water molecules. The coordination geometry around the Cd(II) centre is a highly distorted octahedral. In the crystal structure, intramolecular N-HÁÁÁO and intermolecular N-HÁÁÁO, O-HÁÁÁO and O-HÁÁÁN hydrogen bonds, beside the cyano-bridged chains made up of tetracyanonickelate ions coordinated to Cd(II) ions, where the Ni(II) ion is coordinated by four cyanoligands in a square-planar arrangement, link the molecules into polymeric networks parallel to (001) plane, where the hydrogen bonded water molecules occupy the cavities between the layers. The FT-IR spectrum was reported in the 4,000-400 cm-1 region. Vibration assignments were given for all the observed bands and the spectral feature also supported the structure of the polymeric complex. The decomposition reaction takes place in the temperature range 20-1,000°C in the static air atmosphere.
C−H⋯Pd interactions and cyano-bridged heteronuclear polymeric complexes
Polyhedron
Three new heterometallic complexes, [Cu(N-Meim)4Pd(μ-CN)2(CN)2]n (1), [Zn(N-Meim)3Pd(μ-CN)2(CN)2]n (2) and [Cd(N-Meim)2Pd(μ-CN)4]n (3), have been isolated from the reactions of M[Pd(CN)4] (M = Cu(II), Zn(II) or Cd(II)) and N-Meim (N-methylimidazole) with in different molar ratios. All complexes have been characterized by X-ray analyses, vibrational (FT-IR and Raman) spectra, thermal and elemental analyses. The crystallographic analysis reveals that the crystal structures of 1 and 2 are 1D coordination polymer, while 3 presents a 2D network. In the Cu(II) and Zn(II) complexes, two cyanide groups of [Pd(CN)4]2− coordinated to the adjacent M(II) ions and distorted octahedral and square pyramidal geometries of complexes are completed by four and three nitrogen atoms of N-Meim ligands, respectively. The Cd(II) ion is six-coordinate, completed with the two nitrogen atoms of N-Meim ligands in the axial positions and the four nitrogen atoms from bridging cyano groups in the equatorial plane. The most striking features of complexes 1–3 are the presence of obvious C–H⋯Pd hydrogen-bonding interactions between the Pd(II) and hydrogen atoms of N-Meim ligand. This weak hydrogen bonding plays a crucial role in the architecture of the network polymers. The adjacent chains are held together by C–H⋯Pd, C–H⋯π or π⋯π interactions, forming three-dimensional network.Three new heterometallic complexes, [Cu(N-Meim)4Pd(μ-CN)2(CN)2]n (1), [Zn(N-Meim)3Pd(μ-CN)2(CN)2]n (2) and [Cd(N-Meim)2Pd(μ-CN)4]n (3), have been isolated from the reactions of M[Pd(CN)4] (M = Cu(II), Zn(II) or Cd(II)) and N-Meim (N-methylimidazole) with in different molar ratios. The most striking features of complexes are the presence of obvious C−H···Pd hydrogen-bonding interactions between the Pd(II) and hydrogen atoms of N-Meim ligand. This weak hydrogen bonding plays a crucial role in the architecture of the network polymers. The adjacent chains are held together by C–H⋯Pd, C–H⋯π or π⋯π interactions, forming three-dimensional network.
Journal of Inorganic and Organometallic Polymers and Materials
Three new complexes [M(deten)2Ni(μ-CN)2(CN)2]n (M = Ni, Cu and Cd, deten = N,N-diethylethylenediamine) have been synthesized and characterized by chemical, thermal analysis, FT-IR and Raman spectroscopies. The crystal structure of the Cd complex has been determined by X-ray single crystal diffraction. Structural study reveals that the Ni2+ and Cd2+ ions are located on inversion centers, and adopt slightly distorted square-planar and octahedral geometries, respectively. In the crystal structure, the intermolecular N–H⋯N hydrogen bonds link the polymeric chains into a two dimensional network. Vibrational spectral data indicate the presence of two ν(C≡N) for complexes can be assigned to the terminal and bridging cyanides. The decomposition reaction take places in the temperature range 30–1000 °C in the static air atmosphere.
Two dimensional cyano-bridged heteropolynuclear complex containing Pd ···π interactions
Zeitschrift für Kristallographie - Crystalline Materials, 2013
The heteronuclear complex, [Cd(NH 3) 2 (m-ampy)Pd(m-CN) 2 (CN) 2 ] n (1) (ampy ¼ 4-aminomethylpyridine), was synthesized and characterized by vibrational (FT-IR and Raman) spectroscopy, elemental and thermal analyses and single crystal X-ray diffraction techniques. The complex crystallizes in the triclinic system, space group P 1 1. The Cd(II) ion exhibits a distorted octahedral coordination by two different N-atoms from two symmetrically equivalent ampy ligands, two ammine ligands and two bridging cyano groups, whereas the Pd(II) ion has square planar coordination and is coordinated by four cyano ligands. The tetracyanopalladate(II) anion is coordinated to the adjacent two Cd(II) ions to generate a one-dimensional chain. The adjacent 1D chains are connected by the m-ampy bridging ligands to form a 2D network. The 2D layers are further linked by Pd Á Á Á p and hydrogen bonding interactions to generate a 3D supramolecular network. The decomposition reaction takes places in the temperature range of 40-900 C in the static air atmosphere.
Journal of Molecular Structure, 2009
Nickel(II)Á Á Áp interaction in [M(ampy) 2 Ni(l-CN) 2 (CN) 2 ] n (M = Zn(II) and Cd(II), ampy = 2-aminomethylpyridine): Syntheses, vibrational spectroscopy, thermal analyses and crystal structures of cyano-bridged heteronuclear polymeric complexes Günes ß Süheyla Kürkçüoglu a, * , Okan Zafer Yes ßilel b , _
GunesKurkcuogli Journal of Molecular Structure 2014
Three new cyano-bridged heteronuclear polymeric complexes were synthesized. The complexes are analyzed by FT-IR and Raman spectra. The structures of 2 and 3 were determined by X-ray single crystal diffraction method. The structures of the complexes consist of a 1D zigzag chain. The adjacent 1D layers were extended to a 3D hydrogen-bonded network.
Inorganic Chemistry Communications, 2001
A new cyanato-bridged polymeric complex Cd 3 NCO 6 NH 2 CH 2 C 5 H 4 N 3 n has been synthesized and characterized by X-ray crystallography. There are three cadmium atoms, three chelated 2-(aminomethyl)pyridine and six end-on bridging cyanato groups in the asymmetric unit. Each Cd atom is bonded to one chelated C 5 H 4 NCH 2 NH 2 base and four l 2 -NCO groups in a distorted octahedral environment. Three such independent CdN 6 octahedra share their bridging edges to produce a zig±zag ladder shaped polymeric network extending along a. Ó
Journal of Inorganic and Organometallic Polymers and Materials, 2009
Three cyano bridged hetero-metallic complexes of general formula, trans-[M(N-Meim) 2 Ni(l-CN) 4 ] n (N-Meim= N-methylimidazole and M=Cu(II), Zn(II) or Cd(II)) have been synthesized and characterized by vibrational (FT-IR and Raman) spectroscopy, single crystal X-ray diffraction, thermal analyses and elemental analyses. The crystallographic analyses reveal that the complexes, [Cu(N-Meim) 2 Ni(l-CN) 4 ] n (1), [Zn(N-Meim) 2-Ni(l-CN) 4 ] n (2) and [Cd(N-Meim) 2 Ni(l-CN) 4 ] n (3), have polymeric 2D networks. In the complexes, four cyanide groups of [Ni(CN) 4 ] 2coordinated to the adjacent M(II) ions and distorted octahedral geometries of complexes are completed by two nitrogen atoms of trans N-Meim ligands. Vibration assignments are given for all the observed bands and the spectral features also supported to the crystal structures of polynuclear complexes.