Isolation, crystal and molecular structures of two geometric isomers of a 3N, 2S pentacoordinate copper(II) complex

Glass, Richard S.; Sabahi, M.; Hojjatie, Massoud; Wilson, George S.

doi:10.1021/ic00261a004

Cited by 13 publications

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“…Compound 2 crystallised in the monoclinic space group C2/c. By calculating the t value of 5 coordinate structures (square based pyramidal t = 0, trigonal pyramidal t = 1) the degree of distortion, if any, can be quantified, 42 there is almost no distortion from ideal trigonal bipyramidal geometry.…”

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Synthesis and characterisation of novel aluminium and gallium precursors for chemical vapour deposition

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Synthesis and characterisation of novel aluminium and gallium precursors for chemical vapour deposition

et al. 2015

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“…Two closely related chelating imidazole−thioether ligands (bidhx, bhdhx) with an N 2 S 2 donor set have been found to impose two different Cu(II) coordination geometries, and in fact, the Cu−bidhx system forms both pseudooctahedral and trigonal bipyramidal chlorides. Further, two structural isomers have been encountered for the pentacoordinate copper(II) complex of a bidentate imidazole−thioether ligand, each with the same counteranion.…”

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“…a B-values for anisotropically refined atoms are given in the form of the isotropic equivalent thermal parameter defined as4 /3[a 2 B(1, 1) + b 2 B(2,2)…”

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Dipicolylamine Complexes of Copper(II): Two Different Coordination Geometries in the Same Unit Cell of Cu(Dipica)₂(BF₄)₂

1996

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Bright blue Cu(Dipica)(2)(BF(4))(2) crystallizes in the monoclinic space group P2(1)/n, with unit cell parameters a = 23.406(6) Å, b = 9.338(2) Å, c = 25.573(7) Å, beta = 95.39(2) degrees, and Z = 8. The structure was solved by conventional Patterson and Fourier methods. The R and R(w) values for 5282 observed reflections were 7.06% and 9.10% respectively. Two structurally different complex cations are present in the same unit cell, one hexacoordinate and the other pentacoordinate. In the hexacoordinate cation, the two tridentate bis(2'-picolyl)amine ligands are trans-facially coordinated with two pyridine nitrogens and the two secondary amine nitrogens situated on four positions in a plane [Cu-N(pyr) = 2.189(6), 2.146(6) Å; Cu-N(sat) = 2.207(6), 2.201(5) Å]. The remaining two pyridine nitrogens constitute the axis [Cu-N(pyr) = 2.035(5), 2.038(5) Å] in an equatorially expanded pseudooctahedral geometry. The pentacoordinate cation possesses a square-pyramidal configuration, the two secondary nitrogens being mutually cis, with one Dipica equatorially tridentate [Cu-N(pyr) = 2.044(5), 2.027(5) Å, Cu-N(sat) = 1.995(5) Å]. The other Dipica functions as a bidentate ligand, with one of the pyridine nitrogens occupying the equator [Cu-N(pyr) = 1.986(5) Å] and the aliphatic nitrogen defining the axial copper position [Cu-N(sat) = 2.344(5) Å]. Its second pyridine is uncoordinated but hydrogen-bonded to the coordinated NH of the other ligand. Solution properties offer no clear distinction between the two cation stereochemistries. The ternary chelates [Cu(Dipica)(Acac)]ClO(4) and [Cu(Dipica)(Bipy)](ClO(4))(2) are also described.

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ChemInform Abstract: Isolation and Crystal and Molecular Structures of Two Geometric Isomers of a 3N,2S‐Pentacoordinate Copper(II) Complex.

et al. 1987

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Isolation, crystal and molecular structures of two geometric isomers of a 3N, 2S pentacoordinate copper(II) complex

Cited by 13 publications

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Synthesis and characterisation of novel aluminium and gallium precursors for chemical vapour deposition

Synthesis and characterisation of novel aluminium and gallium precursors for chemical vapour deposition

Dipicolylamine Complexes of Copper(II): Two Different Coordination Geometries in the Same Unit Cell of Cu(Dipica)₂(BF₄)₂

ChemInform Abstract: Isolation and Crystal and Molecular Structures of Two Geometric Isomers of a 3N,2S‐Pentacoordinate Copper(II) Complex.

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Isolation, crystal and molecular structures of two geometric isomers of a 3N, 2S pentacoordinate copper(II) complex

Cited by 13 publications

References 0 publications

Synthesis and characterisation of novel aluminium and gallium precursors for chemical vapour deposition

Synthesis and characterisation of novel aluminium and gallium precursors for chemical vapour deposition

Dipicolylamine Complexes of Copper(II): Two Different Coordination Geometries in the Same Unit Cell of Cu(Dipica)2(BF4)2

ChemInform Abstract: Isolation and Crystal and Molecular Structures of Two Geometric Isomers of a 3N,2S‐Pentacoordinate Copper(II) Complex.

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Dipicolylamine Complexes of Copper(II): Two Different Coordination Geometries in the Same Unit Cell of Cu(Dipica)₂(BF₄)₂