A second monoclinic polymorph of di-μ-chlorido-bis(chlorido{2-[(4-ethylphenyl)iminomethyl]pyridine-κ2N,N′}copper(II)) (original) (raw)
2012, Acta Crystallographica Section E Structure Reports Online
A second monoclinic polymorph of di-lchlorido-bis(chlorido{2-[(4-ethylphenyl)iminomethyl]pyridine-j 2 N,N 0 0 0 }copper(II)
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Acta Crystallographica Section E Structure Reports Online, 2010
The structure of the dinuclear title complex, [Cu(2)(C(5)H(9)O(2))(4)(C(5)H(5)N)(2)], represents a monoclinic polymorph of the previously reported triclinic form [Blewett et al. (2006 ▶). Acta Cryst. E62, m420-m422]. Each carboxyl-ate group is bidentate bridging and the distorted octa-hedral geometry about each Cu(II) atom is completed by a pyridine N atom and the other Cu atom [Cu⋯Cu = 2.6139 (7) Å]. In the crystal, mol-ecules are connected into supra-molecular chains via π-π inter-actions formed by the pyridine rings [centroid-centroid distance = 3.552 (3) Å] and these are connected into a two-dimensional array in the ac plane by C-H⋯π contacts. One of the tert-butyl groups is disordered over two orientations in a 0.734 (6):0.266 (6) ratio.
Journal of Chemical Crystallography, 2010
Reactions of N,N 0 -diethylthiourea (Detu) with copper(I) cyanide and copper(I) iodide in a 2:1 M ratio in acetonitrile resulted in the formation of [Cu(Detu)Cl] 3 Á (CH 3 CN) 0.5 (1) and [Cu(Detu) 3 I] (2), respectively. In compound 1 each copper atom is coordinated with one sulfur atom of Detu and with one chloride ion forming a centrosymmetric trinuclear core (Cu 3 S 3 Cl 3 ) that exhibits a Cu-Cu separation of 2.7383(5) Ǻ indicating the existence of cuprophilic interactions. Complex 2 crystallizes with two independent molecules per asymmetric unit. Each copper atom is coordinated with three sulfur atoms of Detu and with one iodide ion in a tetrahedral arrangement.
Crystal Engineering, 2001
Two new copper complexes with triethanolamine (H 3 L) have been prepared using copper powder and characterized by X-ray crystallography, IR and EPR spectroscopy. These are [Cu I (H 3 L)Cl] x •[Cu II (H 2 L)Cl] 1Ϫx (X=0; 2/3) (1) and [Cu II (H 2 L)SCN] (2). Both complexes are neutral species and contain copper atoms in trigonal bipyramidal environments. The important dimensions in 1 are Cu-N 2.011(5), 3Cu-O 2.073(3), Cu-Cl 2.239(2) Å and N-Cu-Cl=180.0°; in 2 Cu-N NCS 1.918(3), Cu-N H2Tea 1.983(3), Cu-O 2.004(2), 2Cu-O 2.13(1) Å and N H2Tea -Cu-N NCS =174.6(1)°. 2 has all the copper atoms in the oxidation state II, while the three-fold symmetry in 1 would suggest that the metal atoms are formally in the oxidation state I. Results of magnetic measurements of several samples of 1 are rationalized by assuming that a continuous range of composition for [Cu I (H 3 L)Cl] x •[Cu II (H 2 L)Cl] 1Ϫx can occur. In the case of x=0, : S 1 4 6 3 -0 1 8 4 ( 01 )0 0 0 1 0 -7 202 L.A. Kovbasyuk et al. / Crystal Engineering 4 (2001) 201-213 1 becomes a polymorph of the reported compound [Cu II (H 2 L)Cl].
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