(IUCr) Crystallography Journals Online

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Acta Cryst. (2006). E62, m3425-m3428 [ doi:10.1107/S1600536806047386 ]

A structure with trigonally and tetrahedrally coordinated Cu^I cations: rac-(acetonitrile)[2,2'-bis(1-propyl-1H-benzimidazol-2-yl)biphenyl]copper(I) bis(acetonitrile)[2,2'-bis(1-propyl-1H-benzimidazol-2-yl)biphenyl]copper(I) bis(perchlorate)

R. T. Stibrany and J. A. Potenza

Abstract: The asymmetric unit of the title salt, [Cu(C₃₂H₃₀N₄)(C₂H₃N)][Cu(C₃₂H₃₀N₄)(C₂H₃N)₂](ClO₄)₂, contains two perchlorate anions and two crystallographically distinct Cu^I complexes, viz. [Cu(L1b)(acetonitrile)]⁺ (A) and [Cu(L1b)(acetonitrile)₂]⁺ (B), where L1b is 2,2'-bis(1-propylbenzimidazol-2-yl)biphenyl. The A and B cations exhibit approximate trigonal-planar and tetrahedral coordination geometries, respectively. In the solid state, the ligand L1b is chiral but the crystal structure is a racemate. The cations form separate, enantiomerically pure columns along the a-axis direction. Centrosymmetrically related alternating R and S columns of A and of B cations, centered about the planes y = 0 and y = ${1 \\over 2}$ , respectively, progress along the c-axis direction. The perchlorate ions, which form columns along the a-axis direction, are linked to the cations by C-HO hydrogen bonds.

Online 24 November 2006

A structure with trigonally and tetrahedrally coordinated CuI cations: rac-(acetonitrile)[2,2'-bis(1-propyl-1H-benzimidazol-2-yl)biphenyl]copper(I) bis(acetonitrile)[2,2'-bis(1-propyl-1H-benzimidazol-2-yl)biphenyl]copper(I) bis(perchlorate)

R. T. Stibrany and J. A. Potenza

A structure with trigonally and tetrahedrally coordinated Cu^I cations: rac-(acetonitrile)[2,2'-bis(1-propyl-1H-benzimidazol-2-yl)biphenyl]copper(I) bis(acetonitrile)[2,2'-bis(1-propyl-1H-benzimidazol-2-yl)biphenyl]copper(I) bis(perchlorate)