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Pseudo-merohedrally...
Pseudo-merohedrally twinned tetrakis(1H-imidazole-κN3)bis(N-nitrocyanamidato-κN)copper(II)
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Diaz, Jesus Garcia (author)
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Kozisek, Jozef (author)
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Fronc, Marek (author)
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Gatial, Anton (author)
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Svoboda, Ingrid (author)
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- Langer, Vratislav, 1949 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2005
- 2005
- English.
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In: Acta Crystallographica Section C: Crystal Structure Communications. - 0108-2701 .- 1600-5759. ; C61:4, s. m180-m182
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https://research.cha...
Abstract
Subject headings
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- Crystals of the title complex, [Cu(CN3O2)2(C3H4N2)4], the structure of which has been determined by single-crystal X-ray diffraction at 304 K, appear to be pseudo-merohedrally twinned. Transformation to a monoclinic C-centred cell was necessary in order to derive the twin law. Twin refinement in a triclinic unit cell significantly reduced the R value. The asymmetric unit of the triclinic cell consists of one molecule in a general position and two half entities with the Cu atom on a centre of inversion. The coordination of the Cu atom is quasi-octahedral, with four imidazole N-atom donors in the equatorial plane and two cyano N atoms from the N-nitrocyanamidate anion in axial positions. Owing to symmetry in the centrosymmetric molecules, the trans imidazole ligands are parallel, while those in the non-centrosymmetric molecule make angles of 22.8(2) and 77.9(2)°.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- X-ray diffraction
- psedo-merohedral twin
Publication and Content Type
- art (subject category)
- ref (subject category)
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