ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Crystal structure of tetracyanotriammine complex of mono and divalent copper having the formula [Cu₂(CN)₂CU-(CN)₂(NH₃)₃]

M. Dunaj-Jurčo and M. A. Porai-Koshits

Lehrstuhl für anorganische Chemie an der Slowakischen Technischen Hochschule, Bratislava

Abstract: The x-ray structural analysis of the complex of stoichiometric compn. Cu₃(CN)₄.3NH₃ with the ratio [Cu]:[CN]:[NH₃] of 3.000:3.975:3.006 is described. The crystals are orthorhombic, space group Abm2, with a 12.674 ± 0.005, b 12.242 ± 0.005, c 14.577 ± 0.006 A.; Z = 8. The final R factor is 17.9%. Cu(I) is coordinated in a deformed tetrahedron, with CN groups occupying 3 peaks of the tetrahedron and with 1 more Cu(I) occupying the fourth peak. Cu(II) has a coordination no. of 6. It is coordinated in a deformed tetragonal bipyramid, the peaks of which are occupied by 4 NH₃ mols. and 2 CN groups in the cis position. Cu(I) and Cu(II) are interbound with the CN groups, which behave as bifunction ligands. The structure is composed of layers which are mutually turned 180° and are deposited on each other in the direction of the c axis.

Full paper in Portable Document Format: 214a241.pdf (in Slovak)

Chemical Papers 21 (4) 241–249 (1967)