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Abstract

Tetrakis(acetonitrile)tetrachlorouranium(IV)R (UC1-4(CH-3CN)-4), M-r = 544.05, monoclinic, C2/c, a = 14.677 (4), b = 8.452 (2), c = 13.959 (3) ALPHA, beta = 91.77 (2) degrees, V = 1731 (2) ALPHA3, Z = 4, D-x = 2.087 Mg m-3, lambda(Mo Kalpha) = 0.71073 ALPHA, mu = 9.5054 mm-1, F(000) = 992, T = 295 (1) K, R = 0.052 for 1224 observed reflections. Molecular symmetry C-2. The U atom is eight-coordinated with dodecahedral geometry. The CL atoms occupy the dodecahedral B sites, U-CL 2.614 (2) and 2.624 (2) ALPHA, and the acetonitrile N atoms the A sites, U-N 2.567 (6) and 2.599 (6) ALPHA. A statistical comparison with an earlier structure determination (Cotton, Marler :20 Schwotzer (1984). Acta Cryst. C40, 1186-1188) has been carried out.

Additional information

Authors: VAN DEN BOSSCHE G, UNIVERSITE DE LIEGE AU SART TILMAN, LIEGE (BELGIUM);JRC - KARLSRUHE ESTAB. (GERMANY);SPIRLET M R, UNIVERSITE DE LIEGE AU SART TILMAN, LIEGE (BELGIUM);JRC - KARLSRUHE ESTAB. (GERMANY);GOFFART J, UNIVERSITE DE LIEGE AU SART TILMAN, LIEGE (BELGIUM);JRC - KARLSRUHE ESTAB. (GERMANY);REBIZANT J UNIVERSITE DE LIEGE AU SART TILMAN, LIEGE (BELGIUM), UNIVERSITE DE LIEGE AU SART TILMAN, LIEGE (BELGIUM);JRC - KARLSRUHE ESTAB. (GERMANY);JRC - KARLSRUHE ESTAB. (GERMANY), UNIVERSITE DE LIEGE AU SART TILMAN, LIEGE (BELGIUM);JRC - KARLSRUHE ESTAB. (GERMANY)
Bibliographic Reference: ACTA CRYST., VOL. C42 (1986) PP. 1478-1480
Record Number: 1989126057000 / Last updated on: 1989-03-01
Category: PUBLICATION
Available languages: en