Acta Crystallographica Section C

Crystal Structure Communications

Volume 57, Part 10 (October 2001)

Acta Cryst. (2001). C57, 1135-1137    [doi:10.1107/S0108270101009349]

Tricarbonyl[1,1',1''-ethylidynetris(pyrazole-N²)]rhenium(I) bromide and tricarbonyl[methylidynetris(pyrazole-N²)]rhenium(I) iodide ethanol hemisolvate

D. H. Gibson, M. S. Mashuta and H.-Y. He

Abstract: The two title compounds, [Re(C₁₀H₁₀N₆)(CO)₃]Br and [Re(C₁₁H₁₂N₆)(CO)₃]I·0.5C₂H₆O, have slightly distorted octahedral geometries about the rhenium centers. The distortions result from the constraints of the ³-coordinated tris(pyrazol-1-yl)methane ligands in each case which reduce the N-Re-N bond angles well below the preferred value of 90° for facially disposed ligands at a six-coordinate metal center.

Formula: [Re(C₁₀H₁₀N₆)(CO)₃]Br and [Re(C₁₁H₁₂N₆)(CO)₃]I·0.5C₂H₆O

Online 12 October 2001

	Structure factor file (CIF format) (192.7 kbytes) Contains datablock I
	Structure factor file (CIF format) (240.8 kbytes) Contains datablock II

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