Group 6 transition metal carbonyl complexes with chalcogen-bridged diarsenic(III) ligands

Autor:	Doerrer, Linda H., Green, Jennifer C., Green, Malcolm L. H., Haiduc, Ionel, Jardine, Christian N., Pascu, Sofia I., Silaghi-Dumitrescu, Luminita, Watkin, David J.
Zdroj:	Journal of the Chemical Society, Dalton Transactions; September 28, 2000, Vol. 2000 Issue: 19 p3347-3355, 9p
Abstrakt:	The neutral complexes [Cr(CO)4(Ph2AsOAsPh2)] 1, [Mo(CO)4(Ph2AsOAsPh2)2] 2, [Cr(CO)4(Ph2AsSAsPh2)] 3, [Mo(CO)4(Ph2AsSAsPh2)2] 4, [Cr(CO)5(Ph2AsOAsPh2)] 5 and [Cr(CO)5(Ph2AsSAsPh2)] 6 have been prepared. The crystal structures of compounds 1–5 were determined. The diarsenic ligand in 2, 4, and 5 is monodentate and in 1 and 3 the ligand is bidentate. The crystal structure of the ligand Ph2AsOAsPh2 was redetermined and the As–O–As angle found to be 115.98(17)°, significantly less than the value originally reported. Calculations, using density functional theory, assist discussion of the steric and electronic factors influencing the choice of binding mode.
Databáze:	Supplemental Index
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