Synthesis and crystal structure of [Re(CO)(3)(mu-CH3CO2)(THF)](4)

Citation
Fa. Cotton et al., Synthesis and crystal structure of [Re(CO)(3)(mu-CH3CO2)(THF)](4), INORG CHIM, 284(2), 1999, pp. 304-309
Citations number
36
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
INORGANICA CHIMICA ACTA
ISSN journal
00201693 → ACNP
Volume
284
Issue
2
Year of publication
1999
Pages
304 - 309
Database
ISI
SICI code
0020-1693(19990130)284:2<304:SACSO[>2.0.ZU;2-8
Abstract
A tetrameric complex [Re(CO)(3)(mu-CH3CO2)(THF)](4) (1) is formed in high y ield when the reaction product of Re(CO)(5)Cl with acetic acid in refluxing 1,2-dichlorobenzene is dissolved in THF. The use of Re-2(CO)(10) instead o f rhenium pentacarbonyl chloride also affords 1. The characterization of 1. 3THF.0.5C(6)H(14), has been accomplished by X-ray crystallography. The stru cture of the tetrameric molecule 1 consists of four rhenium(I) atoms bridge d by four acetate ligands. The coordination of each metal center is fulfill ed by three CO groups and one THE molecule in a way that all carbonyls are trans to oxygen atoms. The geometry of each acetate bridge is anti-syn prov iding a Re to Re separation of 5.40 Angstrom. This bonding mode is seen her e for the first time in rhenium carboxylates. Different coordination types for Re-RCO2 interaction are also discussed in the paper. (C) 1999 Elsevier Science S.A. All rights reserved.