SPECTROSCOPIC EVIDENCE FOR A BIS(SULFIDO-BRIDGED) DIMERIC FE4S4 CLUSTER - A STEP TOWARD A SYNTHETIC ANALOG OF THE P-CLUSTER OF NITROGENASE

Authors
BARCLAY JE EVANS DJ LONGHURST S
Citation
Je. Barclay et al., SPECTROSCOPIC EVIDENCE FOR A BIS(SULFIDO-BRIDGED) DIMERIC FE4S4 CLUSTER - A STEP TOWARD A SYNTHETIC ANALOG OF THE P-CLUSTER OF NITROGENASE, Anales de quimica, 92(6), 1996, pp. 381-384
Citations number
22
Categorie Soggetti
Chemistry
Journal title
Anales de quimica → ACNP
ISSN journal
11302283
Volume
92
Issue
6
Year of publication
1996
Pages
381 - 384
Database
ISI
SICI code
1130-2283(1996)92:6<381:SEFABD>2.0.ZU;2-#
Abstract
Bis(sulfido-bridged) Fe4S4 dimer, [PPh(4)](2)[{Fe4S4(SPh)(2)}(2)(mu-S) (2)], can be prepared and isolated from the reaction of the 2:2 site-d ifferentiated iron-sulfur cluster, [PPh(4)](2)[Fe4S4 (OPh)(2) (SPh)(2) ], with hexamethyldisilathiane. H-1-NMR, UV/visible, infrared and Moss bauer spectroscopies and conductivity measurements unambiguously chara cterise the dimeric product and show it to be both homogeneous and pur e. The bridged-cluster has features similar to those of the Fe8S8 P-cl uster of molybdenum nitrogenase.