OXIDATION OF MOLYBDENUM(0) AND TUNGSTEN(0) CARBONYL-COMPLEXES WITH SILVER TRIFLATE

Authors
ABBOTT AP MALKOV AV ZIMMERMANN N RAYNOR JB AHMED G STEELE J KOCOVSKY P
Citation
Ap. Abbott et al., OXIDATION OF MOLYBDENUM(0) AND TUNGSTEN(0) CARBONYL-COMPLEXES WITH SILVER TRIFLATE, Organometallics, 16(16), 1997, pp. 3690-3695
Citations number
46
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
16
Issue
16
Year of publication
1997
Pages
3690 - 3695
Database
ISI
SICI code
0276-7333(1997)16:16<3690:OOMATC>2.0.ZU;2-P
Abstract
Benzyltriethylammonium chloropentacarbonylmolybdate (1) and chloropent acarbonyltungstate (2) complexes react with CF3SO3Ag in DME via a comb ination of chloride exchange and a redox process, as revealed by cycli c voltammetry and ESR spectrometry. The resulting intermediate M(I) sp ecies disproportionate to M(0) and M(II) so that 3 equiv of TfOAg are required for the quantitative conversion into the M(II) complex. Analo gous PPN complexes 3 and 4 only undergo the redox process (in DME); in this instance, the chloride exchange is precluded, presumably due to strong pairing of the complex anion with the counterion.