Syntheses and reactivity of molybdenum complexes containing the diphenylphosphinodithioformato ligand
Resource
Journal of Organometallic Chemistry 577 (1): 134-139
Journal
Journal of Organometallic Chemistry
Journal Volume
577
Journal Issue
1
Pages
134-139
Date Issued
1999
Author(s)
Yih, K.-H.
Abstract
Treatment of [Et4N][Mo(CO)5(PPh2)] (1) with CS2 afforded [Et4N][Mo(CO)5(PPh2CS2)] (3) which was also synthesized from the reaction of Mo(CO)5(CH3CN) with [Et4N][PPh2CS2] (2). In complex 3, the diphenylphosphinodithioformato ligand, PPh2CS2-, coordinated to the molybdenum through the phosphorus atom. The reactions of 3 with various alkyl halides yielded the neutral complexes Mo(CO)5[PPh2(CS2R)] (R = C2H5, C2H4OH, C3H5, 4-6). Acylation of 3 with 1-naphthoyl chloride [C10H7C(O)Cl] gave the complex Mo(CO)5[PPh2(CS2COC10H7)] (7) with moderate yield. Alkylation and acylation reactions occurred at the sulfur atom. Complex 3 reacted with CH2I2 to give the dinuclear complex [Mo(CO)5(PPh2CS2)]2(μ-CH 2) (8) in which the two metal atoms are bridged by the bidentate phosphorus ligand. Decarbonylation of 3 in CH3CN produced an anionic product which was identified as [Et4N][Mo(CO)4(PPh2CS2)] (9). The PPh2CS2- ligand of 9 bound to the metal center through both the phosphorus and one of the sulfur atoms. All of the complexes are identified by spectroscopic methods. © 1999 Elsevier Science S.A. All rights reserved.
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