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Synthesis and transition metal chemistry of ferrocenylbis(benzo-oxazaphosphininone)

Authors
  • PRASAD, PS
  • BALAKRISHNA, MS
Publication Date
Dec 03, 2018
Source
DSpace at IIT Bombay
Keywords
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Unknown
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Abstract

The new ferrocenylbis(oxazaphosphininone), [Fe{C5H4P(OC6H4)(CO) N-(C2H4Cl)}(2)] (1) was synthesized by the reaction of bis(dichlorophosphino) ferrocene with two equivalents of 2(2'-hydroxy) phenyloxazoline in the presence of triethylamine in 83% yield. The reactions of 1 with aq. H2O2 or elemental sulfur afforded bis-chalcogenides [Fe{C5H4P(E)(OC6H4)(CO) N(C2H4Cl)}(2)] (2 E = O, 3 E = S). Treatment of 1 with [M(CO)(4)(C5H11N)(2)] (M = Mo, W), [RuCp(PPh3)(2)Cl] and [M(COD)Cl-2] (M = Pd, Pt) afforded the chelate complexes [Fe{C5H4P(OC6H4)(CO) N(C2H4Cl)}(2){M(CO)(4)}] (4M = Mo, 5M = W), [Fe{C5H4P(OC6H4)(CO) N(C2H4Cl)}(2){RuCp(Cl)}] (7) and [Fe{C5H4P(OC6H4) (CO) N(C2H4Cl)}(2){MCl2}] (8M = Pd, 9M = Pt), whereas the reaction of 1 with [Ru(eta(6)-p-cymene) Cl-2](2), yielded a bimetallic complex [Fe{C5H4P(OC6H4)(CO) N(C2H4Cl)}(2){RuCl2(eta(6)-p-cymene)}(2)] (6). The reaction between 1 and CuX in equimolar ratio also yielded binuclear complexes, [Fe{C5H4P(OC6H4)(CO) N(C2H4Cl)}(2){CuX}(2)] (10 X = Cl, 11 X = Br, 12 X = I). All the compounds are characterized by spectroscopic methods and the structures of complexes 3, 7, 9 and 10 were confirmed by single crystal X-ray diffraction studies. The electrochemistry of 1, 3, 8, 9 and 12 is also reported. (C) 2018 Elsevier B.V. All rights reserved.

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