220061-13-2

Upstream product

• 26042-64-8 silver hexafluoroantimonate 
• 220061-05-2 Re(CO)3(C₅H₃N(P(S)(C₆H₅)2)2)⁽¹⁺⁾*Re₂(CO)6Br₃^(1-)=[Re(CO)3(C₅H₃N(P(S)(C₆H₅)2)2)][Re₂(CO)6Br₃] 

Relevant academic research and scientific papers

2,6-Bis(diphenylphosphinosulfide)pyridine (L) as a facial terdentate ligand: Synthesis and characterisation of the tricarbonylrhenium(I) complexes fac-[Re(CO)3L]+ [Re2(CO)6(μ-X)3]- (X=Cl, Br or I) and fac-[Re(CO)3L]+ [SbF6]-

The halogenopentacarbonylrhenium(I) compounds react with 2,6-bis(diphenylphosphinosulfide) pyridine (L) under mild conditions to yield ionic complexes of general formulae, fac-[Re(CO)3L]+ [Re2(CO)6 (μ-X)3]- (X=Cl, Br or I), in which the ligand adopts a facial terdentate bonding mode. A synthesis of [Re(CO)3L]+ [SbF6]- was carried out to establish the presence of the cation, fac-[Re(CO)3L]+, in the complexes. The character of the anions was confirmed by negative ion MALDI-TOF mass spectrometry. The cation is fluxional; the P-phenyl rings oriented towards the metal moiety exhibit restricted rotation at low temperature. The free energy of activation, ΔG ?, for hindered rotation is ca. 47 kJ mol-1 for all complexes. Solid-state 31P NMR data are reported for the free ligand and for the complexes, [Re(CO)3L][SbF6] and [Re(CO)3L][Re2(CO)6(μ-X)3] (X=Cl, Br or I).