Rhenium complexes thiols

Pseudooctahedral coordination of rhenium(III) centers has also been found for mixed-ligand complexes with tertiary phosphines and A-heterocyclic thiols which coordinate as their neutral thione tautomers. A representative example with thiazoline-2-thiol (HSthiaz) has been characterized structurally. The paramagnetic complex [ReCl3(HSthiaz)2(PPh3)] (235) contains the HSthiaz ligands in trans position. ... 

The coordination abilities of A-heterocyclic thiols such as 2-thiopyridine, HSpy (66a), 2-mercapto-pyrimidine, Hspym (66b), or 2-mercaptothiazoline (67) with rhenium centers has already been described for oxorhenium(V) complexes is Section 5.3.2.3.L It has been outlined that ligands with five-membered rings preferably coordinate as monodentate neutral thiones whereas chelate formation is possible for mercaptopyridine or mercaptopyrimidine. Similar complex formation... 

The rich and diversified rhenium chemistry developed with the PNX (X is O, S) phosphines motivated the authors to explore their use in the so-called 3+1 approach [58,59]. Different model complexes, 55-58, were synthesized by reacting [NBuJ [ReOClJ with H2PNO or with H2PNS in the presence of several monodentate thiols as coligands (Scheme 13) [58]. 

Chi, D.Y., O Neil, J.P., Anderson, C.J., Welch, M.J. and Katzenellen-bogen, J.A. (1994) Homodimeric and heterodimeric bis(amino thiol) oxometal complexes with rhenium(V) and technetium(V). Control of heterodimeric complex formation and an approach to metal complexes that mimic steroid hormones. J. Med. Chem. 37 928-937. 

Rhenium(VII) complexes, 196-202 amides, 196 deuterides, 201 halides, 201 hydrides, 201 imides, 196 nitrides, 196 thiols, 201 Rhodium occurrence, 902... 

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