Studies of the coupling of aryl isothiocyanates to bridging alkyne ligands in dirhenium carbonyl complexes

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Organometallics; (United States)

DOI:https://doi.org/10.1021/om00034a012· OSTI ID:5576512

Adams, R D; Chen, L; Wu, W ^[1]

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1. Univ. of South Carolina, Columbia, SC (United States)

Reactions of the lightly stabilized dimetalated olefin complex Re(CO)[sub 4][trans-[mu]-HC=C(CO[sub 2]Me)]Re(CO)[sub 4](NCMe) (1) with aryl isothiocyanates have yielded a series of complexes having the general formula Re(CO)[sub 4][(E)-HC=C(CO[sub 2]Me)CN(Ar)=S]Re(CO)[sub 4] (2a, Ar = p-tolyl; 2b, Ar = Ph; 2c, Ar = p-chlorophenyl). Compounds 2a-c were formed by the loss of NCMe from 1 and the addition and insertion of one isothiocyanate molecule into one of the metal-carbon bonds to form a thioamido group that is chelated to one of the rhenium atoms. When heated to 98[degrees]C, complexes 2a-c were decarbonylated and converted into the dimeric complexes [Re-(CO)[sub 4](E)-HC=C(CO[sub 2]ME)CN(Ar)=S]Re(CO)[sub 3] B[sub 2] (3a, Ar = p-tolyl; 3b, Ar = Ph; 3c, Ar = Ph; 3c, Ar = p-chlorophenyl), in which the sulfur atoms of the thioamido groups bridge the two metal atoms. Decarbonylation of 2a-c at 80[degree]C in the presence of [Re(CO)[sub 4]([mu]-I)] B[sub 2] yielded the trirhenium complexes Re(CO)[sub 4][[mu]-(E)-HC=C(CO[sub 2]Me)CN(Ar)=S]Re[sub 2](CO)[sub 7] ([mu]-I) (4a, Ar = p-tolyl; 4b, Ar = Ph; 4c, Ar = p-chlorophenyl). 12 refs., 4 figs., 7 tabs.

• OSTI ID: 5576512
• Journal Information: Organometallics; (United States), Vol. 12:10; ISSN 0276-7333
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBONYLS
CHEMICAL REACTIONS
MOLECULAR STRUCTURE
ALKENES
ALKYNES
CHELATES
COUPLING
CRYSTAL STRUCTURE
LIGANDS
ORGANOMETALLIC COMPOUNDS
RHENIUM COMPLEXES
COMPLEXES
HYDROCARBONS
ORGANIC COMPOUNDS
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties
400102 - Chemical & Spectral Procedures