TY - JOUR
T1 - Synthesis of novel symmetrical and unsymmetrical dirhenium complexes with a [re2o2] core
T2 - {cpre[oc(x)n(ph)]} 2(μ-o)2 and {cpreo}{cpre[oc(x)n(ar)]}(μ-o)2 (x=o, s)
AU - Wang, Mei
AU - Herrmann, Wolfgang A.
PY - 1994/11/1
Y1 - 1994/11/1
N2 - In the presence of triphenylphosphine Cp*ReCO3reacts with aryl isothiocyanates in an equal equivalence via an intermediate (Cp*ReO)2(μ-O)2 to give novel unsymmetrical dirhenium oxo complexes with a [Re2O2] core, {Cp*ReO}{Cp*Re[OC(S)N(Ar)]}(μ-O)2 (la: Ar=C6H5; lb: Ar=m-F3CC6H4), while under the same conditions a monorhenium oxo complex Cp*Re(O)[OC(O)N(Ph)] (2) as the main product and an unsymmetrical dirhenium oxo complex {Cp*ReO} {Cp*Re[OC(O)N(Ph)]}(μ-O)2 (3) are afforded from the reaction of Cp*ReO3 with aryl isocyanates. By contrast, only (Cp*ReO)2(μ-O)2 is formed from the reaction of Cp*ReCO3with alkyl isothiocyanates in the presence of triphenylphosphine. Both unsymmetrical dirhenium oxo complexes 1 and 3 can further react with a large excess of aryl isothiocyanates and -isocyanates to form symmetrical dirhenium complexes {Cp*Re[OC(X)N(Ph)]}2(μ-O)2 (4: X=S; 5: X=0).
AB - In the presence of triphenylphosphine Cp*ReCO3reacts with aryl isothiocyanates in an equal equivalence via an intermediate (Cp*ReO)2(μ-O)2 to give novel unsymmetrical dirhenium oxo complexes with a [Re2O2] core, {Cp*ReO}{Cp*Re[OC(S)N(Ar)]}(μ-O)2 (la: Ar=C6H5; lb: Ar=m-F3CC6H4), while under the same conditions a monorhenium oxo complex Cp*Re(O)[OC(O)N(Ph)] (2) as the main product and an unsymmetrical dirhenium oxo complex {Cp*ReO} {Cp*Re[OC(O)N(Ph)]}(μ-O)2 (3) are afforded from the reaction of Cp*ReO3 with aryl isocyanates. By contrast, only (Cp*ReO)2(μ-O)2 is formed from the reaction of Cp*ReCO3with alkyl isothiocyanates in the presence of triphenylphosphine. Both unsymmetrical dirhenium oxo complexes 1 and 3 can further react with a large excess of aryl isothiocyanates and -isocyanates to form symmetrical dirhenium complexes {Cp*Re[OC(X)N(Ph)]}2(μ-O)2 (4: X=S; 5: X=0).
UR - http://www.scopus.com/inward/record.url?scp=84963159837&partnerID=8YFLogxK
U2 - 10.1080/00945719408002570
DO - 10.1080/00945719408002570
M3 - Article
AN - SCOPUS:84963159837
SN - 0094-5714
VL - 24
SP - 1423
EP - 1431
JO - Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry
JF - Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry
IS - 9
ER -