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Nucleophile Addition von Carbonylmetallaten an kationische Alkin‐Komplexe [CpL 2 M(η 2 ‐RC≡CR)] + (M = Ru, Fe): μ‐η 1 :η 1 ‐Alkin‐verbrückte Komplexe
Author(s) -
Breimair Josef,
Steimann Manfred,
Wagner Barbara,
Beck Wolfgang
Publication year - 1990
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19901230103
Subject(s) - alkyne , chemistry , nucleophile , cationic polymerization , ligand (biochemistry) , medicinal chemistry , crystal structure , bimetallic strip , metal , stereochemistry , crystallography , catalysis , polymer chemistry , biochemistry , receptor , organic chemistry
Hydrocarbon‐Bridged Complexes, XIIII). ‐ Nucleophilic Attack of Carbonylmetallates on Cationic Alkyne Complexes [CpL 2 M(η 2 ‐RC I CR)]+(M = Fe, Ru): μ‐η 1 : η 1 ‐Alkyne‐Bridged Complexes The σ,σ‐alkyne‐bridged complexes Cp(Me 3 P) 2 Ru[μ‐η 1 :η 1 ‐(MeO 2 C)C = C(CO 2 Me)]ML n ( 1 ) [ML n = Ru(CO) 2 Cp, Mn(CO) 5 , Re(CO) 5 ] are formed by addition of [Ru(Cp)(CO) 2 ] ‐ , [Mn‐(CO) 5 ] ‐ , and [Re(CO) 5 ] ‐ to the alkyne ligand of [Cp‐(Me 3 P) 2 Ru(MeO 2 CC≡CCO 2 Me)] + and by addition of [Re‐(CO) 5 ] ‐ to [Cp(OC)(Ph 3 P)Fe(MeC≡CMe)] + . The crystal structure of 1a was determined by X‐ray diffraction and allows the comparison of bimetallic complexes with M–C≡C–M, M–C(R)=C(R)–M, and M – CH 2 CH 2 –M bridges. Addition of [Re(CO) 5 ] ‐ to [Cp(OC)(L)Fe(RC≡CR)] + (L = CO:R = Me; L = P(OPh) 3 , PPh 3 ; R = Et) yields the complexes Cp(OC)‐(L)Fe‐Re(CO) 5 ( 3 ) with metal–metal bond.