The reaction of Na2[Fe(CO)4] · xTHF with Ag2(dppm)2(NO3)2 and Au2(dppm)2Cl2, respectively affords the new [Ag3{μ3-Fe(CO)4}(dppm)3][NO 3] and [Au3{μ-Fe(CO)4}(dppm)2][Cl] derivatives in high yields. These have been crystallised either from dichloromethane or THF by precipitation with hexane and an X-ray diffraction study has unambiguously shown that the Fe(CO)4 unit is triply bridging in [Ag3{μ3-Fe(CO)4}(dppm)3] + and doubly bridging in [Au3{μ-Fe(CO)4}(dppm)2][Cl]. The [Ag3{μ3-Fe(CO)4}(dppm)3] + cation has also been obtained from degradation of [Ag13{μ3-Fe(CO)4}8]3- with dppm. However, this preparation is less convenient owing to concomitant formation of iron carbonyl anions as side-products.
Albano V.G., Castellari C., Iapalucci M.C., Longoni G., Monari M., Paselli A., et al. (1999). Synthesis, chemical characterisation and molecular structure of [Ag3{μ3-Fe(CO)4}(dppm)3][NO 3] and [Au3{μ-Fe(CO)4}(dppm)2][Cl]1. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 573(1-2), 261-266 [10.1016/S0022-328X(98)00832-8].
Synthesis, chemical characterisation and molecular structure of [Ag3{μ3-Fe(CO)4}(dppm)3][NO 3] and [Au3{μ-Fe(CO)4}(dppm)2][Cl]1
Albano V. G.;Castellari C.;Iapalucci M. C.;Longoni G.;Monari M.;Paselli A.;Zacchini S.
1999
Abstract
The reaction of Na2[Fe(CO)4] · xTHF with Ag2(dppm)2(NO3)2 and Au2(dppm)2Cl2, respectively affords the new [Ag3{μ3-Fe(CO)4}(dppm)3][NO 3] and [Au3{μ-Fe(CO)4}(dppm)2][Cl] derivatives in high yields. These have been crystallised either from dichloromethane or THF by precipitation with hexane and an X-ray diffraction study has unambiguously shown that the Fe(CO)4 unit is triply bridging in [Ag3{μ3-Fe(CO)4}(dppm)3] + and doubly bridging in [Au3{μ-Fe(CO)4}(dppm)2][Cl]. The [Ag3{μ3-Fe(CO)4}(dppm)3] + cation has also been obtained from degradation of [Ag13{μ3-Fe(CO)4}8]3- with dppm. However, this preparation is less convenient owing to concomitant formation of iron carbonyl anions as side-products.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
