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The RP-bridged clusters Fe3(C0)10(mu3-RP) (1) (A) when treated with XCN- (X = S, Se, Te) yield the anionic addition products (D). Reaction of these adducts with Et3OBF4 leads to the high yield formation (> 90%) of Fe3(CO)9(mu3-RP)(mu3-X) (2). The compounds 2 are also obtained from 1 and R’XXR’ (X = Se, Te), albeit less selectively (~60%). In addition the binuclear species Fe2(CO)6(mu2-R’X)(mu2-RPXR’) (3) are obtained (~30%). In the case of R’TeTeR’ Fe3(CO)8(mu3-RP)(mu2-R’Te)2 (4) is for...The RP-bridged clusters Fe3(C0)10(mu3-RP) (1) (A) when treated with XCN- (X = S, Se, Te) yield the anionic addition products (D). Reaction of these adducts with Et3OBF4 leads to the high yield formation (> 90%) of Fe3(CO)9(mu3-RP)(mu3-X) (2). The compounds 2 are also obtained from 1 and R’XXR’ (X = Se, Te), albeit less selectively (~60%). In addition the binuclear species Fe2(CO)6(mu2-R’X)(mu2-RPXR’) (3) are obtained (~30%). In the case of R’TeTeR’ Fe3(CO)8(mu3-RP)(mu2-R’Te)2 (4) is formed as an additional product. The structures of the compounds 2, 3 and 4 are documented by X-ray analysis. The geometry of 2 is analysed in terms of a metallaheterocyclobutadiene model, eta4-[Fe(CO)3-X-Fe(CO)3-PR]Fe(CO)3, in comparison with known structural analogues. NMR data (1H, 13C, 31P, 77e, 125Te) are reported for all new compounds.» weiterlesen» einklappen

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