New C2-Chiral Bidentate Ligands Bridging the gap between donor phosphine and acceptor carbonyl ligands |
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| Authors: | E Peter Kündig Chantal Dupr Bernadette Bourdin Allan Cunningham Dominique Pons |
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| Institution: | E. Peter Kündig,Chantal Dupré,Bernadette Bourdin,Allan Cunningham,Dominique Pons |
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| Abstract: | Two new C2 chiral bidentate phosphorous ligands have been prepared in enantiomerically pure form. The two phosphorous centers bear electron-withdrawing groups ((CF3)2CH? O, C6F5) and are linked by a trans-cyclopentane-1,2-diol-derived bridge. Photolysis of Cr(η6-C6H6)(CO)3] in the presence of these two new ligands and of two previously reported bidentate phosphites, and fluorophosphinites (L) afforded Cr(η6-C6H6)(CO)L] complexes. IR Spectral comparison of the complexes shows the new ligands to be intermediate in their bonding properties between alkyl phosphites and CO. |
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