Abstract
The addition of the catalyst (FeCp(CO)2)2 to the solution reactions of Ru4(μ-H)4(co)12 with L (L = P(OEt)3, PPh3, AsPh3) affords the substitution derivatives Ru4(μ-H)4(CO)12-xLx(x = 1–4, L = P(OEt)3, PPh3; x = 1, 2, L = AsPh3) with good selectivity modulated by the carbonyl to ligand ratio and in satisfactory yield. Multinuclear variable temperature NMR studies at different temperatures show that the tri- and tetrasubstituted products are each obtained in only one isomeric form while for L = P(OEt)3 the monosubstituted derivative exists as two isomers in solution. The disubstituted derivatives form only one isomer for L = P(OEt)3, whereas two isomers are observed for L = PPh3, AsPh3. The stereochemical nonrigidity of the title compounds has been investigated, and correlations between solid-state and solution structures are discussed.
Original language | English |
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Pages (from-to) | 3693-3703 |
Number of pages | 11 |
Journal | Organometallics |
Volume | 14 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug 1995 |
Externally published | Yes |