21192-24-5Relevant articles and documents
Bhaduri, S.,Johnson, B. F. G.,Savory, C. J.,Segal, J. A.,Walter, R. H.
, (1974)
Steric limitations in associative substitution reactions of Os3(CO)9(μ-C4Ph4)
Poe, Anthony J.,Farrar, David H.,Ramachandran, Ravindranath,Moreno, Consuelo
, p. 82 - 89 (2008/10/08)
Reactions of the cluster Os3(CO)9(μ-C4Ph4) (1) with a large number of smaller P-donor nucleophiles (Tolman cone angle θ ≤ 143°) proceed rapidly in heptane at room temperature via associative adduct formation to form the monosubstituted products. However, reactions with several larger P-donor nucleophiles (θ ≤ 145°) in heptane at room temperature yield, in a single observable bimolecular step, a mixture of mononuclear and dinuclear products and it is therefore not possible to synthesize the monosubstituted clusters directly with these larger ligands. Crystallographic structures of Os3(CO)8(etpb)(μ-C4Ph 4)·(CH3OH) (2etpb) (etpb = P(OCH2)3CEt) and Os3(CO)8-(P(OPh)3)(μ-C4Ph 4)·(C6H14) (2P(OPh)3) have been determined and show that the substituent has displaced a CO ligand from the Os(CO)4 moiety in 1.
Kinetics and mechanism of carbon monoxide substitution of osmium pentacarbonyl
Shen, Jian-Kun,Gao, Yi-Ci,Shi, Qi-Zhen,Basolo, Fred
, p. 4304 - 4306 (2008/10/08)
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