Reactions of 1,8-bis(diphenylphosphino)naphthalene with ruthenium cluster carbonyls: C–H and C–P bond cleavage reactions
摘要:
Reactions between Ru-3(CO)(12) and 1,8-bis(diphenylphosphino)naphthalene (dppn) have given the four complexes Ru-3(mu-H){mu(3)-PPh2(nap)PPh(C6H4)}(CO)(8) (1), Ru-4(mu-H){mu(3)-PPh2(nap)PPh(C6H4)}(mu-CO)(3)(CO)(7) (2) and Ru-4(mu-H)(mu(3)-C6H4){mu-PPh(nap)PPh2}(CO)(11) (3) (in refluxing thf), and Ru-4{mu(4)-P(nap)PPh2}(mu(4)-C6H4)(mu-CO)(CO)(9) (4) (in refluxing toluene) which have been characterised by single crystal X-ray studies. They have been formed by aryl C-H and aryl C-P bond cleavage reactions, presumably from an initial (unobserved) chelate dppn complex. The unchanged chelating ligand is found in Ru-3(mu-dppm)(CO)(8)(dppn) (5), obtained from Ru-3(mu-dppm)(CO)(10) and dppn in refluxing thf. (C) 2004 Elsevier B.V. All rights reserved.