Formation of carbonylrhenium cryptates with alkali metal cations: Coordination chemistry studies of [Ph2P(E)NP(E)Ph2]−, E=O, S, Se towards ReBr(CO)5
摘要:
Reaction of ReBr(CO)(5) with Li[Ph2P(O)NP(O)Ph-2] afforded the cryptate Li[Re-2(CO)(6)]{mu-Ph2P(O)NP(O)Ph-2-kappa O-2,O'}(3)]; whereas K[Ph2P(O)NP(O)Ph-2] reacted with ReBr(CO)(5) to give K[Re-2(CO)(6){mu-Ph2P(O)NP(O)Ph-2-kappa O-2,O'}{Ph2P(O)NP(O)Ph-2-kappa O-2,O'}(2)]. Other chalcogen ligands' salts M[Ph2P(E)NP(E)Ph-2], E = Se and S. M = K and Li gave dirhenium carbonyls with bromido and Ph2P(E)NP(E)Ph-2, E = Se or S bridges upon reaction with ReBr(CO)(5). (C) 2010 Elsevier Ltd. All rights reserved.
Six-membered tetracarbonylmanganese(I) and -rhenium(I) metalacycles containing the [Ph2P(Se)NP(Se)Ph2] ligand: solution and solid state characterization
摘要:
The halocarbonyls BrM(CO)(5), M=Mn and Re, were reacted with the KN(SePPh2)(2) salt in equimolar amounts; the reactions were thermally carried out and resulted in the generation of the hexacoordinated isostructural complexes [M(CO)(4){Ph2P(Se)NP-(Se)Ph-2-Se,.Se'}] with a twist MSePNPSe ring conformation. Complexes' characterizations were achieved by IR, mass, NMR (H-1, C-13, (31)p, Se-77) spectroscopies, and by single-crystal X-ray diffraction. (C) 2004 Published by Elsevier B.V.