Multinuclear and Dynamic NMR Study of trans-[Pt(Cl)(PHCy2)2(PCy2)], [Pt(Cl)(PHCy2)3][BF4], [Pt(Cl)(PHCy2)3][Cl], trans-[Pt(Cl)(PHCy2)2{P(S)Cy2}], and trans-[Pt(Cl)(PHCy2)2{P(O)Cy2}]. Influence of Intramolecular P=O···H-P and Cl···H-P Interactions on Restricted Rotation about Pt-P Bond. X-ray Structure of trans-[Pt(Cl)(PHCy2)2{P(O)Cy2}]

Autor: MASTRORILLI P., NOBILE C. F., LATRONICO M., GALLO V., ENGLERT U., SCIACOVELLI O., FANIZZI, Francesco Paolo
Přispěvatelé: Mastrorilli, P., Nobile, C. F., Latronico, M., Gallo, V., Englert, U., Fanizzi, Francesco Paolo, Sciacovelli, O.
Jazyk: angličtina
Rok vydání: 2005
Popis: Dynamic NMR expts. on trans-[Pt(Cl)(PHCy2)2{P(X)Cy2}]z where X is a lone pair (1, z = 0), H (2, z = +1), S (3, z = 0), or O (4, z = 0) show that the rotation around the P(X)-Pt bond is hindered for all mols. studied, with G.thermod. ranging from 8.2 to 11.0 kcal/mol. The highest value of the series was calcd. for trans-[Pt(Cl)(PHCy2)2{P(O)Cy2}] (4) where intramol. P:OH-P interactions act as a mol. brake at room temp. Single-crystal x-ray diffraction confirms the presence of both intra and intermol. P:OH interactions in solid 4. In the case of [Pt(Cl)(PHCy2)3]Cl, multinuclear NMR anal. indicates a P-HCl- interaction in arom. or halogenated solvents which could have also a minor effect on the rotational barrier around the P(X)-Pt bond.
Databáze: OpenAIRE