The preparation, properties, and reactions of a series of complexes of general formula [MCl2(L)] are described for the first time (M = Pt) or reinvestigated (M = Pd) [L = Ph(H)N·N:[graphic omitted]:N·N(H)Ph (L1), Ph(H)N·N:C(Me)·C(Me):N·N(H)Ph (L2), and Ph(Me)N·N:C(Me)·C(Me):N·N(Me)Ph (L3)]. On treatment with base, complexes of L1 and L2 readily undergo hydrogen-chloride elimination to give species of formula [{MCl(L - H)}x] which contain a covalent M-N bond. These complexes in solution undergo further transformation with loss of a hydrogen molecule and formation of ortho-metallated diazoalkene derivatives, [M(L - 3H)Cl]. The complex [PtCl2(L3)], on treatment with silica gel or refluxing in nitromethane, affords, as the palladium analogue, the cyclometallated species [PtCl(L3 - H)]. The reactivities of the ligands with palladium and platinum fire compared.
Complexes of osazones with palladium(II) and platinum(II): Isomerization, oxidation, and ortho-metallation of the co-ordinated ligands / Luciana, Maresca; Giovanni, Natile; Lucio, Cattalini; Gasparrini, Francesco. - In: JOURNAL OF THE CHEMICAL SOCIETY DALTON TRANSACTIONS. - ISSN 0300-9246. - STAMPA. - 15(1975), pp. 1601-1605. [10.1039/dt9750001601]
Complexes of osazones with palladium(II) and platinum(II): Isomerization, oxidation, and ortho-metallation of the co-ordinated ligands
GASPARRINI, Francesco
1975
Abstract
The preparation, properties, and reactions of a series of complexes of general formula [MCl2(L)] are described for the first time (M = Pt) or reinvestigated (M = Pd) [L = Ph(H)N·N:[graphic omitted]:N·N(H)Ph (L1), Ph(H)N·N:C(Me)·C(Me):N·N(H)Ph (L2), and Ph(Me)N·N:C(Me)·C(Me):N·N(Me)Ph (L3)]. On treatment with base, complexes of L1 and L2 readily undergo hydrogen-chloride elimination to give species of formula [{MCl(L - H)}x] which contain a covalent M-N bond. These complexes in solution undergo further transformation with loss of a hydrogen molecule and formation of ortho-metallated diazoalkene derivatives, [M(L - 3H)Cl]. The complex [PtCl2(L3)], on treatment with silica gel or refluxing in nitromethane, affords, as the palladium analogue, the cyclometallated species [PtCl(L3 - H)]. The reactivities of the ligands with palladium and platinum fire compared.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.