Synthesis and characterization of 1,3-diamine(phosphine)‎-ruthenium(II)‎ complexes using monodentate and bidentate phosphine ligands

Abstract EN

The neutral Ru (II), chelating phosphine or diphosphine with 1, 3-diamine (1, 3-diamino-2-propanol) of type [RuCl2 (PP) (NN)], are readily synthesized in very good yields at an inert atmosphere using dichloromethane as solvent.

For the first time, the ruthenium (II) complexes : [trans-dichloro-(bis (triphenylphosphine) (1,3-diamino-2-propanol) ruthenium (II)] (2), [trans-dichloro (1,3-bis (diphenylphosphino) propane) (1,3-diamino-2-propanol) ruthenium (II)] (4) and [trans-dichloro (bis (ether-phosphine)-(1,3-diamino-2-propanol) ruthenium (II)] (6) have been prepared at room temperature starting from [RuCl2 (PPh3) 3], [RuCl2 (Ph2PCH2CH2OCH3) 2] and [RuCl2 (dppp) 2], respectively.

Trans-RuCl2 with nitrogen atoms are trans to phosphorus atoms are structurally favored (kinetic) isomer.

This structural phenomenon has been monitored by 31P {1H} NMR in CD2Cl2.

All the mentioned complexes were fully characterized by NMR, IR, and FAB-MS as well as elemental analysis.