Chelating 2-(diphenylphosphino)pyridine. Synthesis and structure of dichlorodicarbonyl[2-(diphenylphosphino)pyridine]ruthenium(II)

STRUCTURAL AND PHOTOPHYSICAL PROPERTIES OF A MONONUCLEAR Re(I) COMPLEX:[P,N-{(C6H5)2(C5H5N)P}Re(CO)3Br]

“…Structures of monometallic complexes where the ligand exhibits a bidentate P,N (chelating) mode have been described for Ru, [9][10][11][12][13][14] 26 This latter species have been described to have an absorption band in the visible region at 479 nm which have been assigned as MLCT band and assigned with the help of TDDFT to a…”

Structures, preparation and catalytic activity of ruthenium cyclopentadienyl complexes based on pyridyl-phosphine ligand

“…Synthetic approaches to such complexes typically falls into one of the two broad categories: (i) synthesis of functionalized cyclopentadienes followed by coordination to the metal, or (ii) anchoring of an additional donor ligand to an already formed cyclopentadienyl complex [19][20][21][22][23][24]. We feel that the latter approach is more versatile albeit less explored [25][26][27][28][29].…”

Synthesis and Structure of Dicarbonyldichloro{2-(Diphenylphosphineoxide)pyridine}ruthenium(ii)

“…The dinuclear complex [{Ru(CO) 3 Cl 2 } 2 ] reacts in a 1:2 molar ratio with the 2-(diphenylphosphineoxide)pyridine ligand (PyPOPh 2 ) in refluxing ethanol by cleavage of the chloride bridges to yield the neutral mononuclear complex [Ru(K 2 -PyPOPh 2 -N,O)(CO) 2 Cl 2 ]. The complex was isolated as stable solid and characterized by elemental analysis, FTIR and NMR spectroscopy.…”

“…2 An example of this behaviour is the reaction of the trinuclear complex [Ru(CO) 3 (PyPPh 2 )] 3 with Cl 2 in CH 2 Cl 2 , yielding the mononuclear complex [Ru(k 2 -PyPPh 2 -N,P)(CO) 2 Cl 2 ], which presents a cis(CO)-cisCl arrangement. 3 The formation of mononuclear dicarbonyldihalide ruthenium complexes containing bidentate ligands is complicated due to the various orientations of the carbonyl and halogen ligands, which allows the coexistence of both cis and trans-halogen isomers. In fact, the formation of mononuclear ruthenium bipyridine carbonyl complexes, such as [Ru(k 2 -bpy-N,N)(CO) 2 Cl 2 ], gives a single isomer or a mixture depending of the choice of solvent and the starting ruthenium reagent.…”

“…In fact, the formation of mononuclear ruthenium bipyridine carbonyl complexes, such as [Ru(k 2 -bpy-N,N)(CO) 2 Cl 2 ], gives a single isomer or a mixture depending of the choice of solvent and the starting ruthenium reagent. 4 Recently, we found that the reaction of the binuclear complex [{Ru(CO) 3 Cl 2 }] 2 with an unsymmetrical quinolinquinone ligand affords mononuclear complexes of the type [Ru(k 2 -N,O)(CO) 2 Cl 2 ] (N,O = 6-methoxybenzo[g]quinoline-5,10-dione), which shows a cis(CO)-transCl configuration. 5 Following our interest in the reactions of the dimer complex [{Ru(CO) 3 Cl 2 } 2 ] with bidentate unsymmetrical ligands, we report here the synthesis, spectroscopic and X-ray characterization of the neutral complex dicarbonyldichloro{2-(diphenylphosphineoxide)pyridine}ruthenium(II), [Ru(k 2 -PyPOPh 2 -N,O)(CO) 2 Cl 2 ].…”