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Binuclear Complexes of Ruthenium with Diphosphines and Bridging Benzene-1,2-diamide. X-Ray Crystal Structure of (CO)2(PPh3)2>*C6H5Me

DOI: 10.1039/DT9910002019

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Journal of the Chemical Society, Dalton Transactions p. 2019 - 2026 (1991)

Update date:2022-07-29

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Authors:

Anillo, AdelaAnillo, Adela

Obeso-Rosete, RicardoObeso-Rosete, Ricardo

Pellinghelli, Maria AngelaPellinghelli, Maria Angela

Tiripicchio, AntonioTiripicchio, Antonio

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Article abstract of DOI:10.1039/DT9910002019

The binuclear complex (CO)4(PPh3)2> 1 reacts with the diphosphines (Ph2P)2X , in boiling toluene, to give purple solutions from which the yellow compounds (CO)3(PPh3)(diphosphine)> -(μ-dppm)(CO)2(PPh3)2> 7 as the unique product.All these new complexes can be obtained in good yields by reaction of with in boiling mesitylene.Compound 1 also reacts with (PPh3)3> or in boiling xylene to give (CO)3(PPh3)3> 8 which easily regenerates 1 by reaction with CO.An excess of diphosphine (except for dppm) in the reaction with 1 produced the mononuclear complexes (CO)(diphosphine)> and and for the reaction with dppb the complexes (CO)3(dppb-P)(dppb-PP')> 9, <μ-dppb)(CO)2(PPh3)2> 10, (CO)2(dppb)2> 11 and 12 were also detected or isolated.All complexes have been characterized by elemental analysis and by IR and NMR spectroscopy.The structure of the toluene solvate of 7 has been determined by X-ray diffraction methods: monoclinic, space group P21/n, with a = 18.563(8), b = 21.066(9), c = 17.936(7) Angstroem, β = 110.47(2) deg and Z =4.The structure was solved from diffractometer data by Patterson and Fourier methods and refined by full-matrix least squares to R = 0.0524 for 6679 observed reflections.The two Ru atoms are doubly bridged by the nitrogen atoms of 1,2-diimine ligand with a short Ru-Ru separation, 2.562(1) Angstroem, consistent with a metal-metal bond.

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Product name:{Ru(CO)2(P(C6H5)3)(dppb)}

Cas No:137193-00-1

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