98535-92-3Relevant academic research and scientific papers
Pyrazolate A-Frame Rhodium Complexes. Crystal Structures of and
Oro, Luis A.,Carmona, Daniel,Perez, Pedro L.,Esteban, Montserrat,Tiripicchio, Antonio,Tiripicchio-Camellini, Marisa
, p. 973 - 980 (2007/10/02)
New complexes of formula +, having the A-frame type structure with different pyrazolate-type groups L as bridgehead ligand, have been prepared from trans-(dppm = Ph2PCH2PPh2).Iodine undergoes transannular oxidative addition to to produce rhodium(II) complexes with direct rhodium-rhodium bonds.The crystal structures of the complexes and (dmpz = 3,5-dimethylpyrazolate) have been determined by X-ray methods.The former crystallises in the monoclinic space group P21/a with unit-cell dimensions a = 22.560(9), b = 26.649(9), c = 10.221(7) angstroem, β = 102.68(3) deg, and Z = 4.The structure has been refined to R = 0.072 on the basis of 4342 observed reflections.The latter crystallises in the monoclinic space group P2/n with a = 16.855(6), b = 14.713(3), c = 14.008(4) angstroem, β = 90.66(2) deg, and Z = 2.The structure has been refined to R = 0.078 (3048 observed reflections).In both complexes two rhodium atoms are triply bridged by two molecules of dppm and by a dmpz ligand through its nitrogen atoms.In the first complex each Rh atom has a square-planar co-ordination, in the second the oxidative addition of iodine results in a change in co-ordination to octahedral and formation of a metal-metal bond .
Oro, Luis A.,Carmona, Daniel,Perez, Pedro L.,Esteban, Montserrat,Tiripicchio, Antonio,Tiripicchio-Camellini, Marisa
, p. 973 - 980 (2007/10/02)
New complexes of formula +, having the A-frame type structure with different pyrazolate-type groups L as bridgehead ligand, have been prepared from trans-(dppm = Ph2PCH2PPh2).Iodine undergoes transannular oxidative addition to to produce rhodium(II) complexes with direct rhodium-rhodium bonds.The crystal structures of the complexes and (dmpz = 3,5-dimethylpyrazolate) have been determined by X-ray methods.The former crystallises in the monoclinic space group P21/a with unit-cell dimensions a = 22.560(9), b = 26.649(9), c = 10.221(7) angstroem, β = 102.68(3) deg, and Z = 4.The structure has been refined to R = 0.072 on the basis of 4342 observed reflections.The latter crystallises in the monoclinic space group P2/n with a = 16.855(6), b = 14.713(3), c = 14.008(4) angstroem, β = 90.66(2) deg, and Z = 2.The structure has been refined to R = 0.078 (3048 observed reflections).In both complexes two rhodium atoms are triply bridged by two molecules of dppm and by a dmpz ligand through its nitrogen atoms.In the first complex each Rh atom has a square-planar co-ordination, in the second the oxidative addition of iodine results in a change in co-ordination to octahedral and formation of a metal-metal bond .
