77244-03-2Relevant academic research and scientific papers
Reactions of BF4 with alkynes: synthesis of new hydride-vinyl iridium(III) complexes
Esteruelas, Miguel A.,Garcia, Maria P.,Martin, Marta,Nuernberg, Oliver,Oro, Luis A.,Werner, Helmut
, p. 249 - 258 (2007/10/02)
One of the two acetone ligands in the complex BF4 (1) is displaced by pyrazole (Hpz) to give BF4 (2).Treatment of 2 with methyl propiolate and acetylenedicarboxylic dimethyl ester leads to the cationic complexes (3), (4) and (5).The molecular structure of 3 has been determined by X-ray analysis. 3 crystallizes with an acetone molecule in the lattice, in the space group P21/m with a=9.661(3) Angstroem, b=22.903(3) Angstroem, c=11.056(3) Angstroem and β=99.82(1)o.The coordination around the iridium atom is a distorted octahedron with the two phosphorus atoms of the triphenylphosphine ligands occupying trans positions.The equatorial plane is formed by the α-C atom, the oxygen atom of the carbonyl group of the ester, the hydride and a nitrogen atom of the pyrazole ligand. 3 reacts with 4-1,5-COD)>2> to give, via a redistribution reaction, (6) and 4-1,5-COD)>2>.The methanol molecule of 6 is displaced by P(OMe)3 and CO to yield (L=P(OMe)3 (7) or CO (8)).The vinyl complexes BF4 (9) and (10) were prepared by reaction of 3 with P(OMe)3 and Cl- respectively.Complex 10 reacts with 4-1,5-COD)>2> to afford the heterobimetallic compound 4-1,5-COD)> (11). Key words: Iridium; Hydride; Vinyl; Alkyne
GOLD(I) AND PLATINUM(II) AZOLATES AS LIGANDS IN CATIONIC RHODIUM(I) COMPLEXES
Uson, R.,Oro, L. A.,Ciriano, M. A.,Pinillos, M. T.,Cabeza, J. A.
, p. 249 - 256 (2007/10/02)
Several cationic heterometallic rhodium complexes have been obtained by using the complexes ImAuPPh3 or (az)2Pt(dpe) (az=imidazolate (Im) or pyrazolate (Pz) anions) as ligands.Attempts to prepare rhodium(I)-gold(I) derivatives containing pyrazolate-bridging ligands proved unsuccessful, rearrangements giving the complexes 2 and ClO4, ClO4 or AuClPPh3 as end-products.
