319431-11-3Relevant academic research and scientific papers
Synthesis and reaction of the novel complex [AsPh4][OsCl5(H2O)]. X-ray structure analysis of [AsPh4][OsCl5(H2O)]·2EtOH and [AsPh4][OsCl5(EtOH)]·EtOH
Maiboroda,Rheinwald,Lang
, p. 5725 - 5730 (2000)
The synthesis and characterization of the anionic, mononuclear and homobinuclear osmium complexes [AsPh4]-[OsCl5L]·xEtOH [L = H2O, x = 2 (9); L = EtOH, x = 1 (10a); L = py, x = 0 (10b)] and [AsPh4]2[Cl5Os-(pyz)OsCl5] (12) (pyz = pyrazine) are described. Upon reduction in a chloride-containing medium, OsO4 (1) affords the osmium(IV) species [OsCl5(H2O)]- (2), which could be isolated by extraction with n-tributyl phosphate (TBP): Complex 9 is the first fully characterized chloroaquo complex of Os(IV). This complex is an effective starting material for the preparation of novel species, such as 10a, 10b, and 12. The X-ray structures of 9 and 10a were determined. Both compounds crystallize in the monoclinic space group P21/n. 9: C28H34AsCl5O3Os, a = 10.910(4) A, b = 17.127(5) A, c = 17.555(7) A, β = 103.77(2)°, V = 3186(2) A3, and Z = 4. 10a: C28H32-AsCl5O2Os, a = 10.7762(2) A, b = 17.3939(1) A, c = 17.1477(3) A, β = 103.645(1)°, V = 3123.45(8) A, and Z = 4. Complexes 9 and 10a crystallize with two and one molecule of EtOH and are bonded via hydrogen bridges to the H2O and EtOH ligand in 9 and 10a, respectively.
