title: Crystal structure and electronic and magnetic properties of hexacyanoosmate(III).
abstract: The [Os(III)(CN)6]3- anion is prepared by chemical oxidation in aqueous solution and isolated as yellow prisms of [Ph4P]3[Os(III)(CN)6].6H2O (1). This species crystallizes in the triclinic space group P with cell parameters a = 13.7609(11) A, b = 16.2275(13) A, c = 17.0895(14) A, alpha = 91.4040(10) degrees , beta = 109.3600(10) degrees , gamma = 102.3970(10) degrees , V = 3497.4(5) A(3), and Z = 2. The slightly distorted octahedral moiety displays Os-C and C-N bond lengths that average 2.058 and 1.146 A, respectively. Spin-orbit-coupling splitting of the ground-state term dominates the NIR region of the electronic spectrum and the magnetic behavior of 1. The experimental information points to higher spin delocalization over the coordinated cyanides than in [Fe(III)(CN)6]3-.
authors.affiliation: Departamento de Química Inorganica, Analítica y Química Física, INQUIMAE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina.
authors.forename: Pablo
authors.initials: P
authors.lastname: Albores
authors.forename: Leonardo D
authors.initials: LD
authors.lastname: Slep
authors.forename: Luis M
authors.initials: LM
authors.lastname: Baraldo
authors.forename: Ricardo
authors.initials: R
authors.lastname: Baggio
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Garland
authors.forename: Eva
authors.initials: E
authors.lastname: Rentschler