title: Cage Opening of a Carborane Ligand by Metal Cluster Complexes.
abstract: The reaction of Os3 (CO)10 (NCMe)2 with closo-o-C2 B10 H10 has yielded two interconvertible isomers Os3 (CO)9 (μ3 -4,5,9-C2 B10 H8 )(μ-H)2 (1 a) and Os3 (CO)9 (μ3 -3,4,8-C2 B10 H8 )(μ-H)2 (1 b) formed by the loss of the two NCMe ligands and one CO ligand from the Os3 cluster. Two BH bonds of the o-C2 B10 H10 were activated in its addition to the osmium cluster. A second triosmium cluster was added to the 1 a/1 b mixture to yield the complex Os3 (CO)9 (μ-H)2 (μ3 -4,5,9-μ3 -7,11,12-C2 B10 H7 )Os3 (CO)9 (μ-H)3 (2) that contains two triosmium triangles attached to the same carborane cage. When heated, 2 was transformed to the complex Os3 (CO)9 (μ-H)(μ3 -3,4,8-μ3 -7,11,12-C2 B10 H8 )Os3 (CO)9 (μ-H) (3) by a novel opening of the carborane cage with loss of H2 .
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, JM Palms Ctr for GSR, Columbia, SC, 29208, USA. ADAMSRD@mailbox.sc.edu.
authors.forename: Richard D
authors.identifier: http://orcid.org/0000-0003-2596-5100
authors.initials: RD
authors.lastname: Adams
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, JM Palms Ctr for GSR, Columbia, SC, 29208, USA.
authors.forename: Joseph
authors.initials: J
authors.lastname: Kiprotich
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, JM Palms Ctr for GSR, Columbia, SC, 29208, USA.
authors.forename: Dmitry V
authors.identifier: http://orcid.org/0000-0002-5653-9502
authors.initials: DV
authors.lastname: Peryshkov
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, JM Palms Ctr for GSR, Columbia, SC, 29208, USA.
authors.forename: Yuen Onn
authors.initials: YO
authors.lastname: Wong
keywords: cage-opening; carborane; clusters; crystal structure; osmium