title: Bis(eta2-cyclooctene)(N,N-dimethyldithiocarbamato-S,S')iridium(I), the first example of a tetracoordinate Ir(I) complex containing twopi-bonded monoolefin ligands.
abstract: The title compound consists of [Ir(C3H6NS2)(C8H14)2] molecules lying on positions with site symmetry 2. Both the coordination plane, defined by the metal, S atoms and the two midpoints of the olefinic bonds, and the dithiocarbamate chelate system are essentially planar. The orientation of the coordinated C=C bonds with respect to the coordination plane is close to perpendicular [(C=C,Ir)/(Ir,S,S) interplanar angle: 79.4 (2) degrees ]. The Ir-C distances are 2.144 (3) and 2.155 (3) A, and the Ir-S bond length is 2.3661 (8) A. Due to pi-coordination, the olefinic bonds are elongated to 1.424 (5) A. The cyclooctene ligands adopt a crown conformation.
authors.affiliation: Institut für Anorganische Chemie, Universität Erlangen-Nürnberg, Egerlandstrasse 1, D-91058 Erlangen, Germany. dahlenburg@chemie.uni-erlangen.de
authors.forename: L
authors.initials: L
authors.lastname: Dahlenburg
authors.forename: M
authors.initials: M
authors.lastname: Kühnlein