title: Tricarbonyl[1,1',1"-ethylidynetris(pyrazole-kappaN2)]rhenium(I) bromide and tricarbonyl[methylidynetris(pyrazole-kappaN2)]rhenium(I) iodide ethanol hemisolvate.
abstract: The two title compounds, [Re(C(10)H(10)N(6))(CO)(3)]Br and [Re(C(11)H(12)N(6))(CO)(3)]I.0.5C(2)H(6)O, have slightly distorted octahedral geometries about the rhenium centers. The distortions result from the constraints of the eta(3)-coordinated tris(pyrazol-1-yl)methane ligands in each case which reduce the N-Re-N bond angles well below the preferred value of 90 degrees for facially disposed ligands at a six-coordinate metal center.
authors.affiliation: Department of Chemistry, University of Louisville, Louisville, KY 40292, USA. dorothy.gibson@louisville.edu
authors.forename: D H
authors.initials: DH
authors.lastname: Gibson
authors.forename: M S
authors.initials: MS
authors.lastname: Mashuta
authors.forename: H
authors.initials: H
authors.lastname: He