title: The crystal structures of tetra-kis-(μ-n-butyrato-κ(2) O:O')bis[bromidorhenium(III)] and tetra-kis-(μ-n-butyrato-κ(2) O:O')bis[chlorido-rhenium(III)] aceto-nitrile disolvate.
abstract: The title complexes, [Re2Br2(O2CC3H7)4], (1), and [Re2(O2CC3H7)4Cl2]·2CH3CN, (2), both exhibit paddlewheel structures with four carboxyl-ate ligands bridging two Re(III) atoms. The Re-Re distances are 2.2325 (2) and 2.2299 (3) Å, indicating quadruple bonds between the Re(III) atoms in each complex. Both complexes contain an inversion center at the mid-point of the Re-Re bond. The Re-Br bond [2.6712 (3) Å] in (1) is 0.1656 (6) Å longer than the Re-Cl distance [2.5056 (5) Å] of (2). In (2), the N atom of each co-crystallized aceto-nitrile solvent mol-ecule is nearly equidistant between and in close contact with two carboxyl-ate C atoms.
authors: Department of Chemistry and Biochemistry, The College at Brockport, SUNY, Brockport, NY 14420, USA.
authors: Carly R
authors: CR
authors: Reed
authors: Department of Chemistry, University of Rochester, Rochester, NY 14627, USA.
authors: William W
authors: WW
authors: Brennessel
keywords: crystal structure; dihalido­tetra­kis­(butyrato)dirhenium(III,III); dirhenium tetra­carboxyl­ate; paddlewheel complex; quadruple bond