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. 2014 Sep 13;70(Pt 10):m349-50.
doi: 10.1107/S1600536814020273. eCollection 2014 Oct 1.

Crystal structure of tetra-kis-(μ-n-butyrato-κ(2) O:O')bis-[chlorido-rhenium(III)](Re-Re)

Michael P Thomson  1 , Natasha F O'Rourke  1 , Ruiyao Wang  2 , Manuel A S Aquino  1
Affiliations

Crystal structure of tetra-kis-(μ-n-butyrato-κ(2) O:O')bis-[chlorido-rhenium(III)](Re-Re)

Michael P Thomson et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

With an inversion center at the mid-point of the two Re(III) atoms, the title compound, [Re2Cl2{O2C(CH2)2CH3}4], exhibits a paddle-wheel or lantern-type structure with four n-butyrate groups bridging two Re(III) atoms in a syn-syn fashion. The axial chloride ligands together with the Re-Re quadruple bond [2.2330 (3) Å] complete an essentially octa-hedral geometry around each Re(III) atom. There is little distortion, with an Re-Re-Cl bond angle of 176.18 (3)° and typical cis-O-Re-O bond angles ranging from 89.39 (11) to 90.68 (11)°. There are two mol-ecules in the unit cell, and no significant inter-molecular inter-actions were noticed between mol-ecules in the crystal.

Keywords: butyrate bridging ligand; crystal structure; dirhenium core.

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Figures

Fig. 1.
Fig. 1.
The molecular structure of the title compound with displacement ellipsoids drawn at the 50% probability level. Hydrogen atoms are drawn as small spheres of arbitrary radius. [Symmetry code i) -x + 2, -y + 1, -z + 2.]
Fig. 2.
Fig. 2.
The packing diagram for the title compound viewed along [100].
See this image and copyright information in PMC

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