Bis(but-2-enoato-κO)tri-phenyl-bis-muth(V).

In the title mol-ecule, [Bi(C6H5)3(C4H5O2)2], the Bi(V) atom is in a distorted trigonal-bipyramidal environment with carboxyl-ate O atoms in axial positions and phenyl C atoms in the equatorial plane. The Bi-O bond lengths are 2.283 (3) and 2.

Bis[(E)-3-(4-meth-oxy-phen-yl)prop-2-enoato]triphenyl-anti-mony(V) benzene monosolvate.

The asymmetric unit of the title compound, [Sb(C6H5)3(C10H9O3)2]·C6H6, contains one organometallic mol-ecule and one benzene mol-ecule that is disordered over two sets of sites with an occupancy ratio of 0.556 (15):0.444 (15).