Bis(4-aminobenzoato-κO)triphenylantimony(V)

The structure of the title compound, [Sb(C6H5)3(C7H6NO2)2], contains two independent molecules of similar configuration. The Sb atoms exhibit a distorted trigonal–bipyramidal geometry with the O atoms of two carboxylate groups in the axial positions and the C atoms of the phenyl groups in the equatorial positions. In the crystal structure, molecules are connected by intermolecular N—H⋯O and N—H⋯N hydrogen-bonding interactions forming a chain structure along [100].

The structure of the title compound, [Sb(C 6 H 5 ) 3 (C 7 H 6 NO 2 ) 2 ], contains two independent molecules of similar configuration. The Sb atoms exhibit a distorted trigonal-bipyramidal geometry with the O atoms of two carboxylate groups in the axial positions and the C atoms of the phenyl groups in the equatorial positions. In the crystal structure, molecules are connected by intermolecular N-HÁ Á ÁO and N-HÁ Á ÁN hydrogen-bonding interactions forming a chain structure along [100].

Related literature
For related structures, see: Wang et al. (2005).
We acknowledge the National Natural Science Foundation of China (grant No. 20771053)

S3. Refinement
The C-H and N-H hydrogen atoms were positioned with idealized geometry and were refined isotropic with U iso (H) = 1.2 U eq (C, O) for all H atoms using a riding model with N-H = 0.86 Å and C-H = 0.93 Å. supporting information sup-2 . E64, m1426

Figure 1
The molecular structure of the compound, showing 50% probability displacement ellipsoids. H atoms have been omitted for clarity.