Group 15 Metal Complexes With Carboxylic Acids. Preparation and Crystal Structure of Polymeric Ammonium Aquabis[(+)-tartrato(2-)]bismuthate(III) Hydrate

Abstract

The crystal structure of the bismuth(111) complex with (+)-tartaric acid, ammonium aquabis[(+)tartrato(2-)]bismuthate(111) hydrate, has been determined by X-ray methods and refined to a residual R 0.020 for 1288 observed reflections. Crystals are orthorhombic, space group P 212121 with Z 4 in a cell of dimensions a 7.4712 (4), b 10.856(1), c 17.609(3) A. Each nine-coordinate MOQ bismuth centre comprises three bidentate a-hydroxy carboxy residues from two tartrato(2-) ligands (with one bridging), an asymmetric bidentate carboxylato(0,O ') group, and a water. The Bi-0 range is 2.372(7)-2.738(6) .k [mean 2.509(6) A]. The resultant structure is a linear polymer which is stabilized by extensive hydrogen-bonding interactions. Mlcks, R. H., (Ed.) 'Essentials of Materia Medica Pharmacology and Therapeutics' 4th Edn (

A Comprehensive Potentiometric Study of the Tartrate Complexes of Trivalent Arsenic, Antimony, and Bismuth in Aqueous Solution

“…Two alternative species, namely, [SbTar] + and [SbTar 2 ] − , were proposed by Wojtaś along with corresponding formation constants, based on polarographic studies. As pointed out by Filella and May, the cationic species is unlikely from the point of view of the known solution chemistry of antimony, as is the anionic species because (i) it is now well understood from XRD and solution phase NMR that in the 2:2 dimeric anion, the hydroxyl oxygens participate in the coordination of Sb­(III), (ii) complexation of Sb­(III) by vicinal diols or diphenols is a known phenomenon with other ligands, ,, (iii) it also appears much sounder from a steric point of view than Wojtaś’s proposed structure that seems to involve seven-membered chelate rings, and (iv) and most importantly, Wojtaś’s complexes are irreconcilable with our potentiometric data and fail to explain the titration curve in the acid domain, in the very region where the dinuclear anion predominates.…”

“…Nevertheless, substantially the same equilibrium constants were obtained in perchlorate medium (absence of NTA 3– ) as in nitrate medium (in the presence of NTA 3– ), which demonstrates that mixed nitrilotriacetate and tartrate complexes of bismuth were not formed. Sagatys et al prepared a complex ammonium bismuth tartrate of the bulk composition NH 4 [Bi­(H 2 O)­Tar 2 ]·H 2 O with a Bi 3+ in a 9-fold coordination environment. Our solution phase speciation model was, however, not significantly improved by the simple addition of or by the replacement (of an existing species) by the [BiTar 2 ] − anion.…”

“…Nevertheless, substantially the same equilibrium constants were obtained in perchlorate medium (absence of NTA 3− ) as in nitrate medium (in the presence of NTA 3− ), which demonstrates that mixed nitrilotriacetate and tartrate complexes of bismuth were not formed. Sagatys et al 43 It appears that in the acidic domain, up to pH ∼4, the uncharged mononuclear 1:1 complex is the dominant form, and this is replaced by the Bi analogue of the dinuclear "emetic" complex. It is remarkable that in the Bi(III) system, the mononuclear complex should predominate in the acid region and the dinuclear one in the basic region, while in the Sb(III) system, the opposite is true.…”

Easy Synthesis of High-Purity BiFeO3Nanoparticles: New Insights Derived from the Structural, Optical, and Magnetic Characterization

“…The anion of the L-(+)-tartaric acid and Bi 3+ form polymeric chains with a nine-coordinate bismuth center (BiO 9 ). 51,61 However, the tartrate anion does not have the same affinity for Bi 3+ and Fe 3+ . 51,62,63 Consequently, the two cations do not get homogeneously distributed in the polymeric chains in the precursor solutions.…”

Identification, Isolation, and Characterization of Cysteinate and Thiolactate Complexes of Bismuth

“…Extensive medicinal use of BSS and CBS has prompted the structural characterization of bismuth complexes involving conjugate bases of citric, − lactic, malic, tartaric, , and salicylic acids . Although the database for solid-state structural features of bismuth with biologically relevant functional groups is developing, there are no definitive conclusions regarding the potential sites for interaction of bismuth within biosystems.…”