Facile One-Pot Synthesis of Triphenylbismuth(V) Bis(carboxylate) Complexes

Abstract

Triphenylbismuth(V) bis(carboxylates), Ph 3 Bi(O 2 CR) 2 (R = 5-Br-2-OH-C 6 H 3-(1), 2-OH-C 6 H 4-(2), 2,6-(OH) 2-C 6 H 3-(3); 3-Me-2-NH 2-C 6 H 3-(4); Ph-(5) and Me-(6)) were obtained from the reaction of triphenylbismuth with hydrogen peroxide and excess carboxylic acid in wet 2-propanol. The synthesis avoids the use of halogens as oxidants and the products crystallize directly from the solution as pure compounds. They crystallize from solution without further need of purification. The structures of 1-5 were confirmed by single crystal X-ray diffraction. Compounds 2 and 5 exhibit a different polymorph than that previously reported in the literature. While all of the Bi(V) compounds adopt a trans-axial trigonal-bipyramidal configuration with the carboxylates in the axial positions, there is considerable variation in the coordination of the carboxylate that ranges from simple monohapto to the mixture of monoand bidentate chelating bonding modes.

Synthesis and structure of triphenylbismuth bis(3-phenylprop-2-enoate)

“…The valence of bismuth is five. However, according to the IR spectroscopic data and taking into account the results published in [18], the oxygen atoms O2 and O2* form bonds with the bismuth atom. Therefore, the coordination number of the bismuth atom is seven and the coordination polyhedron can be described as a distorted pentagonal bipyramid.…”

“…The distance between the asymmetric and symmetric absorption bands is Δν = 1538 − 1369 = 169 cm -1 ; i.e., it is smaller than 200 cm -1 . According to [18], this fact is indicative of the bidentate binding of the acid moiety to the metal atom.…”

Rеaction of Triphenylbismuth with Salicyl Acid and Tert-Butylhydroperoxide

“…Такое соотношение, определенное по спектру продукта до очистки перекристаллизацией, составило 2/25, что выше теории. [11], для трифенилвисмута 3046 см -1 [13]. Сигнал в области 3448 см -1 отнесён нами к валентным колебаниям фенольной ОН группы, что превышает значение 3240 см -1 в свободной салициловой кислоте [13].…”

“…Сигнал в области 3448 см -1 отнесён нами к валентным колебаниям фенольной ОН группы, что превышает значение 3240 см -1 в свободной салициловой кислоте [13]. [11]. ** Литературные данные [13].…”

Synthesis, crystal structures, DNA interaction and anticancer activity of organobismuth(V) complexes

“…The chemistry of organobismuth compounds is continuing to develop and many classes have been reported including bismuth(III) containing heterocylces (bismacycles and heterobismacycles) and triphenylbismuth(V) bis(carboxylate) complexes for instance [21][22][23]. But only a small amount of literatures reported organobismuth(V) complexes and their anticancer activities.…”