Complexes of diorganotin(IV) dihalides with diphosphoryl compounds and their Mössbauer spectra

Synthesis of the new types of N‐substituted aminomethylenebisorganophosphorus acids and their derivatives

“…The numerous aminomethylenebisorganophosphorus compounds present a great interest as promising polydentate ligands and prospective biologically active compounds [1][2][3][4][5][6][7]. In the present work, we report the results of the interaction of the esters of trivalent organophosphorus acids with PH and POSiMe 3 fragments with various derivatives of formamide resulting in formation of the new types of N-substituted aminomethylenebisorganophosphorus acids and their derivatives in high yield.…”

“…The proposed scheme of this reaction involves the cleavage of the P C bond of the pivaloylphosphonite by ethanol, resulting in diethoxyphosphine, which undergoes further aminomethylation similarly to dibutoxyphosphine. (2) Also it was shown by us that the interaction of P(O)H acids with dimethylformamide dialkyl acetals proceeds as a two-step process. So diethyl phosphite and dipropyl phosphinoxide react with formamide acetals under heating at 110-130…”

Di-n-butyltin Methyl- and Phenylphosphonates

“…3,5 In contrast with tin carboxylates, a much less clear picture on the structural coordination chemistry of organotin phosphonates was developed over the years, despite recent reports on a rich organometallic and inorganic phosphonate chemistry for numerous metals, including tin(II) and tin(IV), which give rise to layered and/or microporous (open-framework) materials, [6][7][8][9][10][11][12][13][14][15] molecular cages, 8,16,17 or Langmuir-Blodgett films. Organotin derivatives that involve phosphates, [19][20][21][22][23][24] phosphinates, 20,23,[25][26][27][28][29][30][31] or phosphonates 20,21,23,27,[30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]…”

“…21,25 A variety of organotin compounds with nonbridging phosphorus oxo derivatives, mainly phosphonate diesters and phosphinate monoesters, have also been reported. [30][31][32][33]35,[42][43][44][46][47][48] ) 1, 2, 3 and X ) Cl or Br), where the coordination of tin is expanded to 5 or 6 by the oxygen atom of the Pd O groups. The use of bifunctional nonbridging phosphorus oxo derivatives (e.g., (EtO) 2 P(O)CH(Me)P(O)(OR) 2 ) 32 can lead to structures based on chains, 32,44 dimers, 42,43,47 or even monomers.…”

Artificial neural network approach to the evaluation of the coordination geometry in organotin(IV) compounds

“…In these compounds, tin(iv) exhibits a distorted trigonal bipyramidal coordination, while the coordinated dipeptides form a network of weak hydrogen bonds that determines the crystal packing of the complexes. 10 These two classes of diorganotin(iv) compounds, not related to each other, differ in geometry around a metal centre that is octahedral in the first class, and penta-coordinated in the second one. 119 Sn Mössbauer spectra can discriminate between the two geometries.…”