Synthesis, characterization and structural aspects of diorganotellurium(IV) compounds containing (TeS) bonds

Two novel diorganotin phosphonic diamides: syntheses, crystal structures, spectral properties and in vitro antibacterial studies

“…The downfield chemical shift in comparison to that of free ligands (Table 1) indicates a considerable drift of electron density from the phosphorus to the tin atom through the oxygen atom. [14] Noticeable chemical shift differences are observed for PhP(O)(NH t Bu) 2 (Table 1) in varying the solvent. This difference is also related to the poor hydrogen bonding of CDCl 3 with electronegative atoms compared with DMSO-d 6 .…”

Synthesis, spectroscopic characterization of O,O-alkylene dithiophosphates of tellurolane and 1-oxa-4-tellurane. Single crystal structures of C4H8Te[S2P(OCH2)2CMe-nPr]2 and C4H8OTe[S2P(OCH2)2CEt2]2

“…Several reports on organotellurium (IV) compounds with 1,1-dithioligands are known, including O-alkyl-dithiocarbonate [1][2][3], N,N-dialkyl-dithiocarbamates [4][5][6][7], O,O-dialkyl and alkylene dithiophosphates [8][9][10][11][12][13][14][15]. They exhibit a great structural diversity due mainly to the strong inclination to form supramolecular associations through inter-and intramolecular Te-donor atom interactions and to the apparently stereochemically active lone pair at the tellurium center.…”

Self-assembly of di- and triorganotin(IV) complexes: Syntheses, characterization and crystal structures of 1D polymeric chain containing O,O-diethyl or O,O-diisopropyl phosphoric acid ligands

“…The downfield chemical shift in comparison to that of free acid indicates a considerable drift of electron density from the phosphorus to the tin atoms through the oxygen atoms [9].…”

“…{[Me 2 ClSnO 2 P(OC 2 H 5 ) 2 ] 2 } n 5 Sn(1)-C (9) 2.104 (16) Sn (2)-C(11) 2.073 (14) Sn (1)-C(10) 2.126 (15) Sn (2)-C(12) 2.055 (15) Sn (1)-Cl (1) 2.351 (7) Sn (2)-Cl (2) 2.399 (7) Sn (1)-O(1) 2.200 (9) Sn (2) (4) 1.546(6) P(2)-O(8) 1.541(7) C(9)-Sn(1)-C (10) 144.2(7) C(12)-Sn(2)-C(11) 152.1(7) C(9)-Sn(1)-Cl (1) 110.8(5) C(11)-Sn(2)-Cl(2) 101.3(5) C(10)-Sn(1)-Cl (1) 104.7(5) C(12)-Sn(2)-Cl(2) 106.6(5) O(1)-Sn (1) (14) C(13)-Sn(1)-C (9) 142.7(9) C(21)-Sn(2)-C(17) 143.8(8) C(9)-Sn(1)-Cl (1) 108.1(6) C(17)-Sn(2)-Cl (2) 108.2(6) C(13)-Sn(1)-Cl (1) 109.0(6) C(21)-Sn(2)-Cl(2) 107.8(6) O(6)#1-Sn (1) Symmetry code for complex 5: #1 x + 1/2, Ày + 3/2, z. Symmetry code for complex 8: #1 x + 1, y, z. Fig.…”