Academic literature on the topic 'Derivatives of Antimony'

Interaction of tris(4-trifluoromethylphenyl)antimony (1) with copper(II) chloride and copper(II) bromide in acetone has been used to synthesize tris(4-trifluoromethylphenyl)antimony dichloride (2) and dibromide (3), yielding 85 % and 92 %, respectively. Oxidation of 1 by tert-butyl hydroperoxide in the presence of 2,5-difluorobenzoic acid (mole ratio 1:1:2) in ether is accompanied by the formation of tris(4-trifluoromethylphenyl)antimony bis(2,5-difluorobenzoate) (4), yielding 81%. Compounds 1–4 have been identified by IR spectroscopy and X-ray diffraction analysis. According to the X-ray analysis data, obtained on an automatic D8 Quest Bruker diffractometer (Mo K-radiation, λ = 0.71073 Å, graphite monochromator) at 293 K, for crystals 1 [C21H12F9Sb, M 557.06, symmetry group Р–1; cell parameters: a = 10.858(13) Å, b =11.072(13) Å, c = 11.432(18) Å, α = 104.91(7) degrees, β = 113.61(5) degrees, γ = 106.89(5) degrees; V = 1090(3) Å3; the crystal size is 0.34  0.33  0.3 mm; intervals of reflection indexes are 14  h  14, 15  k  15, 15  l  15; total reflections 40268; independent reflections 5862; Rint 0,0477; GOOF 1.049; R1 = 0.0533, wR2 = 0.1427; residual electron density 1.16/1.04 e/Å3], 2 [C21H12F9Cl2Sb, M 627.98, symmetry group Р–1; cell parameters: a = 7.920(4) Å, b = 14.732(7) Å, c = 21.759(13) Å, α = 75.31(2) degrees, β = 86.12(3) degrees, γ = 76.10(2) degrees; V = 2384(2) Å3; the crystal size is 0.650.150.11 mm; intervals of reflection indexes are 11  h  11, 21  k  22, 32  l  32; total reflections 138621; independent reflections 12076; Rint 0.0553; GOOF 1.109; R1 = 0.0429, wR2 = 0.0960; residual electron density 1.28/1.06 e/Å3], 3 [C27H18Br2F9Sb, M 794.98, symmetry group Р–1; cell parameters: a = 9.129(8) Å, b = 12.120(8) Å, c = 14.454(14) Å, α = 76.41(3) degrees, β = 85.93(5) degrees, γ = 68.69(3) degrees; V = 1448(2) Å3; the crystal size is 0.490.490.31 mm; intervals of reflection indexes are 12  h  12, 16  k  16, 19  l  19; total reflections 64492; independent reflections 7337; Rint 0.0545; GOOF 1.014; R1 = 0.0366, wR2 = 0.0817; residual electron density 0.68/0.61 e/Å3], and 4 [C35H18F13O4Sb, M 871.27, symmetry group Р–1; cell parameters: a = 11.575(14) Å, b = 12.017(17) Å, c = 15.041(16) Å, α = 76.33(5) degrees,β = 69.62(5) degrees, γ = 64.04(6) degrees; V = 1755(4) Å3; the crystal size is 0.31  0.12  0.11 mm; intervals of reflection indexes are 15  h  14, 15  k  15, 19  l  19; total reflections 44416; independent reflections 8033; Rint 0.0393; GOOF 1.072; R1 = 0.0326,wR2 = 0.0798; residual electron density 1,03/0,57 e/Å3], the antimony atoms in 1 have a trigonal pyramidal coordination, in 24 they have a trigonal bipyramidal coordination with electronegative ligands in axial positions. The Sb–C bond lengths in 1 are 2.155(5), 2.164(6), and 2.170(5) Å, the CSbC bond angles are 95.04(18), 95.70(17), and 97.20(18) degrees, which is less than the value of the tetrahedral angle; this is explained by the presence of a lone electron pair on the antimony atom. The C–F bond lengths vary in the range of 1.143(12)–1.334(11) Å. Crystals 2 consist of two types of crystallographically independent molecules, the geometrical parameters of which differ slightly from each other. Compound 3 is (4-CF3C6H4)3SbBr2 ∙ PhH solvate. In crystal 4, antimony atoms are coordinated by the oxygen atoms of bidentate carboxylate ligands (the Sb–O and Sb∙∙∙O=C distances are 2.120(3), 2.144(3), and 2.829(5), 2.911(6) Å, respectively).

Diphenyl antimony(III) and triphenylantimony(V) derivatives of Schiff bases having general formulae Ph2Sb[OC(R)CHC(R′)NC6H5] and Ph3Sb[OC(R)CHC(R′)NC6H5]2 (where R=R′=CH3,C6H5; R = CH3, R′=C6H5), respectively have been prepared. Trivalent organoantimony derivatives have been synthesized by the reaction of RC(O)CHC(R′)-NH(C6H5) with Ph3Sb in 1: 1 molar ratio whereas, pentavalent organoantimony derivatives have been synthesized by the reaction of Ph3SbBr2 with Na[OC(R)CHC(R′)N(C6H5)] in 1:2 molar ratio, respectively in benzene solution. The structures of these complexes have been assigned on the basis of chemical analysis, molecular weight measurements and spectral (IR 1H & 13C NMR) studies. Schiff base (R = CH3, R′ = C6H5 ) and its corresponding organoantimony(III) and antimony(V) compounds were used for evaluation of reproductive physiological activity in male rats and for studying antifertility activity. Compounds were administrated orally for 30 days to male albino rats and after termination of treatment, animal tissue and serum were taken for histopathological, biochemical and hematological parameters