Edge-shared [M2Cl10]2− complexes of reaction between oxophilic group 4 metal and phosphorus ylides
摘要:
The reactions between oxophilic group 4 metal chlorides, alpha-keto ylides in THF, led to the formation of titanium, zirconium and hafnium edge-shared [M2Cl10](2-) complexes (1a-3f). We describe that the reaction between MCl4 (M = Ti, Zr and Hf) with phosphorus ylides produce edge-shared [M2X10](2-) complexes instead of O-coordination previously reported complexes. Adding dimethyl sulfoxide (DMSO) to these complexes in room temperature crystalline solid [M(DMSO)(8)] center dot 4Cl center dot mH(2)O center dot DMSO] (M = Ti (1g), Zr (2g) and Hf (3g); m = 0-3) together with phosphonium salts in mother liquid were formed. The compounds were characterized by elemental analysis, IR and H-1, C-13 and P-31 NMR spectroscopy.
single crystal X-ray analyses of binuclear complexes of [(Y′) · HgI2]2 and [(Y″) · HgI2]2 and mononuclear complex of [(Y″) · HgI2 · DMSO]. Characterization of the obtained compounds was also performed by elemental analysis, IR, 1H, 31P, and 13C NMR. Theoretical studies on Hg(II) complexes of Y′ show that the cis-like isomers are about 4–12 kcal/mol less stable than the trans-like structures and the relative
磷酰化物Ph 3 PCHC(O)C 6 H 4 NO 2(Y')和(对甲苯基)3 PCHC(O)C 6 H 4 Cl(Y'')与HgX 2(X = Cl,Br和I)使用甲醇作为溶剂以等摩尔比产生双核产物。DMSO对双核络合物[(Y“)·HgI 2 ] 2的桥拆分反应产生了单核络合物[(Y'')·HgI 2 ·DMSO]。该桥拆分反应也可以是合成单核产物的方法。单晶X射线分析[(Y')·HgI 2 ] 2和[(Y“)·HgI 2 ] 2的双核络合物以及[[ (Y″)·HgI 2 ·DMSO]。还通过元素分析,IR,1 H,31 P和13进行了表征的化合物1 H NMR。对Y'的Hg(II)配合物的理论研究表明,顺式异构体的稳定性比反式结构低约4–12 kcal / mol,并且顺式和反式异构体的相对能量明显取决于桥接卤化物的大小。这些对Y″的汞配合物的研究表明,在DMSO溶液中以DMSO作
Synthesis and characterization of new nitrate-bridged polymeric complexes of mercury(II) with phosphorus ylides
Reaction of phosphorus ylides of the type X-C6H4- COCH = PAr3 (X = Cl and NO2; Ar = phenyl and p-tolyl) with Hg(NO3)(2) center dot H2O in equimolar ratios using methanol as solvent are reported. X-ray crystal structure analysis of [Hg(ClC6H4C(O)CHPPh3)(NO3)(mu-NO3)](n) center dot (DMSO)(n) shows that the 1:1 complex adopts the noncentrosymmetric polymeric structure in the solid state with NO3- anion bridges. Variation of temperature or concentration in a P-31 NMR study indicates that the disappearance of satellites, due to coupling to 199 Hg, occurs at increasing temperature or decreasing concentration. (C) 2007 Elsevier B.V. All rights reserved.
Edge-shared [M2Cl10]2− complexes of reaction between oxophilic group 4 metal and phosphorus ylides
作者:S. J. Sabounchei、M. Ahmadi、P. Shahriari、F. Hoseini-Fashami、S. Samiee
DOI:10.1134/s0036023612070170
日期:2012.7
The reactions between oxophilic group 4 metal chlorides, alpha-keto ylides in THF, led to the formation of titanium, zirconium and hafnium edge-shared [M2Cl10](2-) complexes (1a-3f). We describe that the reaction between MCl4 (M = Ti, Zr and Hf) with phosphorus ylides produce edge-shared [M2X10](2-) complexes instead of O-coordination previously reported complexes. Adding dimethyl sulfoxide (DMSO) to these complexes in room temperature crystalline solid [M(DMSO)(8)] center dot 4Cl center dot mH(2)O center dot DMSO] (M = Ti (1g), Zr (2g) and Hf (3g); m = 0-3) together with phosphonium salts in mother liquid were formed. The compounds were characterized by elemental analysis, IR and H-1, C-13 and P-31 NMR spectroscopy.
Synthesis and NMR Study of α-Keto Stabilized Ylides of the Type RCOCH=PAr<sub>3</sub>, (R=MeO-C<sub>6</sub>H<sub>4</sub>, Cl-C<sub>6</sub>H<sub>4</sub>, NO<sub>2</sub>-C<sub>6</sub>H<sub>4</sub>, α-Thiophenyl and Naphthyl; Ar = p-Tolyl or Phenyl)
Synthesis and characterization of five newphosphoniumsalts and related phosphorus ylides of the type R-COCH=PAr 3 are reported. The reaction of bromo 4'-methoxo/chloro/nitro acetophenone, α-thiophenyl and naphthoyl acetophenone with triphenylphosphine or triparatolylphosphine in acetone gives phosphoniumsalts. Dehydrogenation of these salts in aqueous sodium hydroxide solution form ylides. Characterization