Four new five-coordinated anionic tin(Ⅳ) complexes with a form of [R_ n NH_ 4- n ][PhSn( μ 2-SCH_2COO)_2] were synthesized via the reaction of mercaptoacetic acid with phenyltin trichloride in the presence of dif...Four new five-coordinated anionic tin(Ⅳ) complexes with a form of [R_ n NH_ 4- n ][PhSn( μ 2-SCH_2COO)_2] were synthesized via the reaction of mercaptoacetic acid with phenyltin trichloride in the presence of different organic bases and characterized by means of IR, 1H NMR and MS spectroscopies. The crystal structure of [( i -Pr)_2NH_2] [PhSn( μ 2-SCH_2COO)_2] was determined by X-ray diffraction. In the crystal structure,the tin atom is five-coordinated and exists in trigonal bipyramid geometry with cell parameters a =1.1766(11) nm, b =1.3144(14) nm, c =1.3336(15) nm,β =90° and Z =4.展开更多
（MeCp）;ZrCl(&-C;H;COO)has five-coordinate bentzirconocene in which the-naphthoyloxyis a bidentate ligand(Zr-O 2.317（2）,2.260（2）(?);Zr-Cl 2.521（1）;Zr-C 2.480-2.550;Zr-cent-CH;C;H;2.217,2.23OA;Cl-Zr-O1 134.8...（MeCp）;ZrCl(&-C;H;COO)has five-coordinate bentzirconocene in which the-naphthoyloxyis a bidentate ligand(Zr-O 2.317（2）,2.260（2）(?);Zr-Cl 2.521（1）;Zr-C 2.480-2.550;Zr-cent-CH;C;H;2.217,2.23OA;Cl-Zr-O1 134.8（1）;;Cl-Zr-O2 78.6（1）;;O1-Zr-O2 56.3（1）;).展开更多
Cp;ZrCl（S;CNBz;） is a five-coordinate bent zirconocene in which the dibenzyldithiocarbamate is a bidentate ligand (Zr-Cl 2.549（1）A; Zr-C 2.489-2.533; Zr-S 2.667（1）, 2.734（1）; Zr-Cl-S1 137.6（1）;; Zr-Cl-S2 73....Cp;ZrCl（S;CNBz;） is a five-coordinate bent zirconocene in which the dibenzyldithiocarbamate is a bidentate ligand (Zr-Cl 2.549（1）A; Zr-C 2.489-2.533; Zr-S 2.667（1）, 2.734（1）; Zr-Cl-S1 137.6（1）;; Zr-Cl-S2 73.3（1）;).展开更多
The five-coordinate bicycloazastannoxides (l-6) in the presence of Et3N has been investigated by 1H NMR spectrograph. It has been found that the deuterium exchange of αCH of five-coordinate bicycloazastannoxides with...The five-coordinate bicycloazastannoxides (l-6) in the presence of Et3N has been investigated by 1H NMR spectrograph. It has been found that the deuterium exchange of αCH of five-coordinate bicycloazastannoxides with CD3OD takes place, which is catalyzed by Et3N. In the presence of Et3N (2 μL) , the apparent rate constants (κobs) forthe deuterium exchange in CD3OD is determined by H NMR method, and the value of κobs is in the range of (2.05-10.8)×10-4s-1.The effect of the substitutes on the rates and the kinetic mechanism are discussed.展开更多
文摘Four new five-coordinated anionic tin(Ⅳ) complexes with a form of [R_ n NH_ 4- n ][PhSn( μ 2-SCH_2COO)_2] were synthesized via the reaction of mercaptoacetic acid with phenyltin trichloride in the presence of different organic bases and characterized by means of IR, 1H NMR and MS spectroscopies. The crystal structure of [( i -Pr)_2NH_2] [PhSn( μ 2-SCH_2COO)_2] was determined by X-ray diffraction. In the crystal structure,the tin atom is five-coordinated and exists in trigonal bipyramid geometry with cell parameters a =1.1766(11) nm, b =1.3144(14) nm, c =1.3336(15) nm,β =90° and Z =4.
文摘（MeCp）;ZrCl(&-C;H;COO)has five-coordinate bentzirconocene in which the-naphthoyloxyis a bidentate ligand(Zr-O 2.317（2）,2.260（2）(?);Zr-Cl 2.521（1）;Zr-C 2.480-2.550;Zr-cent-CH;C;H;2.217,2.23OA;Cl-Zr-O1 134.8（1）;;Cl-Zr-O2 78.6（1）;;O1-Zr-O2 56.3（1）;).
文摘Cp;ZrCl（S;CNBz;） is a five-coordinate bent zirconocene in which the dibenzyldithiocarbamate is a bidentate ligand (Zr-Cl 2.549（1）A; Zr-C 2.489-2.533; Zr-S 2.667（1）, 2.734（1）; Zr-Cl-S1 137.6（1）;; Zr-Cl-S2 73.3（1）;).
文摘The five-coordinate bicycloazastannoxides (l-6) in the presence of Et3N has been investigated by 1H NMR spectrograph. It has been found that the deuterium exchange of αCH of five-coordinate bicycloazastannoxides with CD3OD takes place, which is catalyzed by Et3N. In the presence of Et3N (2 μL) , the apparent rate constants (κobs) forthe deuterium exchange in CD3OD is determined by H NMR method, and the value of κobs is in the range of (2.05-10.8)×10-4s-1.The effect of the substitutes on the rates and the kinetic mechanism are discussed.
