The crystal structure and mechanism of the title molecule are discribed. Thiscrystal is orthorhombic, belonging to space group PC21/B with α=1. 002 1 (2) nm, b=1. 483 0(3) nm, c=2. 173 6(4) nm, V=3. 230 39(2) nm3, Z=...The crystal structure and mechanism of the title molecule are discribed. Thiscrystal is orthorhombic, belonging to space group PC21/B with α=1. 002 1 (2) nm, b=1. 483 0(3) nm, c=2. 173 6(4) nm, V=3. 230 39(2) nm3, Z=2, Dc=1.80 g/cm3, R=0. 069 3. The structure was solved by direct method. The tin atom of the title compoundexists in two distorted-trigonal-bipyramidal geometry, defined by two carbon, one bromide,one chloride and one oxygen atoms leading to a five-membered chelate ring. In the structure,the five-membered ring containing the intermolecular O→Sn has a half chair conformation.展开更多
Four new complexes MaHb[X (NbO2 )W11O39]. nH2O (M = Me4N+, Bu4N+; X=Ga, Ge ) were synthesized and characterized by elementary analysis, IR, UV-Vis,183W NMR and electrochemical method. 183W NMR spectra of the complexes...Four new complexes MaHb[X (NbO2 )W11O39]. nH2O (M = Me4N+, Bu4N+; X=Ga, Ge ) were synthesized and characterized by elementary analysis, IR, UV-Vis,183W NMR and electrochemical method. 183W NMR spectra of the complexes consist of sixpeaks, as expected for monosubstituted Keggin-type.展开更多
文摘The crystal structure and mechanism of the title molecule are discribed. Thiscrystal is orthorhombic, belonging to space group PC21/B with α=1. 002 1 (2) nm, b=1. 483 0(3) nm, c=2. 173 6(4) nm, V=3. 230 39(2) nm3, Z=2, Dc=1.80 g/cm3, R=0. 069 3. The structure was solved by direct method. The tin atom of the title compoundexists in two distorted-trigonal-bipyramidal geometry, defined by two carbon, one bromide,one chloride and one oxygen atoms leading to a five-membered chelate ring. In the structure,the five-membered ring containing the intermolecular O→Sn has a half chair conformation.
文摘Four new complexes MaHb[X (NbO2 )W11O39]. nH2O (M = Me4N+, Bu4N+; X=Ga, Ge ) were synthesized and characterized by elementary analysis, IR, UV-Vis,183W NMR and electrochemical method. 183W NMR spectra of the complexes consist of sixpeaks, as expected for monosubstituted Keggin-type.
