| STUDIES ON ORGANOMETALLIC COMPOUNDS OF TITANIUM,ZIRCONIUM AND HAFNIUM——THE CRYSTAL AND MOLECULAR STRUCTURES OF OXO-BRIDGED TETRAKIS(CYCLOPENTADIENYL)BIS (o.TOLYL)AND TETRAKIS(METYLCYCLOPEN-TADIENYL) BIS(p-TOLYL)BINUCLEATED ZIRCONIUM COMPOUNDS |
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| 引用本文： | 王祖陶,陈寿山,姚心侃,董贻诚,吴伸,张季平,韦安之,张荣光.STUDIES ON ORGANOMETALLIC COMPOUNDS OF TITANIUM,ZIRCONIUM AND HAFNIUM——THE CRYSTAL AND MOLECULAR STRUCTURES OF OXO-BRIDGED TETRAKIS(CYCLOPENTADIENYL)BIS (o.TOLYL)AND TETRAKIS(METYLCYCLOPEN-TADIENYL) BIS(p-TOLYL)BINUCLEATED ZIRCONIUM COMPOUNDS[J].中国科学B辑(英文版),1982(11). |
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| 作者姓名： | 王祖陶 陈寿山 姚心侃 董贻诚 吴伸 张季平 韦安之 张荣光 |
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| 作者单位： | Department of Chemistry，Institute of Elemento-organic Chemistry，Nankai University，Tianjin，Department of Chemistry，Institute of Elemento-organic Chemistry，Nankai University，Tianjin，Department of Chemistry，Institute of Elemento-organic Chemistry，Nankai University，Tianjin，Institute of Biophysics，Academia Sinica，Beijing)，Institute of Biophysics，Academia Sinica，Beijing)，Institute of Biophysics，Academia Sinica，Beijing)，University of Science and Technology of China，Hefei，Shanghai Institute of Biochemistry，Academia Sinica |
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| 摘 要： | This paper reports the crystal and molecular structures of tetrakis (cyclopentadienyl) bis(o-tolyl)-μ-oxo-dizirconium dimer (Ⅰ)] and tetrakis (methylcyclopentadienyl) bis (p-tolyl)-μ-oxo-dizirconium dimer (II)]. Both of them belong to monoclinic system and possess the same spacegroup C_2~5h- 2_1/a. The cell dimer (Ⅰ) containing four molecules is defined by a=19.122A,b=16.319A, c = 9.296A, β= 92°1′; the cell dimer (Ⅱ) containing two molecules is defined bya = 20.076A, b = 8.205A, c = 10.016A, β= 104°41′. The important difference of molecular configurations between the two dimers lies in thatthe dimer (Ⅰ) has no symmetry center and its Zn-O-Zr oxo-bridge presents a slightly bentconfiguration while the dimer (Ⅱ) takes the oxgen atom as a symmetry center and its oxo-bridge present linear linkage. In accordance with the above-mentioned molecular configuration, steric effect and elec-tronic structure have been further discussed.
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