2,2,8,8-tetramethyl-trans-bis(η1-trimethylstannyl)-2,8-disilatricyclo{7.3.0.0(3,7)}dodecatetraene | 138784-74-4

• 分子结构分类: 有机化合物 - 有机金属化合物 - 有机类金属化合物
• 英文名称: 2,2,8,8-tetramethyl-trans-bis(η1-trimethylstannyl)-2,8-disilatricyclo{7.3.0.0(3,7)}dodecatetraene
• CAS: 138784-74-4
• 化学式: 2C₃H₉Sn*C₁₄H₁₈Si₂
• 分子量: 570.097
• InChiKey: MGJJFEGCARFIDE-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  dilithium 4,4,8,8-tetramethyltetrahydro-4,8-disila-s-indacenediyl 、 三甲基氯化锡 以 四氢呋喃 、 正己烷 为溶剂， 以71%的产率得到2,2,8,8-tetramethyl-trans-bis(η1-trimethylstannyl)-2,8-disilatricyclo{7.3.0.0(3,7)}dodecatetraene
  参考文献：
  名称：

  双桥环戊二烯基配体的双核金属配合物

  摘要：

  Binuclear metal complexes derived from the doubly bridged cyclopentadiene system 2,2,8,8-tetramethyl-2,8-disilatricyclo[7.3.0.0(3,7)]dodeca-3,5,9,11-tetraene (LH2) are examined. This compound is deprotonated with 2 equiv of 1-butyllithium to form the dilithio salt LLi2 (2). Reaction of 2 with trimethyltin chloride yields (Me3Sn)2L (3). The analogous reaction with Cp*RuCl (Cp* = C5Me5) gives the binuclear ruthenocene (Cp*Ru)2L (4). By cocomplexation of 2 and Cp*Li with iron(II) chloride, the binuclear ferrocene (Cp*Fe)2L (5) is obtained. Reaction of LH2 with octacarbonyldicobalt leads to the formation of [(CO)2Co]2L (6). The analogous reaction with pentacarbonyliron yields a mixture of products, from which [(CO)2Fe]2L (Fe-Fe) (7) is isolated. The stereochemistry of complexes 3-7 is investigated by IR and NMR spectroscopy. Single-crystal X-ray structure determinations are performed for 5 and 6. The structure investigations on 5 show a trans arrangement of the two Cp*Fe units. The ligand L is not planar. The unit cell contains two independent molecules, whose bonding parameters are essentially identical (crystal system triclinic; space group P1BAR; a = 8.7443 (13), angstrom, b = 18.561 (3) angstrom, c = 20.576 (4) angstrom; alpha = 89.340 (13)-degrees, beta = 89.160 (13)-degrees, gamma = 78.300 (12)-degrees; Z = 4). The structure investigations on the cis isomer of 6 also show a nonplanar ligand L (crystal system monoclinic; space group P2(1)/n; a = 10.496 (2) angstrom, b = 13.380 (2) angstrom, c = 14.537 (6) angstrom; beta = 92.96 (3)-degrees; Z = 4). The flexibility of L is estimated, and the potential of its binuclear complexes for catalytic processes is discussed.

  DOI：

  10.1021/om00039a043