| 211925-04-1

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• CAS: 211925-04-1
• 化学式: C₁₁H₁₀BLi
• 分子量: 159.952
• InChiKey: ZCQANYTXUJIAHG-UHFFFAOYSA-N

反应信息

• 作为反应物：
  描述：

  pentamethylcyclopentadienylzirconium(IV) trichloride 、 以 乙醚 为溶剂， 以85%的产率得到(C5H5BPh)(η5-C5Me5)ZrCl2
  参考文献：
  名称：

  9-Phenyl-9-borataanthracene 的锆配合物。合成、结构表征和反应性

  摘要：

  9-苯基-9-硼酸锂 (3·Li(THF)x, x = 2 或 3) 是由 9-苯基-9,10-二氢-9-硼酸锂 (6) 与 LiTMP (TMP) 脱质子化得到的= 2,2,6,6-四甲基哌啶）在 THF 中。6 和 3·Li(TMEDA)（TMEDA = N,N,N',N'-四甲基乙二胺）的晶体学确定结构的比较突出了电荷和离域对杂环骨架的影响。3·Li(THF)2 与 Cp*ZrCl3 (Cp* = C5Me5) 和 Cp*ZrMe2Cl 反应得到新型配合物 (AnB-Ph)Cp*ZrCl2 (4) (AnB-Ph = 9-phenyl-9-硼烷蒽) 和 (AnB-Ph)Cp*ZrMe2 (5)，分别。4 的晶体学确定的分子结构类似于弯曲的茂金属，配体在锆周围呈四面体排列。硼烷蒽配体显着弯曲（约 16°）以避免与 Cp*ZrCl2 核的空间接触。对于 6, 3·Li(TMEDA)，环外苯基取代基相对于蒽单元的角度在

  DOI：

  10.1021/ja972651+

文献信息

• Tantalum Borollide Trichloride:  A Versatile Entry into Tantalum Borollide Complexes
  作者：Caroline K. Sperry、W. Donald Cotter、Rip A. Lee、Rene J. Lachicotte、Guillermo C. Bazan

  DOI：10.1021/ja9741887

  日期：1998.8.1

  [C4H4B-NH(CHMe2)2]Ta(NAr)Cl2 (4). When 2 equiv of acetone are added to 1, the result is [C4H4B-NH(CHMe2)2]TaCl3[Me2C(O)CH2C(O)Me] (5). Reaction with LiCp* (Cp* = C5Me5) gives Cp*[C4H4B-N(CHMe2)2]TaCl2 (6). Reduction of 6 with Mg under an atmosphere of CO produces Cp*[C4H4B-N(CHMe2)2]Ta(CO)2 (7) which can be protonated with [H(OEt2)2][B(C6H3(CF3)2)4] to form Cp*[C4H4B-NH(CHMe2)2]Ta(CO)2}[B(C6H3(CF3)2)4]} (8)

  Li2[ -N(CHMe2)2]·THF 与 2 当量 AlCl3 和 1 当量 TaCl5 反应生成单核 [ -N(CHMe2)2]TaCl3 (1)，产率为 47%。1 与 3 当量的 MeMgCl 烷基化产生甲基化物质以及三重复合物 [ -N(CHMe2)2]Me2Ta[μ-C4H4B-N(CHMe2)2]TaMe4 (2)。用 LiCH(SiMe3)2 单烷基化可能得到 [ -N(CHMe2)2]TaCl2[CH(SiMe3)2] (3)，其中包含 Ta-Cα-H 强相互作用。将 H2NAr (Ar = 2,6-iPr2-C6H3) 和三乙胺添加到 1 中得到 [ -NH(CHMe2)2]Ta(NAr)Cl2 (4)。当 2 当量的丙酮加到 1 中时，结果是 [ -NH(CHMe2)2]TaCl3[Me2C(O)CH2C(O)Me] (5)。与
• Synthesis, characterization and C–H activation reactivity of bis(ethylene) boratabenzene rhodium complexes
  作者：David H. Woodmansee、Xianhui Bu、Guillermo C. Bazan

  DOI：10.1039/b009246k

  日期：——

  Reaction of Li[C5H5B–Ph] with [RhCl(C2H4)2]2 gives [C5H5B–Ph]Rh(C2H4)2 1 in 91% yield; similarly, Li[C5H5B–NMe2] with [RhCl(C2H4)2]2 gives [C5H5B–NMe2]Rh(C2H4 )2 2 in 85% yield; single crystal X-ray analysis studies of 1 and 2 show a molecular geometry analogous to those of the Cp and Cp* complexes; the use of 1 and 2 in promoting alkane boration was evaluated against the activity of Cp*Rh(C2H4)2 3; the boratabenzene complexes 1 and 2 show faster initiation, but yield less thermally stable catalysts than 3.

  Li[C5H5BâPh] 与 [RhCl(C2H4)2]2 反应得到 [C5H5BâPh]Rh( )2 1，收率为 91%；同样，Li[C5H5BâNMe2] 与 [RhCl( )2]2 反应得到 [C5H5BâNMe2]Rh( )2 2，收率为 85%；1 和 2 的单晶 X 射线分析研究显示，其分子几何形状与 Cp 和 Cp* 复合物类似；根据 Cp*Rh( )2 3 的活性，评估了 1 和 2 在促进烷烃溴化方面的用途；硼苯络合物 1 和 2 的引发速度更快，但生成的催化剂的热稳定性不如 3。
• Electron-Donating Properties of Boratabenzene Ligands
  作者：Guillermo C. Bazan、W. Donald Cotter、Zachary J. A. Komon、Rip A. Lee、Rene J. Lachicotte

  DOI：10.1021/ja992413+

  日期：2000.2.1

  The reaction of (C5H5B-R)Cp*ZrMe2 (Cp* = eta(5)-C5Me5; R = NMe2 (4), OEt (5), Ph (6)) with B(C6F5)(3) affords zwitterionic complexes of the type [(C5H5B-R)Cp*ZrMe] [MeB(C6F5)(3)] (R = NMe2 (7), OEt (8), Ph (9)). The molecular structures of 7 and 9 were determined by single-crystal X-ray diffraction studies, and they were found to be similar to those observed for standard group 4 metallocenes. The boratabenzene ligand in 7 more closely resembles an eta(5)-pentadienyl fragment than in 9, where it is eta(6)-bound. Variable-temperature H-1 NMR spectroscopy shows that ion-pair dissociation/recombination processes occur in solution. Data over large temperature ranges were obtained by the combination of line shape and spin saturation transfer techniques (100 degrees C for 4 and 5, 65 degrees C for 4). The rates of these processes give insight into how the orbital overlap between boron and the exocyclic group affects the rates of elementary reactions at the metal. The Delta H-double dagger values for ion-pair dissociation/recombination were found to increase with decreasing donor strength of the substituent: 12.2(2), 12.6(1), and 17.6(3) kcal/mol for 7, 8, and 9, respectively. Exchange reactions between 9 and 4 reveal that 7 is formed exclusively, indicating that the aminoboratabenzene ligand can better accommodate the increased positive charge on the metal center. The dependence of the carbonyl stretching frequency on the extent of metal back-bonding in complexes of the type (C5H5B-R)Cp*Zr(CO)(2) (R = NMe2 (10), OEt (11), Me (12), Ph (13)) and (C5H5B-R)(2)Zr(CO)(2) (R = NMe2 (14), OEt (15), Me (16), Ph (17)) can also be used to gauge the electron density at Zr. Complexes 10-17 were prepared by reductive carbonylation of the corresponding dichlorides. The measured reduction potentials of the dichlorides, (C5H5B-R)(2)ZrCl2, show that it is progressively more difficult to reduce the metal center as the donor strength of the boratabenzene ligand increases. The dynamic NMR, IR, and electrochemical data are consistent with the notion that the donor properties in [C5H5B-R] ligands decrease in the order R = NMe2 > OEt approximate to Me > Ph.