Li[(η5-C5H4Li)W(CO)3] | 1010398-65-8

• 英文名称: Li[(η5-C5H4Li)W(CO)3]
• 英文别名: Li[W(η5-C5H4Li)(CO)3]
• CAS: 1010398-65-8
• 化学式: C₈H₄LiO₃W*Li
• 分子量: 345.85
• InChiKey: PBPRUPJODYEVJG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  None
• 重原子数：
  None
• 可旋转键数：
  None
• 环数：
  None
• sp3杂化的碳原子比例：
  None
• 拓扑面积：
  None
• 氢给体数：
  None
• 氢受体数：
  None

反应信息

• 作为反应物：
  描述：

  Li[(η5-C5H4Li)W(CO)3] 、 三甲基氯化锡 以 乙醚 为溶剂， 以97%的产率得到[W(η5-C5H4SnMe3)(SnMe3)(CO)3]
  参考文献：
  名称：

  Half-Sandwich Tungsten Complexes with Metal- and η⁵-Cyclopentadienyl-Bound Functional Stannyl Groups and Their Transformation into Ansa Complexes

  摘要：

  We report the introduction of two stannyl groups into a half-sandwich tungsten complex and their subsequent functionalization in order to generate useful precursors for the formation of diverse ansa-type tungsten complexes. Bis-stannylation is achieved by treatment of the dilithiated species Li-[W(eta(5)-C5H4Li)(CO)(3)] (7) with 2 equiv of Me3SnCl, yielding [{Me3Sn(eta(5)-C5H4)}(OC)(3)W(SnMe3)] (8). Successive chlorination is achieved by use of Me2SnCl2 and SnCl4 center dot 2OEt(2) and enables the selective formation of [{Me3Sn(eta(5)-C5H4)}(OC)(3)W(SnMe2Cl)] (10), [{ClMe2Sn(eta(5)-C5H4)}(OC)(3)W(SnMe2Cl)] (11), and [{ClMe2Sn(eta(5)-C5H4)}(OC)W-3(SnMeCl2)} (12). The reaction of 11 with sodium amalgam gives a product mixture, consisting of the tristanna-bridged ansa complex [{eta(1)-SnMe2-SnMe2-SnMe2-(eta(5)-C5H4)}(CO)(3)W] (13) and the cyclic dinuclear tungsten compound [{Me2Sn-(eta(5)-C5H4}-(OC)(3)W](2) (14). Ring closure of 12 was achieved upon reaction with Na2S to yield [{eta(1)-Sn(Cl)Me-S-SnMe2-(eta(5)-C5H4)}(CO)(3)W] (15), which displays a chiral, tungsten-bound tin center. All new compounds have been fully characterized by elemental analyses and, in solution, by IR and multinuclear NMR spectroscopy. The crystal structures of complexes 8, 11, 12, 14, and 15 were presented and discussed, showing Sn-W bond lengths of 2.8481(5) (8), 2.7586(3) (11), 2.7256(3) (12), 2.8180(3) (14), and 2.7662(2) angstrom (15).

  DOI：

  10.1021/om100324m

文献信息

• Synthesis of a bimetallic platinum–tungsten complex with a bridging µ-diboranyl–oxycarbyne moiety
  作者：Holger Bera、Holger Braunschweig、Rainer Dörfler、Krzysztof Radacki

  DOI：10.1039/b714763e

  日期：——

  The novel bimetallic µ-diboranyl–oxycarbyne bridged platinum–tungsten complex [Wη1,µ-CO-B(NMe2)-B(NMe2)-(η5-C5H4)}(CO)2Pt(PPh3)2}] (W–Pt) (3) has been synthesised by a two-step reaction, starting from the dilithiated half-sandwich compound Li[W(η5-C5H4Li)(CO)3] (1) via the ansa-diboranyl–oxycarbyne tungsten complex [Wη1-CO-B(NMe2)B(NMe2)(η5-C5H4)}(OC)2] (2) by use of stoichiometric amounts of B2(NMe2)2Br2 and [Pt(η2-C2H4)(PPh3)2], respectively.

  新型双金属 µ-二硼烷基-氧炔桥铂-钨配合物 [Wη1, µ-CO-B(NMe2)-B(NMe2)-(η5-C5H4)}(CO)2Pt(PPh3)2}] (W-Pt) (3) 通过两步反应合成，第一步反应从二锂化半三明治化合物 Li[W(η5- Li)(CO)3] (1) 开始，第二步反应通过分别使用化学计量量的 B2(NMe2)2Br2 和 [Pt(η2-C2H4)(PPh3)2] 合成 ansa-二硼烷基-氧炔桥钨配合物 [Wη1-CO-B(NMe2)B(NMe2)(η5- )}(OC)2] (2)。
• Synthesis and Structure of Trisilane‐1,3‐diyl <i>ansa</i> Half‐Sandwich Complexes of Group 6 Metals
  作者：Holger Braunschweig、Rainer Dörfler、Kai Hammond、Jan Mies、Krzysztof Radacki

  DOI：10.1002/ejic.201000965

  日期：2010.12

  We present the synthesis and characterization of the first trisila-bridged ansa half-sandwich complexes of Group 6 transition metals in a one-step synthesis from dilithiated precursors Li[M(η 5 -C 5 H 4 Li)(CO) 3 ] (M = W, Mo) by use of stoichiometric amounts of Si 3 Me 6 Cl 2 under dilute conditions. Variation of the reaction conditions leads to dinuclear trisila-bridged half-sandwich complexes, which

  我们在一步合成中从二锂化前体 Li[M(η 5 -C 5 H 4 Li)(CO) 3 ] (CO) 3 ] ( M = W, Mo) 通过在稀释条件下使用化学计量的 Si 3 Me 6 Cl 2 。反应条件的变化导致双核三硅桥半夹心复合物，其也被表征。