cis,cis-W2Cl4(NEt2)2(NHEt2)2 | 185462-40-2

• 英文名称: cis,cis-W2Cl4(NEt2)2(NHEt2)2
• CAS: 185462-40-2；186958-82-7
• 化学式: C₁₆H₄₂Cl₄N₄W₂
• 分子量: 800.048
• InChiKey: HFQWLUVFAOGREJ-UHFFFAOYSA-J

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为反应物：
  描述：

  cis,cis-W2Cl4(NEt2)2(NHEt2)2 、 1,3-双(二苯基膦)丙烷 以 四氢呋喃 、 甲苯 为溶剂， 以20%的产率得到
  参考文献：
  名称：

  W2Cl4(NR2)2(PR3′)2 molecules—9. New mixed valent WIII/WIV face-sharing bioctahedral complexes with chelating bis(diphenylphosphino)propane and dialkylamido ligands

  摘要：

  The triply-bonded ditungsten(III) species trans,trans-W2Cl4(NBu2n)(2)(dppp) (1) and a new mixed-valent W-III/W-IV complex (dppp) ClW(mu-Cl)(3)WCl2(NBu2n) (3) have been isolated from the reaction of W2Cl4 (NBu2n)(2)(NHBu2n)(2) with 1,3-bis(diphenylphosphino)propane (dppp). A complex similar to 3, (dppp)ClW(mu-Cl)(3)WCl2(NEt2) (2), has also been prepared. Both 2 and 3 are characterized by a W-2(7+) core and they adopt face-sharing bioctahedral geometry with a chelating dppp ligand. The W-W distances in 2 and 3 are both 2.660(1) Angstrom and each of them shows an EPR signal at g = 1.88. The structure of 1 contains a W-2(6+) core with a W-W distance of 2.3055(8) Angstrom. It has a bridging dppp ligand and a trans,trans stereochemistry. (C) 1997 Elsevier Science Ltd.

  DOI：

  10.1016/s0277-5387(97)00216-7
• 作为产物：
  描述：

  二乙胺 、 四氯化钨 、 三甲基膦 在 Na-amalgam 、 THF 作用下， 以 四氢呋喃 为溶剂， 以55%的产率得到
  参考文献：
  名称：

  Cotton, F. Albert; Dikarev, Evgeny V.; Nawar, Inorganic Chemistry, 1997, vol. 36, # 4, p. 559 - 566

  摘要：

  DOI：

文献信息

• W₂Cl₄(NR₂)₂(PR‘₃)₂ Molecules. 5. Preparation and Characterization of W₂Cl₄(NEt₂)₂(L-L) (L-L = dmpm, dmpe, dppe), W₂Cl₄(NBu₂)₂(L-L) (L-L = dmpm, dmpe), and W₂Cl₄(NHex₂)₂(dmpm). First Complexes with Bridging Diphosphine Ligands in a <i>cis</i>,<i>trans</i>-Stereochemistry
  作者：F. Albert Cotton、Evgeny V. Dikarev、Wai-Yeung Wong

  DOI：10.1021/ic961151z

  日期：1997.2.1

  The triply-bonded ditungsten complexes W2Cl4(NEt(2))(2)(L-L) (L-L = dmpm, dmpe), W2Cl4(NBu(2))(2)(L-L) (L-L = dmpm, dmpe), and W2Cl4(NHex(2))(2)(dmpm) are formed in the reactions between W2Cl4(NR(2))(2)(NHR(2))(2) (R = Et, Bu, Hex = n-C6H13) and bis(dimethylphosphino)methane (dmpm) or bis(dimethylphosphino)ethane (dmpe). In each case, three isomeric forms have been detected in solution by P-31 H-1} NMR spectroscopy, and they are formulated as the trans,trans-, cis,trans-, and cis,cis-isomers. Complexes designated cis,trans have one P atom of the bridging diphosphine cis to the N atom on one W atom and another P atom trans to the N atom on the other W atom. The characterization of cis-trans-W2Cl4(NEt(2))(2)(dmpm) (1), cis,cis-W2Cl4(NEt(2))(2)(dmpm) (2), cis,trans-W2Cl4(NEt(2))(2)(dmpm) (3), cis,cis-W2Cl4(NBu(2))(2)(dmpm) (4a, 4b), cis,cis-W2Cl4(NHex(2))(2)(dmpm) (5), cis,trans-W2Cl4(NEt(2))(2)(dmpe) (6), and cis,trans-W2Cl4(NBu(2))(2)(dmpe) (7) has been accomplished by X-ray crystallography. Pertinent crystal data are as follows: for 1, monoclinic space group C2/c, a = 33.210(3) Angstrom, b = 8.725(4) Angstrom, c = 17.052(4) Angstrom, beta = 100.44(1)degrees, Z = 8; for 2, monoclinic space group P2(1)/c, a = 14.958(2) Angstrom, b = 21.028(8) Angstrom, c = 12.778(5) Angstrom, beta = 91.77(3)degrees, Z = 4; for 3, orthorhombic space group Pbca, a = 14.958(2) Angstrom, b = 15.823(2) Angstrom, c = 27.8014(9) Angstrom, Z = 8; for 4a, C2/c, a = 18.011(4) Angstrom, b = 17.221(4) Angstrom, c = 21.264(6) Angstrom, beta = 103.33(2)degrees, Z = 8; for 4b (4a,b are polymorphic), Pbca, a = 14.772(2) Angstrom, b = 17.188(1) Angstrom, c = 25.370(3) Angstrom, Z = 8; for 5, C2/c, a = 18.368(4) Angstrom, b = 17.060(2) Angstrom, c = 30.414(4) Angstrom, beta = 103.96(1)degrees, Z = 8; for 6, P2(1)/c, a = 9.596(2) Angstrom, b = 15.975(2) Angstrom, c = 18.756(4) Angstrom, beta = 96.73(1)degrees, Z = 4; for 7, monoclinic space group P2(1)/n, a = 9.465(1) Angstrom, b = 34.545(7) Angstrom, c = 10.177(4) Angstrom, beta = 97.220(1)degrees, Z = 4. Among them is one unprecedented type of geometrical isomer, namely, the cis,trans-isomers of W2Cl4P2N2 complexes. In order to structurally characterize a trans,trans-isomer for W2Cl4(NR(2))(2)(L-L) molecules, a bis(diphenylphosphino)ethane (dppe) analogue, trans,trans-W2Cl4(NEt(2))(2)(dppe) (8), has been prepared, and it crystallizes with a molecule of toluene, in the space group P2(1)/n with a = 16.396(3) Angstrom, b = 10.104(2) Angstrom, c = 26.680(2) Angstrom, beta = 92.22(1)degrees, and Z = 4. Each of the compounds 1-8 has an essentially staggered W2Cl4P2N2 conformation with the W atoms bound by a triple bond. The W-W distances fall within the narrow range 2.314-2.341 Angstrom. All of them show significant torsion angles in the solid state.
• Cotton, F. Albert; Dikarev, Evgeny V.; Nawar, Inorganica Chimica Acta, 1997, vol. 262, # 1, p. 21 - 32
  作者：Cotton, F. Albert、Dikarev, Evgeny V.、Nawar、Wong, Wai-Yeung

  DOI：——

  日期：——