trans-bis[dichloro(μ-(tris(tert-butyl)silyl)phosphino)gallane] | 720693-70-9

• 英文名称: trans-bis[dichloro(μ-(tris(tert-butyl)silyl)phosphino)gallane]
• 英文别名: trans-[Cl2GaP(H)Si(C(CH3)3)2]2
• CAS: 720693-70-9
• 化学式: C₂₄H₅₆Cl₄Ga₂P₂Si₂
• 分子量: 744.085
• InChiKey: GETVKFLPRYUPTR-UHFFFAOYSA-J

反应信息

• 作为产物：
  描述：

  potassium (tris(tert-butyl)silyl)phosphanide 、 氯化镓 以 甲苯 为溶剂， 生成 trans-bis[dichloro(μ-(tris(tert-butyl)silyl)phosphino)gallane] 、 cis-bis[dichloro(μ-(tris(tert-butyl)silyl)phosphino)gallane]
  参考文献：
  名称：

  Dimeric (Tris(tert-butyl)silyl)phosphanyl (Tris(tert-butyl)silyl)phosphanediyl Gallane: A Molecule with a Ga−P−Ga Heteroallyl System

  摘要：

  The metathesis reaction of potassium (tris(tert-butyl)silyl)phosphanide with GaCl3 in a molar ratio of 1:1 leads to the formation of [Cl2GaP(H)(SiBu3)-Bu-t](2) (1) as a mixture of cis and trans isomers with very large (1)J(P,H) and (2)J(P,P) coupling constants. The molecular structure of 1 shows a Ga2P2 cycle with nearly planar coordinated phosphorus atoms under neglection of the hydrogen atoms and Ga-P distances of 239 pm. The reaction of GaCl3 with 3 equiv of potassium (tris(tert-butyl)silyl)phosphanide as well as the reaction of 1 with 2 equiv of KP(H)(SiBu3)-Bu-t yields [(Bu3SiP)-Bu-t(H)Ga(mu-PSi'Bu-3)](2) (2). The central moiety comprises a four-membered Ga2P2 cycle with one planar P atom and extremely short Ga-P bonds of approximately 226 pm, the other being in a pyramidal environment with an angle sum of 298.4degrees. The structure of 2 can be described as a GaPGa heteroallyl system which is bonded to a phosphanidyl substituent. This idea and its dependency on the steric demand of the trialkylsilyl groups are investigated by DFT calculations on different isomers of 2.

  DOI：

  10.1021/ic0303284