Be[N(SiMe3)2]2 | 25733-02-2

• 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: Be[N(SiMe3)2]2
• 英文别名: bis(bis(trimethylsilyl)amido)beryllium；beryllium bis(trimethylsilyl)amide；Be(N(SiMe3)2)2；Bis--beryllium；Bis-beryllium；Bis-[di-(trimethylsilyl)-amino]-beryllium
• CAS: 25733-02-2
• 化学式: C₁₂H₃₆BeN₂Si₄
• 分子量: 329.785
• InChiKey: RCLZYCRJTYNMKK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.65
• 重原子数：
  10.0
• 可旋转键数：
  2.0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  14.1
• 氢给体数：
  0.0
• 氢受体数：
  0.0

反应信息

• 作为反应物：
  描述：

  Be[N(SiMe3)2]2 生成 dimeric bis(diisopropylamino)beryllium
  参考文献：
  名称：

  Nöth, Heinrich; Schlosser, Dieter, Inorganic Chemistry, 1983, vol. 22, # 19, p. 2700 - 2703

  摘要：

  DOI：
• 作为产物：
  描述：

  beryllium(II) chloride 、 双(三甲基硅烷基)氨基钾 以 乙醚 、 甲苯 为溶剂， 反应 12.0h， 以86%的产率得到Be[N(SiMe3)2]2
  参考文献：
  名称：

  Bonding situation in Be[N(SiMe₃)₂]₂– an experimental and computational study

  摘要：

  铍[N(SiMe₃)₂]₂(1)的固态结构是通过原位结晶确定的，化学键情况经过量子化学计算进行了研究。 Be-N 键主要是离子键，但也显示一些π-键性质。

  DOI：

  10.1039/c4cc09732g

文献信息

• Syntheses and Structures of [(THF)<i>_n</i>M{(NSiMe₃)₂PPh₂}₂] Complexes (M = Be, Mg, Ca, Sr, Ba; <i>n</i> = 0−2):  Deviation of Alkaline Earth Metal Cations from the Plane of an Anionic Ligand
  作者：Roland Fleischer、Dietmar Stalke

  DOI：10.1021/ic9613117

  日期：1997.5.1

  The syntheses and solid-state structures of [(THF)(n)()M(NSiMe(3))(2)PPh(2)}(2)] (M = Be, n = 0, 1; M = Mg, n = 0, 2; M = Ca, n = 1, 3; M = Sr, n = 2, 4; M = Ba, n = 2, 5) are presented. Comparison of the geometric parameters within the homologous series and to related systems uncovers the dication-induced alterations of coordination to, as well as bonding within, the anionic fragment. The coordination

  [（THF）（n）（）M （NSiMe（3））（2）PPh（2）}（2）的合成和固态结构（M = Be，n = 0，1; M = Mg，n ＝ 0，2； M ＝ Ca，n ＝ 1、3； M ＝ Sr，n ＝ 2，4； M ＝ Ba，n ＝ 2，5）。同源序列和相关系统中几何参数的比较揭示了阳离子诱导的阴离子片段配位以及键合的改变。配位数从4（Be，Mg）通过5（Ca）增加到6（Sr，Ba）。Ph（2）P（Me（3）SiN）（2）阴离子中的两个覆盖了铍和镁的配位域，而钙仅含一个THF分子，锶和钡仅含两个额外的THF分子才能完成金属协调领域。出于空间考虑，在4和5中的两个THF分子与金属的同一半球配位，而留下两个阴离子的类固醇。即使对抗空间应变，碱土金属也会随着质量的增加而离开Ph（2）P（Me（3）SiN）（2）阴离子之一的平面，这表明Sr和Ba与pi电子密度相互作用的偏好。在相关系统中也
• Noeth, Heinrich; Schlosser, Dieter, European Journal of Inorganic Chemistry, 2003, # 12, p. 2245 - 2254
  作者：Noeth, Heinrich、Schlosser, Dieter

  DOI：——

  日期：——
• Metal-Dependent Reactions of Bulky Metal(II) Amides M[N(SiMe₃)₂]₂ with 3,3′-Disubstituted Binaphthols (HO)₂C₂₀H₁₀(SiR₃)₂-3,3′: Selective Conversion of One Equivalent −OH Group to a Silyl Ether −OSiMe₃
  作者：Anthony E. Wetherby、Lindy R. Goeller、Antonio G. DiPasquale、Arnold L. Rheingold、Charles S. Weinert

  DOI：10.1021/ic7016984

  日期：2008.3.1

  The outcome of the reaction of the bulky metal(II) amides M[N(SiMe3)(2)](2)center dot nTHF (M = Be, Zn, Ge, Sn, n = 0; M = Mg, Ca, n = 2) with (R)-3,3'-bis(trimethylsilyl)-1,1'-bi-2,2'-naphthol ((R)-1) or (S)-3,3'-bis(dimethylphenylsilyl)1,1'-bi-2,2'-naphthol ((S)-9) depends on the identity of the metal and the nature of the 3,3'-substituents. When M = Be, Zn, or Ge, these amides serve as useful silylation agents that convert only one of the equivalent hydroxyl groups of the binaphthol (R)-1 to a trimethylsilyl ether, whereas the reactions of (R)-1 with the Mg, Ca, or,Sn amides generate a polynuclear complex. The reaction pathway for these interconversions was qualitatively monitored using NMR (H-1 and Be-9) spectroscopy. Treatment of Ge[N(SiMe3)(2)](2) with (S)-9 yields both a silyl ether and the chelated germanium(II) binaphthoxicle (S)-[Ge(O2C20H10(SiMe2Ph)(2)-3,3')(NH3)], which was structurally characterized.
• Volatile Metal Alkoxides according to the Concept of Donor Functionalization
  作者：Wolfgang A. Herrmann、Norbert W. Huber、Oliver Runte

  DOI：10.1002/anie.199521871

  日期：1995.11.3

  AbstractSince the fundamental works of D. C. Bradley and R. C. Mehrotra, metal alkoxides have attracted attention because of the diversity of their low‐ and high‐molecular‐weight structures; they are also generating increasing interest as precursor compounds for solving technical materials problems. The understanding of the hydrolytic nucleation behavior is a prerequisite for the optimization of materials from sol–gel processes. For metal alkoxides to be precursors in chemical vapor deposition (CVD) processes in the preparation of inorganic oxidic materials, they should be sufficiently volatile, and sublimation should occur without decomposition at as low a temperature as possible (< 150 °C). Only recently, using the “donor functionalization” concept, was a ligand type systematically developed that unifies the advantages of both steric demands and σ‐donor stabilization and so stabilizes low‐molecularweight metal alkoxides. Even large metal ions of low charge (for example Ba2+) can thus form volatile alkoxides. O‐ and N‐donor functions in bidentate and multidentate alkoxo ligands are particularly advantageous; hence, for example, the vanadium derivative [V(OCMe2CH2OMe)3] is one of the most volatile metal alkoxides known to date. The first alkoxides of the alkaline earth metals calcium, strontium, and barium, which sublime without decomposition, have the formula [M2OC(CH2OiPr)2tBu}4]. This article presents a critical inventory of the metal alkoxides with particular regard to the aspect of volatility. It also describes successes of the donor functionalization concept and shows—in prespective—how alkoxo ligands can be “tailor made” for metals according to their charge‐to‐radius ratio by further development of the concept.
• A Novel Beryllium Thiolate Resulting from N−Si Bond Cleavage: Liberation of Ammonia in the Reaction of Be[N(SiMe3)2]2 with HSPh
  作者：Scott Chadwick、Ulrich Englich、Karin Ruhlandt-Senge

  DOI：10.1002/(sici)1521-3773(19981116)37:21<3007::aid-anie3007>3.0.co;2-r

  日期：1998.11.16

  A side reaction leads to the product. In the synthesis of [Be(SPh)2 (py)(NH3 )}2 [18]crown-6}] (1, py=pyridine) from [BeN(SiMe3 )2 }2 ] and HSPh, the coordinated ammonia molecules (see the structure of 1 in the picture) are formed in a competing reaction between liberated hexamethyldisilazane and the thiol.