[iron(II)(bis(trimethylsilyl)amido)₂(pyridine)] | 518061-53-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡咯
• 英文名称: [iron(II)(bis(trimethylsilyl)amido)₂(pyridine)]
• CAS: 518061-53-5
• 化学式: C₁₇H₄₁FeN₃Si₄
• 分子量: 455.722
• InChiKey: AZSPDFRTJRYOIU-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

• 作为产物：
  描述：

  以 neat (no solvent, solid phase) 为溶剂， 以80%的产率得到[iron(II)(bis(trimethylsilyl)amido)₂(pyridine)]
  参考文献：
  名称：

  Reactions of M{N(SiMe3)2}2 (M=Mn, Fe or Co) with pyridine and 4,4′-bipyridyl: structural and magnetic studies

  摘要：

  The reactions of the aromatic nitrogen donor ligands pyridine (py) and 4,4'-bipyridyl (4,4-bipy) with the transition metal silylamides M{N(SiMe3)(2)}(2) (M = Mn, Fe or Cc) were investigated. Treatment of the metal amides with pyridine afforded the bispyridine complexes M{N(SiMe3)(2)}(py)(2) (M = Mn, 1a; Fe, 2a; Co, 3a). Distillation or sublimation of 2a or 3a afforded the monopyridine complexes M{N(SiMe3)(2)}(2)(py) (M = Fe, 2b; Co, 3b). The addition of pyrazine (prz) to Mn{N(SiMe3)(2)}(2) also yielded the bispyrazine adduct Mn{N(SiMe3)(2)}(2)(prz)(2), 1b. However, the reaction of 4,4'-bipyridyl with Fe{N(SiMe3)(2)}(2) or Co{N(SiMe3)(2)}(2) afforded the polymeric chain-like complexes {M{N(SiMe3)(2)}(2)(4,4'-bipy)}(infinity) (M = Fe, 4; Co, 5). With the exception of 2b, all complexes were characterized by X-ray crystallography. The complexes la, 1b, 2a and 3a displayed monomeric structures and metal geometries that are based on a tetrahedron with interligand angles that deviate markedly from idealized values. Complex 3b was found to have a distorted trigonal planar geometry. In contrast, complexes 4 and 5 displayed polymeric zig-zag chain structures which have four coordinate metal centers connected by 4,4'-bipyridyl ligands. Magnetic studies indicated that complexes 1-3b have high-spin electron configurations and that the paramagnetic centers in 4 and 5 did not interact with each other through the 4,4'-bipyridyl ligands. (C) 2002 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0277-5387(02)01264-0

文献信息

• Magnetic anisotropy in trigonal planar Fe(<scp>ii</scp>) bis(trimethylsilyl)amido complexes of the type [Fe{N(SiMe₃)₂}₂L]—experiment and theory
  作者：Tilmann Bodenstein、Andreas Eichhöfer

  DOI：10.1039/c9dt01702j

  日期：——

  phosphine or arsine type ligand (L = PPh3, PMe3 and AsPh3) display slow magnetic relaxation at temperatures below 8 K under applied dc (direct current) fields, whereas a complex with a phosphine oxide ligand (L = OPPh3) does not. Accordingly, the parameters characteristic for magnetic anisotropy, derived both from dc magnetic measurements and quantum chemical calculations, reveal distinct differences for

  对四个新的三角形平面高自旋Fe 2+配合物[Fe N（SiMe 3）2 } 2 L]进行的系统交流（交流）磁研究表明，该配合物包含膦或or型配体（L = PPh 3， PMe 3和AsPh 3）在施加的dc（直流）电场下，在低于8 K的温度下显示出缓慢的磁弛豫，而具有氧化膦配体（L = OPPh 3）的配合物则没有。因此，从直流磁测量和量子化学计算得出的磁各向异性的特征参数揭示了这两种复合物的明显差异。广泛的对上面列出的四个新络合物以及相关的报道的L = py，thf和PCy 3进行了多参考波函数类型的从头计算，以便合理地描述涉及磁弛豫的局部电子态。这些计算结果证实，强自旋轨道效应会产生L = PPh 3，PMe 3，AsPh 3和PCy 3的配合物的磁各向异性。另一方面，L = OPPh 3，py和THF的配合物仅表现出小的自旋轨道分裂，这与实验中发现的快速弛豫一致。