Structural Diversity in Alkali Metal Complexes of Sterically Demanding Carbazol-9-yl Ligands

被引：15

作者：

Moorhouse, Rhiannon S. ^{[1
]}

Moxey, Graeme J. ^{[1
]}

Ortu, Fabrizio ^{[1
]}

Reade, Thomas J. ^{[1
]}

Lewis, William ^{[1
]}

Blake, Alexander J. ^{[1
]}

Kays, Deborah L. ^{[1
]}

机构：

[1] Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England

来源：

INORGANIC CHEMISTRY | 2013年 / 52卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

CROWN-ETHER ADDUCTS; LITHIUM DIISOPROPYLAMIDE; CRYSTAL-STRUCTURES; HETEROCYCLIC AMIDES; SOLID-STATE; COORDINATION; POTASSIUM; CHEMISTRY; HEXAMETHYLPHOSPHORAMIDE; DERIVATIVES;

D O I：

10.1021/ic302727w

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The solid state structures of alkali metal complexes of the 1,3,6,8-tetra-tert-butylcarbazol-9-yl ((t)Bu(4)carb(-)) ligand are compared. Lithium complex [(t)Bu(4)carbLi](2) ([1](2)) is a dimer in the solid state featuring a planar LiNLiN rhomboid ring, with the differing Li-N distances within the ring due to the effects of sigma- and pi-interactions. Recrystallization of lithium, sodium, and potassium complexes of the 1,3,6,8-tetra-tert-butylcarbazol-9-yl ligand from THF leads to the formation of (t)Bu(4)carbLi(THF)(2) (1.2THF), (t)Bu(4)carbNa(THF)(3) (2.3THF), and (t)Bu(4)carbK(THF)(4) (3.4THF), respectively, in the solid state. For these THF adducts, on proceeding from lithium to sodium to potassium there is an increase in hapticity of the binding of the carbazol-9-yl ligands to the metal cations, mirroring the increasing ionic bonding character in these compounds.

引用

页码：2678 / 2683

页数：6

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