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Versatile Bulky N , N ′, N ′‐Substituted 1,2‐Ethanediamine Ligands and Their Lithium, Aluminium, and Gallium Derivatives
Author(s) -
Kretschmer Robert,
Dehmel Maximilian,
Bodensteiner Michael
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201601355
Subject(s) - chemistry , deprotonation , lithium (medication) , gallium , steric effects , aluminium , catalysis , metal , delocalized electron , combinatorial chemistry , medicinal chemistry , crystallography , stereochemistry , organic chemistry , ion , medicine , endocrinology
Sterically demanding N , N ′, N ′‐substituted 1,2‐ethanediamine ligands have been prepared from commercially available starting materials by applying a facile one‐step procedure. These ligands offer advantages compared to known systems: a suppressed delocalization due to the saturated backbone inhibits a noninnocent behaviour and the low symmetry of the related metal complexes makes them potential candidates for asymmetric catalysis. The ligands are readily transformed into the corresponding lithium derivatives 4 , which in turn act as starting materials to access the corresponding aluminium and gallium dichlorides 5 and 6 , respectively. In addition, deprotonation by Al(CH 3 ) 3 gives rise to the related dimethylalane 7 . All main‐group element compounds have been studied by means of single X‐ray crystallography and spectroscopic methods.