Premium
Synthesis and Crystal Structure of an Oligomeric Lithium Bis(amido)hydridooxidoaluminate Cluster, [{Li(C 14 H 30 N 2 )AlHO 1/2 } 4 ]
Author(s) -
Gardiner Michael G.,
Raston Colin L.
Publication year - 2008
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200700468
Subject(s) - crystallography , monoclinic crystal system , lithium (medication) , crystal structure , chemistry , hydride , x ray crystallography , single crystal , metal , stereochemistry , diffraction , physics , medicine , organic chemistry , optics , endocrinology
The lithium bis(amido)hydridooxidoaluminate cluster [{Li(C 14 H 30 N 2 )AlHO 1/2 } 4 ] has been synthesized during systematic metallation/hydrometallation studies of a series of 1,4‐diazabut‐1‐enes with lithium aluminiumhydride. Formation of the complex is presumably derived from partial hydrolysis of the related lithium bis(amido)dihydridoaluminate and has been characterized using single crystal X‐ray diffraction. The complex crystallizes in the monoclinic space group C 2/ c (No. 15) with a = 25.012(2) Å, b = 10.673(2) Å, c = 28.673(3) Å, β = 115.855(7)°, V = 6887(1) Å 3 , Z = 4. The complex exhibits an oligomeric structure of crystallographic C 2 symmetry, comprised of complex multicyclic units arising from extensive metal, hydride, oxide and ligand bridging interactions. These associations give rise to edge‐fused, non‐planar NAlOLi four‐membered rings tightly binding two of the diamido‐chelated aluminate units, with these in turn aggregating further via two of the μ 2 ‐hydrides involving lithium atoms.