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Synthesis and Structures of some Lithium and Sodium (Aminoalcoholato)hydrido Aluminates
Author(s) -
Nöth Heinrich,
Schlegel Andreas,
Lima Susana Rojas
Publication year - 2001
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 - 10.1002/1521-3749(200108)627:8<1793::aid-zaac1793>3.0.co;2-m
Subject(s) - lithium (medication) , sodium , chemistry , inorganic chemistry , materials science , organic chemistry , biology , endocrinology
LiAlH 4 and NaAlH 4 were allowed to react in a 1 : 1, 1 : 2 and 1 : 3 ratio with 2‐dimethylaminoethanol, 1‐dimethylamino‐2‐propanol, and (–)‐N‐methylephedrine. Reactions in the 1 : 1 ratio leads to mixtures of M(AlH 4–n (OR′NMe 2 ) n ) in thf solution showing a temperature dependent composition. From the solutions obtained in a 1 : 2 or 1 : 3 ratio the following compounds were isolated as single crystals: (thf)NaAlH 2 · (OCH 2 –CH 2 NMe 2 ) 2 ( 2 ), LiAlH 2 (OCHMe–CH 2 NMe 2 ) 2 ( 3 ), LiAlH 2 (OCHPh–CHMe–NMe 2 ) 2 ( 4 ), LiAlH(OCH 2 CH 2 NMe 2 ) 3 ( 5 ), NaAlH(OCH 2 CH 2 NMe 2 ) 3 ( 6 ). All compounds are dimers in the solid state and their Al atoms are pentacoordinated. M–H–Al bridges were found only in the dihydridoaluminate 2 .