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Structural Studies and Solution Dynamics of Complexes of Magnesium with the N,N ‐Dimethylaminomethylferrocenyl Ligand
Author(s) -
Seidel Naka,
Jacob Klaus,
Fischer Axel K.,
Pietzsch Claus,
Zanello Pierro,
Fontani Marco
Publication year - 2001
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 - 10.1002/1099-0682(20011)2001:1<145::aid-ejic145>3.0.co;2-i
Subject(s) - chemistry , diastereomer , intramolecular force , magnesium , intermolecular force , halide , magnesium bromide , dissociation (chemistry) , diethyl ether , ligand (biochemistry) , medicinal chemistry , bromide , stereochemistry , inorganic chemistry , organic chemistry , molecule , biochemistry , receptor
The reaction of { C,N ‐[Fe(η 5 ‐C 5 H 5 )(η 5 ‐C 5 H 3 (CH 2 NMe 2 )‐2)]}Li, (FcN)Li, with magnesium bromide affords the magnesate complex Li 2 Mg(FcN) 2 Br 2 (OEt 2 ) 2 (1) . Extraction of 1 with diethyl ether yields (FcN) 2 Mg(OEt 2 ) (2). The reaction of (FcN)Li with magnesium halides and THF directly affords (FcN) 2 Mg(THF) (3) . In solution, these compounds appear as a mixture of diastereomers, whereas in the solid state they each crystallize as a single rac ‐diastereomer. The ratio of rac ‐ meso ‐diastereomers in solution is solvent‐ and temperature‐dependent, consistent with an intermolecular exchange between the diastereomers. An intramolecular dynamic phenomenon involving dissociation and recoordination of Mg−N bonds was also observed.