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[Li(12‐Krone‐4){(Me 3 Si) 2 N} 2 TiCH 2 SiMe 2 NSiMe 3 ] – ein Ionenpaar mit gestreckter Li–C–Ti‐Achse
Author(s) -
Putzer Markus A.,
Neumüller Bernhard,
Dehnicke Kurt
Publication year - 1998
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/(sici)1521-3749(199807)624:7<1087::aid-zaac1087>3.0.co;2-7
Subject(s) - lithium (medication) , crystallography , atom (system on chip) , ion , chemistry , toluene , carbon atom , crystal structure , lithium atom , ring (chemistry) , organic chemistry , medicine , ionization , computer science , embedded system , endocrinology
[Li(12‐Crown‐4){(Me 3 Si) 2 N} 2 TiCH 2 SiMe 2 NSiMe 3 ] – an Ion‐Pair with a Linear Li–C–Ti‐Axis The title compound ( 1 ) has been prepared from Ti[N(SiMe 3 ) 2 ] 3 and n‐butyllithium in OEt 2 /n‐hexane in the presence of 12‐crown‐4. Smaragd‐green single crystals of 1 · C 7 H 8 which were suitable for X‐ray crystallography were formed from toluene solutions at –18 °C. According to the crystal structure determination 1 forms ion pairs between the lithium atom and the CH 2 ‐carbon atom which is member of a planar Ti–C–Si–N heterocycle. The coordination geometry of the Li–C–Ti axis is linear (bond angle 172.8° in average of the two symmetry independent species) with coordination number five at the CH 2 ‐carbon atom.