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Synthesis and Chloride Affinity of Sterically Demanding Ditopic Lithium Bis(pyrazol‐1‐yl)borates
Author(s) -
Morawitz Thorsten,
Bolte Michael,
Lerner HansWolfram,
Wagner Matthias
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.200800108
Subject(s) - steric effects , chemistry , lithium (medication) , medicinal chemistry , boron , adduct , chloride , lithium chloride , ion , stereochemistry , inorganic chemistry , organic chemistry , medicine , endocrinology
The synthesis and full characterization of the sterically demanding ditopic lithium bis(pyrazol‐1‐yl)borates Li 2 [ p ‐C 6 H 4 (B(Ph)pz R 2 ) 2 ] is reported (pz R = 3‐phenylpyrazol‐1‐yl ( 3 Ph ), 3‐ t ‐butylpyrazol‐1‐yl ( 3 t Bu )). Compound 3 Ph crystallizes from THF as THF‐adduct 3 Ph (THF) 4 which features a straight conformation with a long Li···Li distance of 12.68(1) Å. Compound 3 t Bu was found to function as efficient and selective scavenger of chloride ions. In the presence of LiCl it forms anionic complexes [ 3 t Bu Cl] − with a central Li‐Cl‐Li core (Li···Li = 3.75(1) Å).