Lewis-Base Adducts of Main Group-1 Metal-Compounds. VIII. Synthesis and Structural Characterization of 1-2 and 1-3 Adducts of Lithium-Nitrate With Monodentate Nitrogen Bases

Abstract

Crystallization of lithium(I) nitrate from 2-methylpyridine and 3,5-dimethylpyridine yields 1 : 2 and 1:3 adducts respectively, characterized by single-crystal X-ray structure determination. The 1:2 adduct is a linear polymeric species with the lithium atom four- coordinated by two monodentate ligands and two oxygen atoms of O,O′- bridging nitrate groups; there are two crystallographically independent polymeric strands in the structure. The 1:3 adduct is mononuclear, again with four-coordinate lithium. The three Li-N distances range from 2.05(2) to 2.08(2)Ǻ, while Li-O is 1.98(2)Ǻ.