
TY  - JOUR
A1  - Raston, CL 
A1  - Whitaker, CR 
A1  - White, AH 
T1  - Lewis-Base Adducts of Main Group 1 Metal Compounds. VI. Novel Hydrogen Bonding and a Novel Binuclear Aquated Lithium Cation in [(H<sub>2</sub>O)<sub>2</sub>Li(OH<sub>2</sub>)<sub>2</sub>Li(OH<sub>2</sub>)<sub>2</sub>]<sup>2+</sup>.2Cl<sup>-</sup>.6L (L = 2,6-Dimethylpyridine)
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1988
VL  - 41
IS  - 3
SP  - 413
EP  - 416
KW  - 
UR  - https://doi.org/10.1071/CH9880413 
N2  - The title compound, isolated as an artefact of the recrystallization of lithium chloride from 2,6-dimethylpyridine, and the subject of a single-crystal X-ray study (R = 0.063 for 1200 'observed' reflections), contains the novel centrosymmetric [(H2O)2Li(OH2)2Li(OH2)2]2+ cation. Li- O(bridging) are 2.05(2), 2.00(2)&#506;; Li-O (terminal) are 1.88(2), 1.88(2)&#506;. Li-O-Li is 89.1(7) and O-Li-O&#8242; (core) is 90.9(8)&#176;. The angle between the terminal water oxygens at the lithium is 122.6(11)&#176; and O(terminal)-Li-O(bridge) range from 101.7(7) to 123.0(10)&#176;. An elegant hydrogen bonding scheme is found, one hydrogen atom from each of the water molecules being associated with the chloride counterion at 2.0- 2.2 &#506;; the other hydrogen atom of each water is directed towards the nitrogen atom of one of each of the base molecules, H&#8230;N ~ 1.6-2.1 &#506;. 
ER  -

