Bis(μ-dimesitylborinato-κ2O:O)bis[(2-methylpyridine-κN)lithium]

The title compound, [Li-2(C18H22BO)(2)(C6H7N)(2)], is a lithium dimesitylboroxide dimer in which the lithium cation is also coordinated by one molecule of 2-methylpyridine. At the core of the structure is an Li2O2 four-membered ring. The structure is centrosymmetric with an inversion centre midway between two Li atoms. Intermolecular C-H center dot center dot center dot pi interactions and pi-pi interactions between the 2-methylpyridine rings exist [centroid-centroid distance = 3.6312 (16) angstrom].