2-PYRIDYLSELENENYL VERSUS 2-PYRIDYLTELLURENYL HALIDES: SYMMETRICAL CHALCOGEN BONDING IN THE SOLID STATE AND REACTIVITY TOWARDS NITRILES Article Buslov I.V., Novikov A.S., Khrustalev V.N., Grudova M.V., Kubasov A.S., Matsulevich Z.V., Borisov A.V., Lukiyanova J.M., Grishina M.M., Kirichuk A.A., Serebryanskaya T.V., Kritchenkov A.S., Tskhovrebov A.G. Symmetry. MDPI AG. Vol. 13. 2021.