NOVELTY - A composition comprises: a compound selected from: (a) bis-alkynyl pyrazine and bis-alkynyl pyridine; (b) bispyridine substituted ellagic acid derivative; and (c) pyridine-substituted coumarin derivative.    USE - In the fields of organic synthesis, supramolecular chemistry; as highly soluble bases or catalysts in a variety of organic transformations; in the preparation of pharmaceuticals and agrochemicals; as dye sensitizers in solar cells, in organic light emitting diodes, and in the fields of artificial photosynthesis and related photogenerated energy transfer processes; and as components of adhesives, films, and other polymeric materials.    ADVANTAGE - The composition comprising pyridines and pyrazines can be used as highly soluble bases or catalysts in a variety of organic transformation; is valuable as synthons in organic synthesis, and are particularly useful in the preparation of pharmaceuticals and agrochemicals due to their propensity towards high biological activity; also serve as ligands in the chelation of a variety of metals and metal ions, and the resultant organometallic complexes of pyridines and pyrazines are utilized, for e.g. as catalysts in asymmetric organic transformations, as dye sensitizers in solar cells, in organic light emitting diodes, and in the fields of artificial photosynthesis and related photogenerated energy transfer processes; is also utilized industrially as components of adhesives, films, or other polymeric materials in which their properties, either alone or as metal complexes, impart valuable characteristics to the bulk material; and thus has widespread utility.    DETAILED DESCRIPTION - A composition comprises: a compound selected from: (a) bis-alkynyl pyrazine and bis-alkynyl pyridine of formulae (I) and (II), 4-(5-(4-hydroxy-but-1-ynyl)-pyridin-3-yl)-but-3-yn-1-ol (III) and 4-(6-(4-hydroxy-but-1-ynyl)-pyridin-2-yl)-but-3-yn-1-ol (IV); (b) bispyridine substituted ellagic acid derivative of formulae (V)-(VII); and (c) pyridine-substituted coumarin derivative of formulae (VIII)-(X).    R1=H or CH3;or    two adjacent R1 groups together=cyclohexane ring;    X=pyridyl;    X1=4-pyridyl;    R'=methylene, ethylene or propylene;    X2=4-pyridyl;    R'1=ethylene.