Inducing effect of additive agents on coordination assembly of silver(I) nitrate with 3,5-bis(2-pyridyl)-4-amino-1,2,4-triazole: supramolecular isomerism and interconversion.

By using different organic acids as additive agents, hydrothermal reactions of AgNO(3) with 3,5-bis(2-pyridyl)-4-amino-1,2,4-triazole (2-bpt) lead to formation of two conformational polymorphs of [Ag(2-bpt)](NO(3)) with bimetallocyclic and 1-D helical coordination patterns. Interconversion between the two supramolecular isomers can be achieved under proper conditions, which will pass through the same intermediate state.