From ternary strings to Wiener indices of benzenoid chains Original Research Article

An explicit, non-recursive formula for the Wiener index of any given benzenoid chain is derived, greatly speeding up calculations and rendering it manually manageable, through a novel envisioning of chains as ternary strings. Previous results are encompassed and two completely new and useful ones are obtained, a formula to determine Wiener indices of benzenoid chains in periodic patterns, and another to estimate errors in the Wiener index induced by errors or indeterminate links in the graph.