Solvated structures of pyrrole-acetonitrile binary clusters studied by infrared cavity ringdown spectroscopy

► We observed the IR spectra of the pyrrole-acetonitrile binary clusters. ► The NH stretches of the clusters were measured by IR cavity ringdown spectroscopy. ► We determined solvated structures by performing a density functional theory. ► The binary clusters were formed by NH and CH H-bonds, and dipole interactions. ► The NBO analysis revealed the cooperative effect on solvated structures.