An ab initio study of electric properties of linear (HCN)N and (HNC)N aggregates in gas phase

Abstract

We have accurately estimated the dipole moment (μ), the static linear polarizability View the MathML source and first hyperpolarizability (βtot and βHRS) per unit of long linear chains of HCN and HNC molecules, using the MP2/6-311++G(2d,2p) approach. It is found for both isomers that the intermolecular interactions have a substantial impact on the first hyperpolarizability, in comparison with the corresponding monomer results. For the infinite HCN [HNC] chains, the extrapolated values for μ, View the MathML source, βtot and βHRS per unit are estimated in 1.655 [2.145], 16.96 [19.42], 76.6 [134.9] and 32.4 [54.6] a.u., respectively.