Site effects in controlling the chemical reactivity in crystals: solid-state photochromism of N-(n-propyl)nitrospiropyraneElectronic supplementary information (ESI) available: time decay of merocyanine absorption; overlay plot of molecules 1(A) and 1(B); plot of the ratio between the effective volume of the two sites as a function of the radius of the rigid sphere in the Monte Carlo calculation. See http://www.rsc.org/suppdata/cc/b1/b102121b/

Abstract

The dynamics of decay of the photoproducts of the two non equivalent molecules of N-(n-propyl) nitrospiropyrane in the crystalline state is significantly different due to the effect of the specific site where each of the molecules is located in the crystal latice.