Crystal structures and Hirshfeld surface analyses of di-phenyl-methyl 2-(3,5-di-meth-oxy-phen-yl)acetate and di-phenyl-methyl 2-(3,4,5-tri-meth-oxy-phen-yl)acetate.

The title compounds, C(23)H(22)O(4), (I), and C(24)H(24)O(5), (II), differ in the presence of a meth-oxy group instead of a hydrogen atom between two meth-oxy groups attached to the phenyl ring of the phenyl acetate moiety, which affects not only the symmetry and number of formula units [triclinic, P1, Z = 2 for (I); monoclinic, P2(1)/n, Z = 4 for (II)], but also the mol-ecular conformations. An overlay of the two mol-ecular structures reveals a large root-mean-square-deviation of 2.4†à . Intra and inter-molecular C-H⋯O hydrogen bonds are responsible for the consolidation of the mol-ecular conformations and the crystal packing of both structures. Their inter-molecular inter-actions were qu-anti-fied and analysed using Hirshfeld surface analysis, revealing that H⋯H inter-actions contribute most to the crystal packing.