The zero area thermal expansion (TE) of a cyanide-bridged honeycomb layer was demonstrated by (PPh4)[Cu2(CN)3] (PPh4+ = tetraphenyl phosphonium) via double distortion relaxation. This characteristic TE behaviour involves in-plane anisotropy of the distorted layer with positive and negative TE. The conformation change in distorted PPh4+ tetrahedrons also occurred between the layers. This was coupled with the anisotropic TE of the layers in accordance with complementary structural changes in the cation and anion counterparts.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics