Tetrakis(3-cyanopyridine)diisothiocyanatonickel(ii) and its clathrates with EtOH and CH2Cl2: structures, thermal stabilities and enthalpies of guest releaseWerner clathrates. Part 15.10 Electronic supplementary information (ESI) available: XRPD traces for 1–3 and for the product obtained on exposure of 1 to CH2Cl2 vapour; graphical representation of the Clausius–Clapeyron equation for the thermal decomposition of 2 and 3; rotatable 3-D crystal structure diagrams in CHIME format. See http://www.rsc.org/suppdata/dt/b1/b105299n/