Summary of methodologies/conditions used to achieve 1–4 CPs. System 3 was crystalline but not suitable for single-crystal X-ray diffraction; it was found in a mixture together with 1 and has been added to the table for comparative purposes.

CP	Ligand	Metal salt	Method	Solvent	Conditions
1	3pyCCMoid	Zn(NO3)2·6H2O	Solvothermal	DMF : MeOH (1 : 4)	80 °C
	0.018 mmol	0.054 mmol			72 h
2	3pyCCMoid	Zn(NO3)2·6H2O	Solvothermal	DMA : EtOH (1 : 4)	80 °C
	0.018 mmol	0.054 mmol			72 h
1 & 3	3pyCCMoid	Zn(NO3)2·6H2O	Solvothermal	DMF : EtOH (1 : 4)	80 °C
	0.018 mmol	0.054 mmol			72 h
4	3pyCCMoid	Zn(NO3)2·6H2O	Layering	DMF : EtOH (3 : 7)	RT
	0.108 mmol	0.215 mmol			2–3 weeks