1) Vermonden, T.; Branowska, D.; Marcelis, A.; Sudholter, E.; Tetrahedron 2003, 59(27), 5039-5045,
2) Rajadurai, C.; Schramm, F.; Brink, S.; Fuhr, O.; Ghafari, M.; Kruk, R.; Ruben, M.; Inorg. Chem. 2006, 45(25), 10019-10021, DOI: 10.1021/acs.inorgchem.6b01508 ; Nonanuclear Spin-Crossover Complex Containing Iron(II) and Iron(III) Based on a 2,6-Bis(pyrazol-1-yl)pyridine Ligand Functionalized with a Carboxylate Group
3) Kershaw Cook, L.; Kulmaczewski, R.; Mohammed, R.; Dudley, S.; Barrett, S.; Little, M.; Deeth, R.; Halcrow, M.; Angew. Chem., Int. Ed. 2016, 55(13), 4327-4331, DOI: 10.1002/anie.201600165 ; A Unified Treatment of the Relationship Between Ligand Substituents and Spin State in a Family of Iron(II) Complexes
4) Garcia-Lopez, V.; Palacios-Corella, M.; Girones-Perez, V.; Bartual-Murgui, C.; Real, J.; Pellegrin, E.; Herrero-Martin, J.; Aromi, G.; Clemente-Leon, M.; Coronado, E.; Inorg. Chem. 2019, 58(18), 12199-12208, DOI: 10.1021/acs.inorgchem.9b01526