PT Journal AU Kuppusamy, SK Del Giudice, N Heinrich, B Douce, L Ruben, M TI Bistable spin-crossover in a new series of [Fe(BPP-R)$_2$]$\^2+$(BPP = 2,6-bis(pyrazol-1-yl)pyridine; R = CN) complexes SO Dalton transactions PY 2020 BP 14258 EP 14267 VL 49 IS 40 DI 10.1039/d0dt02214d LA english ER