Solvent Polarity Predictably Tunes Spin Crossover T-1/2 in Isomeric Iron(II) Pyrimidine Triazoles
Two isomeric pyrimidine-based Rdpt-type triazole ligands were made: 4-(4-methylphenyl)-3-(2-pyrimidyl)-5-phenyl-4 H-1,2,4-triazole (L-2pyrimidine) and 4-(4-methylphenyl)-3-(4-pyrimidyl)-5-phenyl-4 H-1,2,4-triazole (L-4pyrimidine). When reacted with [FeII(pyridine)(4)(NCE)2], where E = S, Se, or BH3, two families of mononuclear iron(II) complexes are obtained, including six solvatomorphs, giving a total of 12 compounds: [Fe-II(L-2pyrimidine)(2)(NCS)2] (1), [Fe-II(L-2pyrimidine)(2)(NCSe)(2)] (2),...[Show more]
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