期刊
INORGANIC CHEMISTRY
卷 55, 期 9, 页码 4110-4116出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.5b02058
关键词
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资金
- Generalitat de Catalunya
- ERC for Starting Grant [258060]
- MINECO [MAT2014-53961-R, CTQ2012-32247]
- CEI Iberus
- ERC [StG 258060]
- Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy [DE-AC02-05CH11231]
- GENCI-IDRIS [2014-80649]
- European Research Council (ERC) [258060] Funding Source: European Research Council (ERC)
We show a marked tendency of Fe(II) to form heteroleptic [Fe(L)(L')](ClO4)(2) complexes from pairs of chelating tris-imine 3bpp, tpy, or 2bbp ligands. New synthetic avenues for spin crossover research become thus available, here illustrated with three new heteroleptic compounds with differing magnetic behaviors: [Fe(H(4)L1)(Cl-tpy)](ClO4)(2)center dot C3H6O (1), [Fe(H2L3)(Me3bpp)](ClO4)(2)center dot C3H6O (2), [Fe(H(4)L1)(2bbp)](ClO4)(2)center dot 3C(3)H(6)O (3). Structural studies demonstrate that 1 is in the low-spin (LS) state up to 350 K, while complexes 2 and 3 are, by contrast, in the high-spin (HS) state down to 2 K, as corroborated through magnetic susceptibility measurements. Upon exposure to the atmosphere, the latter exhibits the release of three molecules of acetone per complex, turning into the solvent-free analogue [Fe(H(4)L1)(2bbp)](ClO4)(2) (3a), through a single-crystal-to-single-crystal transformation. This guest extrusion process is accompanied by a spin switch, from HS to LS.
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