Varied spin crossover behaviour in a family of dinuclear Fe(II) triple helicate complexes

Archer Rosanna J.; Scott Hayley S.; Polson Matthew I. J.; Williamson Bryce E.; Mathoniere Corine; Rouzieres Mathieu; Clerac Rodolphe; Kruger Paul E.

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Varied spin crossover behaviour in a family of dinuclear Fe(II) triple helicate complexes

机译：在核核Fe（ii）三重螺旋复合物的家庭中的各种旋转交叉行为

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Dinuclear triple-helicate complexes of the formula [Fe2L3](BF4)(4)solv (solv = CH3CN, CHCl3, H2O) have been synthesised and structurally characterised. The bis-bidentate ligands, L, present either strong-field 2-pyridylimine (1) or weaker-field 2-imidazolylimine (2) and 4-imidazolylimine (3) coordination spheres about Fe(ii) centres in an octahedral geometry. Whereas 1 is pervasively diamagnetic, spin crossover (SCO) behaviour is observed in 2 and 3 and has been studied using variable-temperature structural, UV-visible spectroscopic, magnetic and photo-magnetic techniques. Variable-temperature (1.8-400 K) magnetic-susceptibility measurements reveal the T-1/2 values of 2 and 3 to be strongly dependent upon the solvent and degree of solvation. Photomagnetic studies at 10 K under white-light irradiation revealed an inefficient photo-induced SCO in 2, but full switching in 3.

机译：已经合成并在结构表征的情况下合成了式[Fe 2L3]（BF4）（BF4）（4）溶液（SOLV = CH 3 CN，CHCL3，H 2 O）的二核三螺旋配合物。双子二齿配体L，L，呈上八面体几何形状的FO（II）中心，呈现强田2-吡啶胺（1）或较弱的场2-咪唑胺（2）和4-咪唑基昔嗪（3）配位球体。然而，在图1中，在2和3中观察到旋转交叉（SCO）行为，并且已经使用可变温度结构，UV可见光光谱，磁性和光磁技术研究。可变温度（1.8-400 k）磁性易感性测量显示T-1/2值为2和3的强烈依赖于溶剂和溶剂化程度。白光照射下10 k下的光磁性研究揭示了2个低效率的光诱导的SCO，但在3中完全切换。

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《Dalton transactions: An international journal of inorganic chemistry》 |2018年第24期|共10页
作者
Archer Rosanna J.; Scott Hayley S.; Polson Matthew I. J.; Williamson Bryce E.; Mathoniere Corine; Rouzieres Mathieu; Clerac Rodolphe; Kruger Paul E.;
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Univ Canterbury Sch Phys &

Chem Sci Private Bag 4800 Christchurch 8140 New Zealand;

Univ Canterbury Sch Phys &

Chem Sci Private Bag 4800 Christchurch 8140 New Zealand;

Univ Canterbury Sch Phys &

Chem Sci Private Bag 4800 Christchurch 8140 New Zealand;

Univ Canterbury Sch Phys &

Chem Sci Private Bag 4800 Christchurch 8140 New Zealand;

CNRS ICMCB UMR 5026 F-33600 Pessac France;

CNRS CRPP UMR 5031 F-33600 Pessac France;

CNRS CRPP UMR 5031 F-33600 Pessac France;

Univ Canterbury Sch Phys &

Chem Sci Private Bag 4800 Christchurch 8140 New Zealand;

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中图分类化学;无机化学;
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1. Varied spin crossover behaviour in a family of dinuclear Fe(II) triple helicate complexes [J] . Archer Rosanna J., Scott Hayley S., Polson Matthew I. J., Dalton transactions: An international journal of inorganic chemistry . 2018,第24期

机译：在核核Fe（ii）三重螺旋复合物的家庭中的各种旋转交叉行为
2. Synthesis, structure, and spin crossover above room temperature of a mononuclear and related dinuclear double helicate iron(II) complexes [J] . Hagiwara Hiroaki, Tanaka Tomoko, Hora Shiori Dalton transactions: An international journal of inorganic chemistry . 2016,第43期

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3. Structures and Spin States of Bis(tridentate)-Type Mononuclear and Triple Helicate Dinuclear lron(II) Complexes of Imidazole-4-carbaldehyde azine [J] . Sunatsuki Y, Kawamoto R, Fujita K, Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 2009,第18期

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Varied spin crossover behaviour in a family of dinuclear Fe(II) triple helicate complexes

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