Photochromic diarylethene ligands featuring 2-(imidazol-2-yl)pyridine coordination site and their iron(II) complexes

机译：具有2-（咪唑-2-基）吡啶配位点的光致变色二芳基乙烯配体及其铁（II）配合物

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摘要

A new family of photochromic diarylethene-based ligands bearing a 2-(imidazol-2-yl)pyridine coordination unit has been developed. Four members of the new family have been synthesized. The photoactive ligands feature non-aromatic ethene bridges (cyclopentene, cyclopentenone, and cyclohexenone), as well as closely spaced photoactive and metal coordination sites aiming a strong impact of photocyclization on the electronic structure of the coordinated metal ion. The ligands with cyclopentenone and cyclohexenone bridges show good cycloreversion quantum yields of 0.20–0.32. The thermal stability of closed-ring isomers reveals half-lives of up to 20 days in solution at room temperature. The ligands were used to explore coordination chemistry with iron(II) targeting photoswitchable spin-crossover complexes. Unexpectedly, dinuclear and tetranuclear iron(II) complexes were obtained, which were thoroughly characterized by X-ray crystallography, magnetic measurements, and Mössbauer spectroscopy. The formation of multinuclear complexes is facilitated by two coordination sites of the diarylethene, acting as a bridging ligand. The bridging nature of the diarylethene in the complexes prevents photocyclization.

机译：已经开发了带有2-（咪唑-2-基）吡啶配位单元的基于光致变色二芳基乙烯的配体新家族。新家族的四个成员已经合成。光活性配体具有非芳族乙烯桥（环戊烯，环戊烯酮和环己烯酮），以及间隔很近的光活性和金属配位点，这些位点旨在使光环化对配位金属离子的电子结构产生强烈影响。带有环戊烯酮桥和环己烯酮桥的配体显示出良好的环回复量子产率，为0.20–0.32。闭环异构体的热稳定性表明，在室温下溶液的半衰期可达20天。配体用于探索与铁（II）靶向配位的光可开关自旋交联配合物的配位化学。出乎意料的是，获得了双核和四核铁（II）配合物，这些配合物通过X射线晶体学，磁性测量和Mössbauer光谱进行了全面表征。多核配合物的形成是通过作为桥连配体的二芳基乙烯的两个配位点促进的。二芳基乙烯在配合物中的桥连性质阻止了光环化。

著录项

期刊名称 Beilstein Journal of Organic Chemistry
作者
Andrey G Lvov; Max Mörtel; Anton V Yadykov; Frank W Heinemann; Valerii Z Shirinian; Marat M Khusniyarov;
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作者单位

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年(卷),期 2019(15),-1
年度 2019
页码 2428–2437
总页数 10
原文格式 PDF
正文语种
中图分类生化遗传学;生化药理学;
关键词
diarylethene 2-(imidazol-2-yl)pyridine iron(II) complex photochromism;

机译：二芳基乙烯;2-（咪唑-2-基）吡啶;铁（II）配合物;光致变色;

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2. THE COORDINATION CHEMISTRY OF MIXED PYRIDINE-PHENOL LIGANDS - SYNTHESES AND CRYSTAL STRUCTURES OF MN(III) AND NI(II) COMPLEXES OF 2-(2-HYDROXYPHENYL) PYRIDINE [J] . Bardwell DA., Ward MD., Jeffery JC. Inorganica Chimica Acta . 1995,第1a2期

机译：混合的吡啶-苯酚配位化合物的配位化学-2-（2-羟基苯氧基）吡啶的MN（III）和Ni（II）配合物的合成和晶体结构
3. HIGHLY STABILIZED LOW-SPIN IRON(III) AND COBALT(III) COMPLEXES OF A TRIDENTATE BIS-AMIDE LIGAND 2,6-BIS(N-PHENYLCARBAMOYL)PYRIDINE - NOVEL NONMACROCYCLIC TETRAAMIDO-N COORDINATION AND TWO UNUSUALLY SHORT METAL-PYRIDINE BONDS [J] . Ray M., Shirin Z., Mukherjee R., Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 1997,第16期

机译：梯状双酰胺酰胺配体2,6-双（N-苯甲酰氨基）吡啶-新的非大环四胺-N-配位和两个不寻常的短金属吡啶化合物的高度稳定的低旋铁和钴（III）配合物
4. SERR, FT-Raman, and FT-IR Spectroscopies of Mono- and Dinuclear Ruthenium(II) Bipyridine Complexes with 1,4-Bis ([1,10]Phenanthroline-[5,6-D]Imidazol-2-Yl)Benzene Ligand [C] . Xiao-Yuan Li International conference on Raman spectroscopy;ICORS 2000 . 2000

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5. Part A: Coordination of pyridine and pyridine-type ligands to cobalt(II)- and cobalt(III)-substituted Keggin and Dawson-type heteropolyanions. Part B: Encapsulation of various heteropolyanions in artificial phospholipid vesicles: Effects of size, charge, and polarity on encapsulation efficiency. [D] . Samonte, Joseph Laurito. 1996

机译：A部分：吡啶和吡啶型配体与钴（II）和钴（III）取代的Keggin和Dawson型杂多阴离子的配位。 B部分：在人工磷脂囊泡中包裹各种杂多阴离子：大小，电荷和极性对包裹效率的影响。
6. Supramolecular Chemistry And Self-assembly Special Feature: Anion-templated self-assembly of tetrahedral cage complexes ofcobalt(II) with bridging ligands containing two bidentatepyrazolyl-pyridine binding sites [O] . Rowena L. Paul, Zöe R. Bell, John C. Jeffery, 2002

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7. Metal Coordination-Assisted Near-Infrared Photochromic Behavior: A Large Perturbation on Absorption Wavelength Properties of N,N-Donor Ligands Containing Diarylethene Derivatives by Coordination to the Rhenium(I) Metal Center [O] . -1

机译：金属协调辅助近红外光致变色行为：通过与铼（I）金属中心的配位含有二芳基乙烯衍生物的N，N-供体配体的吸收波长特性的大扰动
8. Moessbauer Study of Some Iron (III) Complexes with Urea-Type Ligands and Crystal Structure of Hexakisdimethylurea Iron (III) Perchlorate [R] . Calogero, S., Galeazzi, G., Russo, U., 1980

机译：moessbauer研究一些具有尿素型配体的铁（III）配合物和Hexakisdimethylurea铁（III）高氯酸盐的晶体结构

Photochromic diarylethene ligands featuring 2-(imidazol-2-yl)pyridine coordination site and their iron(II) complexes

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