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Four-Coordinate Iron(II) Diaryl Compounds with Monodentate N-Heterocyclic Carbene Ligation: Synthesis, Characterization, and Their Tetrahedral-Square Planar Isomerization in Solution
Alternative Title单齿氮杂环卡宾配体支撑的四配位二价铁芳基化合物的合成、表征及其溶液相性质研究
Liu YS(刘月盛)1; Luo L(罗伦)1; Xiao J(肖洁)1; Wang L(王磊)1; Song Y(宋友)1; Qu JP(曲景平)1; Luo Y(罗一)1; Deng L(邓亮)1
2015
Source PublicationInorg. Chem.
Volume54Issue:10Pages:4752-4760
AbstractThe salt elimination reactions of (IPr2Me2)(2)FeCl2 (IPr2Me2 = 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene) with the corresponding aryl Grignard reagents afford [(IPr2Me2)(2)FeAr2] (Ar = Ph, 3; C6H4-p-Me, 4; C6H4-p-tBu, 5; C6H3-3,5-(CF3)(2), 6) in good yields. X-ray crystallographic studies revealed the presence of both tetrahedral and trans square planar isomers for 3 and 6 and the tetrahedral structures for 4 and 5. Magnetic susceptibility and Fe-57 Mossbauer spectrum measurements on the solid samples indicated the high-spin (S = 2) and intermediate-spin (S = 1) nature of the tetrahedral and square planar structures, respectively. Solution property studies, including solution magnetic susceptibility measurement, variable-temperature H-1 and F-19 NMR, and absorption spectroscopy, on 3-6, as well as an Fe-57 Mossbauer spectrum study on a frozen tetrahydrofuran solution of tetrahedral [(IPr2Me2)(2)(FePh2)-Fe-57] suggest the coexistence of tetrahedral and trans square planar structures in solution phase. Density functional theory calculations on (IPr2Me2)(2)FePh2 disclosed that the tetrahedral and trans square planar isomers are close in energy and that the geometry isomerization can occur by spin-change-coupled geometric transformation on four-coordinate iron(II) center.
Subtype论文
Subject Area金属有机化学
DOI10.1021/acs.inorgchem.5b00138
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000354908000021
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sioc.ac.cn/handle/331003/39602
Collection金属有机化学国家重点实验室
Corresponding AuthorLuo Y(罗一); Deng L(邓亮)
Affiliation1.中科院上海有机化学研究所, 金属有机化学国家重点实验室
2.大连理工大学
3.南京大学
Recommended Citation
GB/T 7714
Liu YS,Luo L,Xiao J,et al. Four-Coordinate Iron(II) Diaryl Compounds with Monodentate N-Heterocyclic Carbene Ligation: Synthesis, Characterization, and Their Tetrahedral-Square Planar Isomerization in Solution[J]. Inorg. Chem.,2015,54(10):4752-4760.
APA 刘月盛.,罗伦.,肖洁.,王磊.,宋友.,...&邓亮.(2015).Four-Coordinate Iron(II) Diaryl Compounds with Monodentate N-Heterocyclic Carbene Ligation: Synthesis, Characterization, and Their Tetrahedral-Square Planar Isomerization in Solution.Inorg. Chem.,54(10),4752-4760.
MLA 刘月盛,et al."Four-Coordinate Iron(II) Diaryl Compounds with Monodentate N-Heterocyclic Carbene Ligation: Synthesis, Characterization, and Their Tetrahedral-Square Planar Isomerization in Solution".Inorg. Chem. 54.10(2015):4752-4760.
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