Towards the Molecular Design of Spin-Crossover Complexes of 2,6-Bis(pyrazol-3-yl)pyridines

被引：32

作者：

Nikovskiy, Igor ^{[1
]}

Polezhaev, Alexander ^{[1
,2
]}

Novikov, Valentin ^{[1
,3
]}

Aleshin, Dmitry ^{[1
,4
]}

Pavlov, Alexander ^{[1
,3
]}

Saffiulina, Elnara ^{[1
,4
]}

Aysin, Rinat ^{[1
,3
]}

Dorovatovskii, Pavel ^{[5
]}

Nodaraki, Lydia ^{[6
]}

Tuna, Floriana ^{[6
]}

Nelyubina, Yulia ^{[1
,2
]}

机构：

[1] Russian Acad Sci, AN Nesmeyanov Inst Organoelement Cpds, Vavilova Str 28, Moscow 119991, Russia

[2] Bauman Moscow State Tech Univ, 2nd Baumanskaya Str 5, Moscow 105005, Russia

[3] Moscow Inst Phys & Technol, Inst Skiy Per 9, Dolgoprudnyi 141700, Moscow Region, Russia

[4] Mendeleev Univ Chem Technol Russia, Miusskaya Pl 9, Moscow 125047, Russia

[5] Natl Res Ctr Kurchatov Inst, Akad Kurchatova Pl 1, Moscow 123182, Russia

[6] Univ Manchester, Oxford Rd, Manchester M13 9PL, Lancs, England

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2020年 / 26卷 / 25期

基金：

俄罗斯科学基金会;

关键词：

2; 6-bis(pyrazol-3-yl)pyridine; iron(II) complexes; molecular design; NMR spectroscopy; spin-crossover; IRON(II) COMPLEXES; PARAMAGNETIC-SUSCEPTIBILITY; STATE; LIGANDS; 2,6-DI(PYRAZOL-1-YL)PYRIDINE; NMR; TRANSITION; DISTORTION; SERIES;

D O I：

10.1002/chem.202000047

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The molecular design of spin-crossover complexes relies on controlling the spin state of a transition metal ion by proper chemical modifications of the ligands. Herein, the first N,N'-disubstituted 2,6-bis(pyrazol-3-yl)pyridines (3-bpp) are reported that, against the common wisdom, induce a spin-crossover in otherwise high-spin iron(II) complexes by increasing the steric demand of a bulky substituent, an ortho-functionalized phenyl group. As N,N'-disubstituted 3-bpp complexes have no pendant NH groups that make their spin state extremely sensitive to the environment, the proposed ligand design, which may be applicable to isomeric 1-bpp or other families of popular bi-, tri- and higher denticity ligands, opens the way for their molecular design as spin-crossover compounds for future breakthrough applications.

引用

页码：5629 / 5638

页数：10

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