Synthesis and Spin State of the Cobalt(II) Complexes with Substituted 2,6-Bis(pyrazol-3-yl)pyridine Ligands

被引：9

作者：

Pavlov, A. A. ^{[1
]}

Belov, A. S. ^{[1
]}

Savkina, S. A. ^{[1
]}

Polezhaev, A. V. ^{[1
]}

Aleshin, D. Yu. ^{[2
]}

Novikov, V. V. ^{[1
]}

Nelyubina, Yu. V. ^{[1
,3
]}

机构：

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

[2] Mendeleev Univ Chem Technol, Miusskaya Pl 9, Moscow 125190, Russia

[3] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Leninskii Pr 31, Moscow 119991, Russia

来源：

RUSSIAN JOURNAL OF COORDINATION CHEMISTRY | 2018年 / 44卷 / 08期

基金：

俄罗斯科学基金会;

关键词：

transition metal complexes; spin state; NMR spectroscopy; PARAMAGNETIC-SUSCEPTIBILITY; MAGNETIC-PROPERTIES; CROSSOVER; IRON(II); SYMMETRY; BEHAVIOR; DESIGN; NMR;

D O I：

10.1134/S1070328418080067

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The direct template reactions afford the cobalt(II) complexes (I-III) with the hydroxy- and acetyl-substituted 2,6-bis(pyrazol-3-yl)pyridine ligands containing the phenyl and 4-tert-butylphenyl group in position 1. All compounds are isolated in the individual state and characterized by elemental analysis and NMR spectroscopy. The X-ray diffraction data obtained for crystals of compound I (D<inverted exclamation>IF file CCDC 1577238) and the data for solutions (using the proposed approach to analysis of paramagnetic NMR shifts on the basis of quantum chemical calculations) show that in the complexes the metal ion exists in the high-spin state (S = 3/2) and undergoes no temperature-induced spin transition in a temperature range of 120-300 K.

引用

页码：489 / 495

页数：7

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