M. V. Melikhov, D. V. Korchagin, Yu. P. Tupolova, L. D. Popov, V. A. Chetverikova, V. V. Tkachev, A. N. Utenyshev, N. N. Efimov, I. N. Shcherbakov, S. M. Aldoshin
{"title":"Complexes of Hexacoordinated Ni(II) Based on Diacetyl Bis-hetarylhydrazones: Structures and Magnetic Properties","authors":"M. V. Melikhov, D. V. Korchagin, Yu. P. Tupolova, L. D. Popov, V. A. Chetverikova, V. V. Tkachev, A. N. Utenyshev, N. N. Efimov, I. N. Shcherbakov, S. M. Aldoshin","doi":"10.1134/s1070328424600396","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Mononuclear nickel complexes [NiL<sup>1</sup>(NCS)<sub>2</sub>]·2DMSO (<b>I</b>), [NiL<sup>1</sup>(NCS)<sub>2</sub>]·DMF (<b>II</b>), and [NiL<sup>2</sup>(NCS)<sub>2</sub>]·0.5CH<sub>3</sub>OH·1.5H<sub>2</sub>O (<b>III</b>) with the distorted octahedral coordination node, where L<sup>1</sup> and L<sup>2</sup> are the tetradentate ligand systems derived from the products of the condensation of diacetyl with 2-hydrazinoquinoline and 2-hydrazino-4,6-dimethylpyrimidine, respectively, are synthesized. The structures of the compounds are determined by IR spectroscopy and XRD (CIF files ССDС nos. 2219793 (<b>I</b>), 2142035 (<b>II</b>), and 2219794 (<b>III</b>)). The quantum chemical modeling of the axial parameter of magnetic anisotropy in the zero field (<i>D</i>) is performed for the synthesized compounds in the framework of the SA-CASSCF+NEVPT2 method. The complexes are shown to be characterized by three-axis magnetic anisotropy close to the light magnetization plane with positive <i>D</i>. The axial parameter of magnetic anisotropy (<i>D</i><sub>exp</sub> = 8.79 cm<sup>−1</sup>) determined by the approximation of the magnetometry data on complex [NiL<sup>2</sup>(NCS)<sub>2</sub>]·0.5CH<sub>3</sub>OH·1.5H<sub>2</sub>O is consistent with the calculated value (<i>D</i><sub>calc</sub> = 11.5 cm<sup>−1</sup>).</p>","PeriodicalId":759,"journal":{"name":"Russian Journal of Coordination Chemistry","volume":null,"pages":null},"PeriodicalIF":1.1000,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Coordination Chemistry","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1134/s1070328424600396","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Mononuclear nickel complexes [NiL1(NCS)2]·2DMSO (I), [NiL1(NCS)2]·DMF (II), and [NiL2(NCS)2]·0.5CH3OH·1.5H2O (III) with the distorted octahedral coordination node, where L1 and L2 are the tetradentate ligand systems derived from the products of the condensation of diacetyl with 2-hydrazinoquinoline and 2-hydrazino-4,6-dimethylpyrimidine, respectively, are synthesized. The structures of the compounds are determined by IR spectroscopy and XRD (CIF files ССDС nos. 2219793 (I), 2142035 (II), and 2219794 (III)). The quantum chemical modeling of the axial parameter of magnetic anisotropy in the zero field (D) is performed for the synthesized compounds in the framework of the SA-CASSCF+NEVPT2 method. The complexes are shown to be characterized by three-axis magnetic anisotropy close to the light magnetization plane with positive D. The axial parameter of magnetic anisotropy (Dexp = 8.79 cm−1) determined by the approximation of the magnetometry data on complex [NiL2(NCS)2]·0.5CH3OH·1.5H2O is consistent with the calculated value (Dcalc = 11.5 cm−1).
期刊介绍：
Russian Journal of Coordination Chemistry is a journal that publishes reviews, original papers, and short communications on all aspects of theoretical and experimental coordination chemistry. Modern coordination chemistry is an interdisciplinary science that makes a bridge between inorganic, organic, physical, analytical, and biological chemistry.
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