TY - JOUR

T1 - Magnetically Active 3d Metal Complexes with 3-Amino-4-Ethoxycarbonylpyrazole

AU - Lavrenova, L. G.

AU - Ivanova, A. D.

AU - Bogomyakov, A. S.

AU - Komarov, V. Yu

AU - Sheludyakova, L. A.

N1 - Publisher Copyright: © 2019, Pleiades Publishing, Ltd.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - Abstract: Coordination compounds of iron(II) and nickel(II) with 3-amino-4-ethoxycarbonylpyrazole (L), FeL2A2 (A = Cl– (I), (II)), [FeL2(NCS)2(H2O)2] (III), and NiL2Br2 (IV), are synthesized. The compounds are studied by X-ray diffraction analysis, IR spectroscopy, and UV spectroscopy (diffuse reflectance spectra). A single crystal is observed for complex III, and its crystal structure is determined by X-ray structure analysis (СIF file CCDC no. 1857220). It is shown that L coordinates to the metal via the monodentate mode by the N(2) atom of the pyrazole cycle. The study of the temperature dependence µeff(Т) in a temperature range of 2–300 K shows exchange interactions of the antiferro- or ferromagnetic character between the M2+ ions in the complexes. The type of exchange interactions depends on the composition of the compound.

AB - Abstract: Coordination compounds of iron(II) and nickel(II) with 3-amino-4-ethoxycarbonylpyrazole (L), FeL2A2 (A = Cl– (I), (II)), [FeL2(NCS)2(H2O)2] (III), and NiL2Br2 (IV), are synthesized. The compounds are studied by X-ray diffraction analysis, IR spectroscopy, and UV spectroscopy (diffuse reflectance spectra). A single crystal is observed for complex III, and its crystal structure is determined by X-ray structure analysis (СIF file CCDC no. 1857220). It is shown that L coordinates to the metal via the monodentate mode by the N(2) atom of the pyrazole cycle. The study of the temperature dependence µeff(Т) in a temperature range of 2–300 K shows exchange interactions of the antiferro- or ferromagnetic character between the M2+ ions in the complexes. The type of exchange interactions depends on the composition of the compound.

KW - 3-amino-4-ethoxycarbonylpyrazole

KW - 3d metals

KW - complexes

KW - diffuse reflectance spectra

KW - IR spectra

KW - magnetochemical study

KW - X-ray diffraction analysis

KW - X-ray structure analysis

KW - CU(II)

KW - DINUCLEAR

KW - CRYSTAL-STRUCTURES

KW - CO(II)

KW - COORDINATION-COMPOUNDS

KW - DICYANAMIDE

UR - http://www.scopus.com/inward/record.url?scp=85066961574&partnerID=8YFLogxK

U2 - 10.1134/S1070328419040055

DO - 10.1134/S1070328419040055

M3 - Article

AN - SCOPUS:85066961574

VL - 45

SP - 347

EP - 355

JO - Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya

JF - Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya

SN - 1070-3284

IS - 5

ER -