A Series of Novel Pentagonal-Bipyramidal Erbium(III) Complexes with Acyclic Chelating N3O2 Schiff-Base Ligands: Synthesis, Structure, and Magnetism

被引：8

作者：

Bazhenova, Tamara A. ^{[1
]}

Kopotkov, Vyacheslav A. ^{[1
]}

Korchagin, Denis V. ^{[1
]}

Manakin, Yuriy V. ^{[1
]}

Zorina, Leokadiya V. ^{[1
,2
]}

Simonov, Sergey V. ^{[1
,2
]}

Yakushev, Ilya A. ^{[1
,3
]}

Mironov, Vladimir S. ^{[1
,4
]}

Vasiliev, Alexander N. ^{[5
,6
]}

Maximova, Olga V. ^{[6
]}

Yagubskii, Eduard B. ^{[1
]}

机构：

[1] IPCP RAS, Inst Problems Chem Phys, Chernogolovka 142432, Russia

[2] ISSP RAS, Inst Solid State Phys, Chernogolovka 142432, Russia

[3] IGIC RAS, Kurnakov Inst Gen & Inorgan Chem, Moscow 119333, Russia

[4] Shubnikov Inst Crystallog Fed Sci Res Ctr Crystal, Moscow 119333, Russia

[5] Natl Univ Sci & Technol MISiS, Lab Quantum Funct Mat, Moscow 119049, Russia

[6] Lomonosov Moscow State Univ, Moscow 119991, Russia

来源：

MOLECULES | 2021年 / 26卷 / 22期

基金：

俄罗斯科学基金会;

关键词：

field-induced single-molecular magnets; seven-coordinate complexes; Er(III) complexes; ligands H(2)DAPMBH and H(4)DAPS; crystal structure; DC and AC magnetic properties; SINGLE-MOLECULE MAGNETS; CRYSTAL-FIELD ANALYSIS; X-RAY-STRUCTURE; NI-II; MN-II; ELECTRONIC-STRUCTURE; SPECTRAL PROPERTIES; LN(III) COMPLEXES; ION-MAGNET; CU-II;

D O I：

10.3390/molecules26226908

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A series of six seven-coordinate pentagonal-bipyramidal (PBP) erbium complexes, with acyclic pentadentate [N3O2] Schiff-base ligands, 2,6-diacetylpyridine bis-(4-methoxybenzoylhydrazone) [H(2)DAPMBH], or 2,6-diacethylpyridine bis(salicylhydrazone) [H(4)DAPS], and various apical ligands in different charge states were synthesized: [Er(DAPMBH)(C2H5OH)Cl] (1); [Er(DAPMBH)(H2O)Cl]center dot 2C(2)H(5)OH (2); [Er(DAPMBH)(CH3OH)Cl] (3); [Er(DAPMBH)(CH3OH)(N-3)] (4); [(Et3H)N](+)[Er(H(2)DAPS)Cl-2](-) (5); and [(Et3H)N](+)[Y-0.Er-95(0).(05)(H(2)DAPS)Cl-2](-) (6). The physicochemical properties, crystal structures, and the DC and AC magnetic properties of 1-6 were studied. The AC magnetic measurements revealed that most of Compounds 1-6 are field-induced single-molecule magnets, with estimated magnetization energy barriers, U-eff approximate to 16-28 K. The experimental study of the magnetic properties was complemented by theoretical analysis based on ab initio and crystal field calculations. An experimental and theoretical study of the magnetism of 1-6 shows the subtle impact of the type and charge state of the axial ligands on the SMM properties of these complexes.

引用

页数：22

共 50 条

[21] STRUCTURALLY DIVERSE MANGANESE(III) CARBOXYLATE COMPLEXES OF N2O2 DONOR SET SYMMETRICAL SCHIFF-BASE LIGANDS
AURANGZEB, N
HULME, CE
MCAULIFFE, CA
PRITCHARD, RG
WATKINSON, M
BERMEJO, MR
SOUSA, A
[J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1994, (18) : 2193 - 2195
[22] Structurally diverse manganese(III) complexes of tetradentate N2O2 Schiff-base ligands with ancillary carboxylate donors
Hulme, CE
Watkinson, M
Haynes, M
Pritchard, RG
McAuliffe, CA
Jaiboon, N
Beagley, B
Sousa, A
Bermejo, MR
Fondo, M
[J]. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1997, (11): : 1805 - 1814
[23] SYNTHESIS, STRUCTURE, AND MAGNETIC-PROPERTIES OF A DODECAMANGANESE(II) COMPLEX AFFORDED BY A BINUCLEATING ACYCLIC N2O3 SCHIFF-BASE
LUNEAU, D
SAVARIAULT, JM
TUCHAGUES, JP
[J]. INORGANIC CHEMISTRY, 1988, 27 (22) : 3912 - 3918
[24] Encapsulation of copper(II) complexes with pentadentate N3O2 Schiff base ligands derived from acetylacetone in NaX zeolite
Ferreira, R
Silva, M
Freire, C
de Castro, B
Figueiredo, JL
[J]. MICROPOROUS AND MESOPOROUS MATERIALS, 2000, 38 (2-3) : 391 - 401
[25] Activity of a New Chromium(III) Complex with a Pentadentate (N3O2) Schiff-Base Ligand in the Reaction of Carbon Dioxide with Propylene Oxide
O. M. Chukanova
T. A. Bazhenova
O. G. Sheverdenkina
Yu. V. Manakin
I. A. Yakushev
A. B. Kornev
I. V. Sedov
[J]. Kinetics and Catalysis, 2021, 62 : 428 - 435
[26] Activity of a New Chromium(III) Complex with a Pentadentate (N3O2) Schiff-Base Ligand in the Reaction of Carbon Dioxide with Propylene Oxide
Chukanova, O. M.
Bazhenova, T. A.
Sheverdenkina, O. G.
Manakin, Yu. V.
Yakushev, I. A.
Kornev, A. B.
Sedov, I. V.
[J]. KINETICS AND CATALYSIS, 2021, 62 (03) : 428 - 435
[27] Electrochemical synthesis of neutral Mn(III) complexes with asymmetrical N2O2 Schiff base ligands
Bermejo, M
González, AM
Fondo, M
Maneiro, M
Rey, M
Vázquez, M
Hoyos, OL
García-Monteagudo, JC
[J]. INORGANICA CHIMICA ACTA, 2000, 307 (1-2) : 106 - 114
[28] Crystal Structure of C19H22N2O3 and Synthesis of Two Potential Schiff-base Ligands
LI Jian ② ZHANG Wen Xing MA Chang Qin JIANG De Hua (College of Chemistry
[J]. Chinese Journal of Structural Chemistry, 1999, (02) : 14 - 18
[29] Crystal structure of C19H22N2O3 and synthesis of two potential Schiff-base ligands
Li, J
Zhang, WX
Ma, CQ
Jiang, DH
Yang, TL
[J]. CHINESE JOURNAL OF STRUCTURAL CHEMISTRY, 1999, 18 (02) : 89 - 93
[30] Slow magnetic relaxation in mononuclear complexes of Tb, Dy, Ho and Er with the pentadentate (N3O2) Schiff-base dapsc ligand
Sasnovskaya, Valentina D.
Kopotkov, Vyacheslav A.
Kazakova, Anna, V
Talantsev, Artem D.
Morgunov, Roman B.
Simonov, Sergey, V
Zorina, Leokadiya, V
Mironov, Vladimir S.
Yagubskii, Eduard B.
[J]. NEW JOURNAL OF CHEMISTRY, 2018, 42 (18) : 14883 - 14893

← 1 2 3 4 5 →