Slow magnetic relaxation in five-coordinate spin-crossover cobalt(II) complexes

被引：49
|
作者：
Cui, Hui-Hui [1 ]
Wang, Jing [1 ]
Chen, Xue-Tai [1 ]
Xue, Zi-Ling [2 ]
机构：
[1] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, Nanjing 210023, Jiangsu, Peoples R China
[2] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA
来源：
CHEMICAL COMMUNICATIONS | 2017年 / 53卷 / 67期
基金：
美国国家科学基金会;
关键词：
SINGLE-MOLECULE MAGNET; ION MAGNET; BEHAVIOR; IRON(II); STATE; 4-COORDINATE; ANISOTROPY; BLOCKING; SYSTEMS; FE(II);
D O I：
10.1039/c7cc04785a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We present the first examples of the coexistence of field induced slow magnetic relaxation and spin-crossover observed in five-coordinate cobalt(II) complexes [Co(12-TMC)(CH3CN)](X)(2) (12-TMC = 1,4,7,10-tetramethyl-1,4,7,10-tetraazacyclododecane, X = BF4-, 1; PF6-, 2). The direct-current (dc) magnetic data show a gradual and incomplete spin-crossover at high temperature. 1 and 2 display frequency-and temperature-dependent alternating-current (ac) magnetic susceptibility under an applied dc field of 2500 Oe, which originates from the S = 1/2 spin state of Co(II) ions.
引用
收藏
页码：9304 / 9307
页数：4
相关论文
共 50 条
  • [1] Bulky anion supported a five-coordinate spin-crossover cobalt(II) complex with slow magnetic relaxation
    Cui, Hui Hui
    Sun, Tong Ming
    Wang, Miao
    Chen, Lei
    Tang, Yan Feng
    JOURNAL OF SOLID STATE CHEMISTRY, 2020, 289
  • [2] Slow Magnetic Relaxation in a Mononuclear Five-Coordinate Cu(II) Complex
    Cui, Hui-Hui
    Lv, Wei
    Tong, Wei
    Chen, Xue-Tai
    Xue, Zi-Ling
    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2019, 2019 (43) : 4653 - 4659
  • [3] Slow Magnetic Relaxation and Spin-Crossover Behavior in a Bicomponent Ion-Pair Cobalt(II) Complex
    Shao, Dong
    Deng, Lin-Dan
    Shi, Le
    Wu, Dong-Qing
    Wei, Xiao-Qin
    Yang, Si-Run
    Wang, Xin-Yi
    EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2017, (33) : 3862 - 3867
  • [4] Spin-crossover in cobalt(II) imine complexes
    Krivokapic, Itana
    Zerara, Mohamed
    Daku, Max Lawson
    Vargas, Alfredo
    Enachescu, Cristian
    Ambrus, Christina
    Tregenna-Piggott, Philip
    Amstutz, Nahid
    Krausz, Elmars
    Hauser, Andreas
    COORDINATION CHEMISTRY REVIEWS, 2007, 251 (3-4) : 364 - 378
  • [5] Reversible five-coordinate ⇆ six-coordinate transformation in cobalt(II) complexes
    Xiao, Linda
    Bhadbhade, Mohan
    Baker, Anthony T.
    JOURNAL OF MOLECULAR STRUCTURE, 2018, 1157 : 112 - 118
  • [6] Role of Coordination Geometry on the Magnetic Relaxation Dynamics of Isomeric Five-Coordinate Low-Spin Co(II) Complexes
    Spillecke, Lena
    Tripathi, Shalini
    Koo, Changhyun
    Bahr, Arne
    Swain, Abinash
    Haldar, Rajashi
    Ansari, Mursaleem
    Jasinski, Jerry
    Rajaraman, Gopalan
    Shanmugam, Maheswaran
    Klingeler, Ruediger
    INORGANIC CHEMISTRY, 2022, 61 (01) : 317 - 327
  • [7] Magneto-Structural Correlation of Five-Coordinate Trigonal Bipyramidal High Spin Cobalt(II) Complexes
    Zhang, Peng
    Tian, Yao-Cheng
    Wang, Zhenxing
    Lee, Way-Zen
    Ye, Shengfa
    CHEMISTRY-A EUROPEAN JOURNAL, 2024, 30 (26)
  • [8] Magnetic anisotropy and slow magnetic relaxation of seven-coordinate cobalt(II)-nitrate complexes
    Wang, Jing
    Cui, Hui-Hui
    Zhang, Yi-Quan
    Chen, Lei
    Chen, Xue-Tai
    POLYHEDRON, 2018, 154 : 148 - 155
  • [9] How the spin state tunes the slow magnetic relaxation field dependence in spin crossover cobalt(<sc>ii</sc>) complexes
    Rabelo, Renato
    Toma, Luminita
    Julve, Miguel
    Lloret, Francesc
    Pasan, Jorge
    Cangussu, Danielle
    Ruiz-Garcia, Rafael
    Cano, Joan
    DALTON TRANSACTIONS, 2024, 53 (12) : 5507 - 5520
  • [10] In Situ NMR Search for Spin-Crossover in Heteroleptic Cobalt(II) Complexes
    Pankratova, Yanina
    Aleshin, Dmitry
    Nikovskiy, Igor
    Novikov, Valentin
    Nelyubina, Yulia
    INORGANIC CHEMISTRY, 2020, 59 (11) : 7700 - 7709
12345