Enhancing the Magnetic Anisotropy of Linear Cr(II) Chain Compounds Using Heavy Metal Substitutions.
作者： Jonathan H. Christian , David W. Brogden , Jasleen K. Bindra , Jared S. Kinyon , Johan van Tol
DOI: 10.1021/ACS.INORGCHEM.5B02545
关键词:
摘要: Magnetic properties of the series three linear, trimetallic chain compounds Cr2Cr(dpa)4Cl2, 1, Mo2Cr(dpa)4Cl2, 2, and W2Cr(dpa)4Cl2, 3 (dpa = 2,2′-dipyridylamido), have been studied using variable-temperature dc ac magnetometry high-frequency EPR spectroscopy. All possess an S 2 electronic ground state arising from terminal Cr2+ ion, which exhibits slow magnetic relaxation under applied field, as evidenced by susceptibility magnetization measurements. The stems existence easy-axis anisotropy, is bolstered axial symmetry has quantified through rigorous magnitude D in these increases when heavier ions are substituted into chain; thus −1.640, −2.187, −3.617 cm–1 for respectively. Additionally, value measured W2Cr(dpa)4Cl2 largest y...
acs.org
cheric.org参考文章(67)
Marie-Madeleine Rohmer, Marc Bénard, Structural Versatility in Polyoxometalates and in Some Linear Trimetallic Complexes: An Electronic Interpretation Journal of Cluster Science. ,vol. 13, pp. 333- 353 ,(2002) , 10.1023/A:1020546915168
R. Blinc, P. Cevc, A. Potočnik, B. Žemva, E. Goreshnik, D. Hanžel, A. Gregorovič, Z. Trontelj, Z. Jagličič, V. Laguta, M. Perović, N. S. Dalal, J. F. Scott, Magnetic properties of multiferroic K3Cr2Fe3F15 Journal of Applied Physics. ,vol. 107, pp. 043511- ,(2010) , 10.1063/1.3309205
Jingfang Wang, Andrew Ozarowski, Kirill Kovnir, Corey M. Thompson, Alexander A. Yaroslavtsev, Roman V. Chernikov, Naresh S. Dalal, Michael Shatruk, Trimetallic [M3(dpa)4]2+ Complexes (M = Co, Ni) as Building Blocks for Cyano‐Bridged Coordination Polymers European Journal of Inorganic Chemistry. ,vol. 2012, pp. 4652- 4660 ,(2012) , 10.1002/EJIC.201200274
Noureddine Benbellat, Marie-Madeleine Rohmer, Marc Bénard, Electronic origin of the structural versatility in linear trichromium complexes of dipyridylamide. Chemical Communications. pp. 2368- 2369 ,(2001) , 10.1039/B106100N
Rodolphe Clérac, F. Albert Cotton, Stephen P. Jeffery, Carlos A. Murillo, Xiaoping Wang, Compounds with symmetrical tricobalt chains wrapped by dipyridylamide ligands and cyanide or isothiocyanate ions as terminal ligands. Inorganic Chemistry. ,vol. 40, pp. 1265- 1270 ,(2001) , 10.1021/IC001069A
John F. Berry, F. Albert Cotton, Tongbu Lu, Carlos A. Murillo, Brian K. Roberts, Xiaoping Wang, Molecular and Electronic Structures by Design: Tuning Symmetrical and Unsymmetrical Linear Trichromium Chains Journal of the American Chemical Society. ,vol. 126, pp. 7082- 7096 ,(2004) , 10.1021/JA049055H
Christopher Dobe, Thierry Strässle, Fanni Juranyi, Philip L. W. Tregenna-Piggott, Pressure-induced switch of the direction of the unique Jahn-Teller axis of the chromium(II) hexaqua cation in the deuterated ammonium chromium Tutton salt. Inorganic Chemistry. ,vol. 45, pp. 5066- 5072 ,(2006) , 10.1021/IC060187G
John F. Berry, F. Albert Cotton, Carlos A. Murillo, Brian K. Roberts, An Efficient Synthesis of Acetylide/Trimetal/Acetylide Molecular Wires Inorganic Chemistry. ,vol. 43, pp. 2277- 2283 ,(2004) , 10.1021/IC0354320
S. Nellutla, K.-Y. Choi, M. Pati, J. van Tol, I. Chiorescu, N. S. Dalal, Coherent manipulation of electron spins up to ambient temperatures in Cr5+ (S = 1/2) doped K3NbO8. Physical Review Letters. ,vol. 99, pp. 137601- 137601 ,(2007) , 10.1103/PHYSREVLETT.99.137601
Frank Neese, Dimitrios A. Pantazis, What is not required to make a single molecule magnet. Faraday Discussions. ,vol. 148, pp. 229- 238 ,(2011) , 10.1039/C005256F