Architectural Isomerism in the Three-Dimensional Polymeric Spin Crossover System {Fe(pmd)2[Ag(CN)2]2}:  Synthesis, Structure, Magnetic Properties, and Calorimetric Studies

2005 ◽  
Vol 44 (24) ◽  
pp. 8749-8755 ◽  
Author(s):  
Ana Galet ◽  
M. Carmen Muñoz ◽  
Ana B. Gaspar ◽  
José A. Real
2013 ◽  
Vol 66 (4) ◽  
pp. 452 ◽  
Author(s):  
Suzanne M. Neville ◽  
Gregory J. Halder ◽  
Keith S. Murray ◽  
Boujemaa Moubaraki ◽  
Cameron J. Kepert

Three-dimensional (3D) framework materials containing the ligands 2,4,6-tris(4′-pyridyl)-1,3,5-triazine (4-tpt) and 2,4,6-tris(3′-pyridyl)-1,3,5-triazine (3-tpt) have been prepared and their structure and magnetic properties investigated. The [MII(NCS)2(py)4] (MII = Fe, Co, py = 3-tpt, and 4-tpt) coordination environments in these materials have been targeted in an effort to prepare high-dimensional coordination polymers which contain spin crossover (SCO) centres. Using FeII, two isotopological cubic 3D materials [Fe(NCS)2(4-tpt)4/3]·n(BzOH,ac) (1a(Bz,ac)) and [Fe(NCS)2(3-tpt)4/3]·n(BzOH,ac) (1b(Bz,ac)) were formed. However, with CoII a different 3D framework topology results, [Co(NCS)2(3-tpt)4/3]·(BzOH,ac) (2(Bz,ac)). Further synthetic variation leads to the isostructural 3D materials trans-[MII(NCS)2(4-tpt)4/3]cis-[MII(NCS)2(4-tpt)2]·n(tce, EtOH) (Fe: 3a(Tce,Et) and Co: 3b(Tce,Et)) which form 3D networks outside Wellsian classification – and for which uniquely both two- and three-connecting modes of 4-tpt are present in the one complex. Despite having the metal coordination environments for which SCO has previously been observed, magnetic susceptibilities of this family of materials reveal a high spin nature.


2021 ◽  
Vol 9 (15) ◽  
pp. 5082-5087
Author(s):  
Yu Gong ◽  
Wang-Kang Han ◽  
Hui-Shu Lu ◽  
Qing-Tao Hu ◽  
Huan Tu ◽  
...  

New Hofmann-type metal–organic frameworks display rare and complete ligand exchange induced single crystal to single crystal transformations from 3D frameworks to 2D layers, accompanied by magnetic properties transition from two-step SCO behavior to hysteretic SCO behavior.


2009 ◽  
Vol 48 (11) ◽  
pp. 4674-4684 ◽  
Author(s):  
Zi-Lu Chen ◽  
Chun-Fang Jiang ◽  
Wei-Hong Yan ◽  
Fu-Pei Liang ◽  
Stuart R. Batten

2007 ◽  
Vol 46 (10) ◽  
pp. 4220-4229 ◽  
Author(s):  
Matthias Bartel ◽  
Alina Absmeier ◽  
Guy N. L. Jameson ◽  
Franz Werner ◽  
Kenichi Kato ◽  
...  

2014 ◽  
Vol 43 (19) ◽  
pp. 7263-7268 ◽  
Author(s):  
Tiffany M. Smith ◽  
Michael Tichenor ◽  
Yuan-Zhu Zhang ◽  
Kim R. Dunbar ◽  
Jon Zubieta

The three-dimensional [Co3(OH)2(H2O)2(aptet)4] exhibits magnetic properties consistent with a ferrimagnetic chain with the non-compensating resultant moment of one Co(ii) per trinuclear Co(ii) subunit and ac magnetic susceptibility indicative of glassy-like magnetic behavior.


2017 ◽  
Vol 96 (6) ◽  
Author(s):  
Laurentiu Stoleriu ◽  
Masamichi Nishino ◽  
Seiji Miyashita ◽  
Alexandru Stancu ◽  
Andreas Hauser ◽  
...  

2013 ◽  
Vol 2 (3) ◽  
pp. Q45-Q49 ◽  
Author(s):  
Wei Li ◽  
Yanchao Mao ◽  
Mingyang Li ◽  
Yiming Li ◽  
Yexiang Tong ◽  
...  

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