TY - JOUR
T1 - Copper Lanthanide Phosphonate Cages
T2 - Highly Symmetric {Cu3Ln9P6} and {Cu6Ln6P6} Clusters with C 3v and D3h Symmetry
AU - Moreno Pineda, Eufemio
AU - Heesing, Christian
AU - Tuna, Floriana
AU - Zheng, Yan Zhen
AU - McInnes, Eric J.L.
AU - Schnack, Jürgen
AU - Winpenny, Richard E.P.
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2015/7/6
Y1 - 2015/7/6
N2 - Two families of copper lanthanide phosphonate clusters have been obtained through reaction of [Cu2(O2CtBu)4(HO2CtBu)2] and either Ln(NO3)3·nH2O or [Ln2(O2CtBu)6(HO2CtBu)6] and tert-butylphosphonic acid or an amino-functionalized phosphonic acid. The clusters, with general formula [Cu(MeCN)4][Cu3Ln9(μ3-OH)7(O3PtBu)6(O2CtBu)15] and [Cu6Ln6(μ3-OH)6(O3PC(NH2)Me2)6(O2CtBu)12], were structurally characterized through single crystal X-ray diffraction and possess highly symmetric metal cores with approximately C3v and D3h point symmetry, respectively. We have investigated the possible application of the isotropic analogues in magnetic cooling, where we were able to observe that up to around 70% of the theoretical magnetic entropy change is obtained. Simulation of the magnetic data shows antiferromagnetic coupling between the spin centers, which explains the magnetic entropy value observed. (Chemical Equation Presented).
AB - Two families of copper lanthanide phosphonate clusters have been obtained through reaction of [Cu2(O2CtBu)4(HO2CtBu)2] and either Ln(NO3)3·nH2O or [Ln2(O2CtBu)6(HO2CtBu)6] and tert-butylphosphonic acid or an amino-functionalized phosphonic acid. The clusters, with general formula [Cu(MeCN)4][Cu3Ln9(μ3-OH)7(O3PtBu)6(O2CtBu)15] and [Cu6Ln6(μ3-OH)6(O3PC(NH2)Me2)6(O2CtBu)12], were structurally characterized through single crystal X-ray diffraction and possess highly symmetric metal cores with approximately C3v and D3h point symmetry, respectively. We have investigated the possible application of the isotropic analogues in magnetic cooling, where we were able to observe that up to around 70% of the theoretical magnetic entropy change is obtained. Simulation of the magnetic data shows antiferromagnetic coupling between the spin centers, which explains the magnetic entropy value observed. (Chemical Equation Presented).
UR - https://www.scopus.com/pages/publications/84936090194
U2 - 10.1021/acs.inorgchem.5b00649
DO - 10.1021/acs.inorgchem.5b00649
M3 - 文章
AN - SCOPUS:84936090194
SN - 0020-1669
VL - 54
SP - 6331
EP - 6337
JO - Inorganic Chemistry
JF - Inorganic Chemistry
IS - 13
ER -