Gui-Lin Zhuang

Temperature-dependent conductivity of Emim(+) (Emim(+)=1-ethyl-3-methyl imidazolium) confined in channels of a metal-organic framework

A 3D metal-organic framework, featuring three kinds of cation channels, was obtained through an ionothermal reaction. Investigation on its temperature-dependent conductivity indicates the contribution of order and disorder of the Emim(+) (Emim(+) = 1-ethyl-3-methyl imidazolium bromide) in the channel to its conductivity.

Two Three-Dimensional 2p−3d−4f Heterometallic Frameworks Featuring a Ln6Cu24Na12 Cluster as a Node

Two three-dimensional 2p-3d-4f heterometallic frameworks featuring a nanosized Ln(6)Cu(24)Na(12) (Ln = Gd, Dy) cluster as a node have been obtained under microwave irradiation conditions through the reaction of H(2)ANMA (H(2)ANMA = L-alanine-N-monoacetic acid), Cu(NO(3))(2), and Ln(NO(3))(3) (Ln = Gd for 1, Dy for 2) with NaOH in deionized water. Investigations on the magnetic properties show that 1 exhibits ferrimagnetic behavior. The electrical conductivity measurements reveal that 1 behaves as a proton conductor.

Effect of lanthanide contraction on crystal structures of lanthanide coordination polymers with 2,5-piperazinedione-1,4-diacetic acid

A series of lanthanide coordination polymers have been synthesized through the hydrothermal reaction of 2,5-piperazinedione-1,4-diacetic acid (H2PODC) and Ln(NO3)3 (Ln = La, 1; Pr, 2; Sm, 3; Ho, 4 and Er, 5). Crystal structure analysis reveals that their structural variations are attributed to the effect of lanthanide contraction.

Magnetic and thermal properties of three ionothermally synthesized metal–carboxylate frameworks of [M3(ip)4][EMIm]2 (M = Co, Ni, Mn, H2ip = isophthalic acid, EMIm = 1-ethyl-3-methyl imidazolium)

Three metal-organic frameworks, [M(3)(ip)(4)][EMIm](2) (M = Co 1, Ni 2, Mn 3, H(2)ip = isophthalic acid, EMIm = 1-ethyl-3-methyl imidazolium) were prepared from an ionic liquid medium. All the compounds feature the same (4(24))(6(4)) topology based on linear trinuclear clusters as eight-connected nodes. Compounds 1 and 2 are isostructural, while compound 3 exhibits a different structure due to the slight difference in the arrangement of M(3)(OOCR)(8) SBUs. Magnetic property measurements reveal that all the compounds display anti-ferromagnetic coupling, where compounds 2 and 3 show isotropic exchange interactions of -0.10 cm(-1) for 2 and -1.6 cm(-1) for 3. Investigation of the thermal diffusivity shows that the thermal diffusivity of 1 is higher than that of 3, while that of 3 is higher than that of 2.

The synthesis of a 3d–4f polynuclear metal cluster under microwave irradiation: crystal structure and magnetic property of [La3Ni6(IDA)6(OH)6(H2O)12]·3NO3·15H2O (IDA = iminodiacetate)

A cage-shaped 3d-4f heterometallic ferromagnetic cluster, consisting of six Ni(ii) and three La(iii) ions, was synthesized by microwave irradiation. The magnetic susceptibilities of the cluster were fitted with the help of the program MAGPACK, revealing that the magnetic exchange in the cluster is closely related to the coordination mode and spatial distribution between the metal ions.

CCDC 857677: Experimental Crystal Structure Determination

Related Article: Han Zhang, Gui-Lin Zhuang, Xiang-Jian Kong, Yan-Ping Ren, La-Sheng Long, Rong-Bin Huang, and Lan-Sun Zheng|2013|Cryst.Growth Des.|13|2493|doi:10.1021/cg400206s