Lanthanide contraction and anion-controlled structure diversity in two types of novel 3d-4f heterometallic coordination polymers: Crystal structure and magnetic properties

作者：Xiong, Gang^*; Qi, Dan; He, Yongke; You, Lixin; Ren, Baoyi; Sun, Yaguang^*

来源：Inorganica Chimica Acta, 2018, 483: 299-304.

DOI：10.1016/j.ica.2018.08.044

• 3d-4f heterometallic coordination polymers
• Interpenetrating structure
• Magnetic properties
• Crystal structure

Solvothermal reactions of isonicotinic acid (HIN) with lanthanide nitrate and cuprous halide yielded seven three-dimensional (3D) 3d-4f heterometallic coordination polymers (HCPs). These HCPs are formulated as {[NH2(CH3)(2)](2)LnCu(2)Br(IN)(6)center dot(DMA)(2)}(n) (Ln = Sm(1), Eu(2), Gd(3), Tb(4), Dy(5)) and [LnCu(IN)(4)center dot DMA](n) (Ln = Er(6), Yb(7)). Compounds 1-5 possess anionic three-dimensional pillared-layer frameworks with pcu topology, while compounds 6-7 show a rare 3d-4f dia-type two-fold interpenetrating framework with one dimensional square channels with side length of about 9.0 angstrom along the a axis. Crystal structure analysis reveals that the structure diversity is attributed to the synergistic effect of lanthanide contraction and halide anions. In addition, the magnetic properties of 1, 3, 4 and 5 were investigated.

• 出版日期2018-11-1
• 单位沈阳化工大学