Mao Yimin, Zavalij Peter Y
Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA.
Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA.
Acta Crystallogr C Struct Chem. 2018 Dec 1;74(Pt 12):1719-1724. doi: 10.1107/S2053229618015759. Epub 2018 Nov 22.
Two Zn-based coordination polymers (CPs) were synthesized by the hydrothermal method, using Zn(NO)·6HO and furan-2,5-dicarboxylic acid (FDCA) in dimethylformamide (DMF) solvent, at 95 °C. Poly[tetrakis(dimethylazanium) [tetrakis(μ-furan-2,5-dicarboxylato-κO:O)dizinc(II)]], {(CHN)[Zn(CHO)]} or {[DMA][Zn(FDC)]} (DMA = dimethylazanium and FDC = furan-2,5-dicarboxylate), (1), was obtained with a 1:1 molar ratio of Zn and FDCA. It crystallized in the monoclinic space group C2/c. Coordinated by Zn ions, FDC ligands form 2 double-stranded helices propagating along the b axis. The helices are interconnected and extend laterally in the a direction, forming a two-dimensional (2D) sheet-like network. The 2D sheets are stacked along the c direction without interconnections. DMA cations are cocrystallized in (1) and are hydrogen bonded with carboxylate O atoms of the FDC ligands. The hydrogen-bonding pattern consists of R(4) and R(10) motifs alternating in a chain. Poly[bis(dimethylazanium) [bis(μ-furan-2,5-dicarboxylato-κO:κO:κO:κO)bis(μ-furan-2,5-dicarboxylato-κO:κO:κO)dizinc(II)] dimethylformamide 3.08-solvate], {(CHN)[Zn(CHO)]·3.08CHNO} or {[DMA][Zn(FDC)]·3.08DMF}, (2), was obtained with a 1:2 molar ratio of Zn and FDCA. It crystallized in the monoclinic space group P2/c, forming a three-dimensional network. The pores are filled with DMA cations and DMF solvent molecules.
采用水热法，以硝酸锌六水合物（Zn(NO)·6HO）和呋喃 - 2,5 - 二羧酸（FDCA）为原料，在二甲基甲酰胺（DMF）溶剂中于95℃合成了两种锌基配位聚合物（CPs）。以1:1的锌与FDCA摩尔比得到了聚[四（二甲基铵）[四（μ - 呋喃 - 2,5 - 二羧基 - κO:O）二锌（II）]]，{(CHN)[Zn(CHO)]} 或 {[DMA][Zn(FDC)]}（DMA = 二甲基铵，FDC = 呋喃 - 2,5 - 二羧酸盐），（1）。它结晶于单斜空间群C2/c。FDC配体由锌离子配位，形成沿b轴延伸的2条双链螺旋。这些螺旋相互连接并在a方向横向延伸，形成二维（2D）片状网络。二维片层沿c方向堆叠且无相互连接。DMA阳离子在（1）中共结晶，并与FDC配体的羧酸根O原子形成氢键。氢键模式由链中交替的R(4)和R(10)基序组成。以1:2的锌与FDCA摩尔比得到了聚[双（二甲基铵）[双（μ - 呋喃 - 2,5 - 二羧基 - κO:κO:κO:κO）双（μ - 呋喃 - 2,5 - 二羧基 - κO:κO:κO）二锌（II）]二甲基甲酰胺3.08溶剂合物]，{(CHN)[Zn(CHO)]·3.08CHNO} 或 {[DMA][Zn(FDC)]·3.08DMF}，（2）。它结晶于单斜空间群P2/c，形成三维网络。孔中填充有DMA阳离子和DMF溶剂分子。
