School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
Dalton Trans. 2012 Apr 14;41(14):4020-6. doi: 10.1039/c2dt12055k. Epub 2012 Feb 3.
Five new metal-organic frameworks prepared from the ligand 5-bis(3-(1-imidazolyl)propylcarbamoyl)terephthalate (bipta(2-)) and transition metal salts, Zn(2+) (1), Co(2+) (2), Mn(2+) (3, 4) and Cu(2+) (5), are reported. Single crystal X-ray studies reveal that the bipta(2-) ligand acts as a tetradentate ligand and combines with four-coordinate cationic metal nodes to give four-connected framework structures. Whilst reaction of bipta(2-) with Zn(II) gives rise to a framework of diamondoid topology 1, the analogous frameworks with Co(II), Mn(II) and Cu(II) afford frameworks that incorporate square-planar nodes. Whereas 2 and 5 form frameworks of Cd(SO(4)) (cds) and square 4(4) nets (sql), respectively, reaction of Mn(II) with bipta(2-) forms two supramolecular isomers of topology cds for 3 and sql for 4.
本文报道了由配体 5-双(3-(1-咪唑基)丙基氨甲酰基)对苯二甲酸酯(bipta(2-))和过渡金属盐 Zn(2+) (1)、Co(2+) (2)、Mn(2+) (3、4)和 Cu(2+) (5)制备的五个新的金属有机骨架。单晶 X 射线研究表明，bipta(2-)配体作为四齿配体，与四配位阳离子金属节点结合，形成四连接的骨架结构。虽然 bipta(2-)与 Zn(II)的反应产生了具有金刚石拓扑结构的 1 的骨架，但类似的 Co(II)、Mn(II)和 Cu(II)的骨架则包含平面正方形节点。虽然 2 和 5 分别形成了 Cd(SO(4))(cds)和正方形 4(4)网(sql)的骨架，但 Mn(II)与 bipta(2-)的反应则形成了拓扑 cds 的两个超分子异构体 3 和 sql 的 4。
