| 金属配位超分子晶体的结构特性及在催化氧化裂解壳聚糖中的应用 |
| The Crystal Structure of Metal Coordination Supermolecular and its using in Catalysis-Oxidation Cleaving Chitosan |
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| 摘要: N，N′-二(2-氨丙基)草酰胺(H2apo)、硫氰酸根与铜(Ⅱ)离子在适宜条件下可通过自组装方式形成配合物 [Cu2(apo)(NCS)2]n，单晶解析结果表明这是一个新型的二维网状结构配位高分子。铜(Ⅱ)由反式双三齿配体apo2-和硫氰酸根通过μ2-SCN的方式共同桥连。研究发现该固体在弱酸性溶液中、过氧化氢存在条件下对壳聚糖(一种氨基多糖)具有催化裂解作用 |
| 关键词: 铜(Ⅱ)配合物 二维网状配位 晶体结构 壳聚糖降解 |
| 基金项目: |
| Abstract: A novel two-dimensional network copper(Ⅱ) complex bridged by N， N′-bis(2-aminopropyl) oxamide dianion (apo) and thiocyanate [Cu(apo)(NCS)2]n has been isolated and characterized by IR， electronic spectra， EPR and X-ray diffraction analysis. The crystal structure belongs to monoclinic， space group P2(1)/c with cell dimensions， a=7.3131(14)， b=10.22860(13)， c=11.199(2)?; β=106.63(2); V=807.2(2)?3， Z=2， F(000)=452， R1=0.0502， wR2=0.1057. The complex shows a pronounced two-dimensional character developing along the a axis. Within the layer the copper(Ⅱ) ions are bridged by both apo2- and NCS-， the former behaving as a bis(tridentate) ligand in a trans conformation whereas the latter bridges the copper centers in asymmetric end-to-end fashion extending along the bc plane to form an infinite network. In this layer， every apo2- links four neighbor apo2-s by hydrogen bonds. The complex could catalysis-oxidation cleaving chitosan as a matrix with H2O2 pre-sented. This method can narrow the molecular weight distribution. |
| Keywords: copper(Ⅱ) complex two-dimensional network crystal structure cleaving chitosan |
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| 陈志利,刘军华,张岐,廖代正,王耕霖,卜卫民.金属配位超分子晶体的结构特性及在催化氧化裂解壳聚糖中的应用[J].无机化学学报,2003,19(1):20-24. |
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