欢迎访问《人工晶体学报》官方网站,今天是 分享到:

人工晶体学报 ›› 2025, Vol. 54 ›› Issue (11): 1974-1982.DOI: 10.16553/j.cnki.issn1000-985x.2025.0071

• 研究论文 • 上一篇    下一篇

基于手性/消旋配体的金属有机膦酸钴配合物的合成、晶体结构及磁学性能

孙文韬(), 徐艳(), 冯路顺, 孟文清, 郑伟健, 李新星, 李素芝()   

  1. 宿迁学院生物与材料工程学院化学系,宿迁 223800
  • 收稿日期:2025-04-08 出版日期:2025-11-20 发布日期:2025-12-11
  • 通信作者: 徐艳,博士,副教授。E-mail:17101@squ.edu.cn; 李素芝,博士,教授。E-mail:lisuzhi2005@sina.com
  • 作者简介:孙文韬(2004—),男,江苏省人。E-mail:632393680@qq.com
  • 基金资助:
    2024年宿迁学院校级大学生创新创业训练项目(2024XSJ115Y);2024年度优秀毕业论文(设计)培育项目;宿迁市科技计划项目(Z202376);2023年江苏省高校“青蓝工程”中青年学术带头人;2024年宿迁英才雄英计划项目(SQXY202434)

Synthesis, Crystal Structure and Magnetic Properties of Metal Organic Cobalt Phosphonates Complexes Based on Chiral/Racemic Ligands

SUN Wentao(), XU Yan(), FENG Lushun, MENG Wenqing, ZHENG Weijian, LI Xinxing, LI Suzhi()   

  1. Department of Chemistry,School of Biological and Materials Engineering,Suqian University,Suqian 223800,China
  • Received:2025-04-08 Online:2025-11-20 Published:2025-12-11

摘要: 分别从单一手性和消旋配体出发,通过水热反应成功合成一对对映体配合物S/R-[Co6(cpap)4(1,2-dpe)4(H2O)5]·8H2O(S-1或R-1)和消旋配合物rac-[Co3(cpap)2(1,2-dpe)2(H2O)2]·4H2O(rac-2)(SR)-cpapH3=SR)-环己基丙胺酸膦酸,1,2-dpe=1,2-二(4-吡啶基)乙烯)。采用X射线单晶(粉末)衍射、红外光谱、元素分析表征了三个配合物的组成和结构。晶体结构分析表明,对映体(S-1或R-1)和消旋配合物(rac-2)具有相同的三维开放的超分子网络结构。晶体结构中包含由O—P—O桥联的单、双核交替的无机链,每条无机链均由单核钴((P)O—Co—O(P))桥联双核钴八元环(Co2(PO22)组成。相邻的链之间通过氢键连接成二维层状结构,这些层再进一步由辅助配体1,2-dpe交联成三维开放的超分子网络结构。本文还研究了配合物S-1、R-1和rac-2的热稳定性、手性光学活性和磁性质。

关键词: 钴(Ⅱ)配合物; 晶体结构; 手性; 消旋; 磁学性能

Abstract: A pair of enantiomeric complexes with formulas S/R- [Co6(cpap)4(1,2-dpe)4(H2O)5]·8H2O (S-1 or R-1) and related racemic compound rac-[Co3(cpap)2(1,2-dpe)2(H2O)2]·4H2O (rac-2) (1,2-dpe=1,2-di(4-pyridyl)ethylene, S- or R-cpapH3=S- or R-3-cyclohexyl-2-((phosphonomethyl)amino)propanoic acid) were assembled under hydrothermal conditions. The composition and structure of the complexes S-1, R-1 and rac-2 were characterized by X-ray single crystal diffraction, X-ray powder diffraction, infrared spectroscopy, and elemental analysis. Complexes S-1,R-1 and rac-2 show identical three-dimensional open framework structures. The crystal structure contains inorganic chains with alternating mononuclear and dinuclear units bridged by O—P—O linkages. Each chain is composed of dinuclear cobalt eight-membered rings (Co2(PO22) interconnected through mononuclear cobalt ((P)O—Co—O(P)) bridges. Neighboring chains are connected to each other by hydrogen bonds to form 2D layers, which are further cross-linked by the auxiliary ligand 1, 2-dpe to form a 3D supramolecular open network structure. The thermal stability, chiral optical activity and magnetic properties of complexes S-1,R-1 and rac-2 were investigated.

Key words: cobalt (Ⅱ) complex; crystal structure; chirality; racemization; magnetic property

中图分类号: