Synthesis, Structure and Properties of a Cadmium (Ⅱ) Complex

Abstract

Abstract: In this paper, a new cadmium complex [Cd₂(hebimc)₂(hex)]·2H₂O was synthesized using 2-hydroxybenzimidazole-5-carboxylic acid (Hhebimc), hexadiic acid (H₂hex) and Cd(NO₃)₂·6H₂O as raw materials. The complex was characterized by X-ray single crystal diffraction, elemental analysis, infrared spectrum, TG, XRD and fluorescence spectrum. The single crystal X-ray diffraction results show that the complex is triclinic, the space group is P1, the central Cd(Ⅱ) has a distorted octahedral configuration, the crystal cell parameters are a=0.860 33(15) nm, b=0.906 59(16) nm, c=1.012 03(18) nm, α=74.826(3)°, β=73.131(3)°, γ=85.128(3)°, V=0.729 0(2)nm³, which is a coordination polymer with three-dimensional supermolecular framework. Fluorescence spectrum analysis shows that the complex has similar luminescent properties to the free ligand.

Key words: 2-hydroxyethyl benzimidazole-5-carboxylic acid, adipic acid, Cd(Ⅱ) complex, crystal structure, luminescent property

CLC Number:

O641

WU Guoyun, LIU Dan, WEI Dongmei. Synthesis, Structure and Properties of a Cadmium (Ⅱ) Complex[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2022, 51(2): 304-308.

References

[1] BATTEN S R, NEVILLE S M, TURNER D R. Coordination polymers: design, analysis and application, chap. 10 (royal society of chemistry[EB/OL]. 2009
[2] SPOKOYNY A M, KIM D, SUMREIN A, et al. Infinite coordination polymer nano- and microparticle structures[J]. Chemical Society Reviews, 2009, 38(5): 1218-1227.
[3] ZHANG Y B, ZHANG W X, FENG F Y, et al. A highly connected porous coordination polymer with unusual channel structure and sorption properties[J]. Angewandte Chemie International Edition, 2009, 48(29): 5287-5290.
[4] LIU Z, CHEN Y, LIU P, et al. Cadmium(Ⅱ) and cobalt(Ⅱ) complexes generated from benzimidazole-5-carboxylate: self-assembly by hydrogen bonding and π-π interactions[J]. Journal of Solid State Chemistry, 2005, 178(7): 2306-2312.
[5] WU G Y, REN Y X, YIN Z, et al. Effects of substituent groups on the structures and luminescence properties of 2D/3D CdII complexes with mixed rigid and flexible carboxylate ligands[J]. RSC Adv, 2014, 4(46): 24183-24188.
[6] YAO Y L, CHE Y X, ZHENG J M. Structural and fluorescent characterizations of one- and two-dimensional Cd(Ⅱ) metal-organic frameworks[J]. Inorganic Chemistry Communications, 2008, 11(8): 883-885.
[7] GUO Z G, LI X J, GAO S Y, et al. A new three-dimensional supramolecular network, [Cd(Hbic)₂(H₂O)]·(4, 4′-bpy)·H₂O (H₂bic=1-H-benzimidazole-5-carboxylic acid; 4, 4′-bpy=4, 4′-bipyridine): synthesis, crystal structure and luminescence property[J]. Journal of Molecular Structure, 2007, 846(1/2/3): 123-127.
[8] 伍国云,申扬帆.基于苯并咪唑-5-羧酸和己二酸配体配位聚合物的合成与结构研究[J].分子科学学报,2018,34(5):392-396+7.
WU G Y, SHEN Y F. Synthesis and structural study of the coordination polymers based on benzimidazole-5-carboxylic acid and hexanedioic acid[J]. Journal of Molecular Science, 2018, 34(5): 392-396+7(in Chinese).
[9] 伍国云.2-羟乙基-苯并咪唑-5-羧酸的合成与表征[J].广东化工,2014,41(6):88-89.
WU G Y. Preparation and characterization of 2-hydroxyethyl-benzimidazole-5-carboxylic acid[J]. Guangdong Chemical Industry, 2014, 41(6): 88-89(in Chinese).
[10] SHELDRICK M. SHELXS-97, Program for crystal structure solution[EB/OL]. 1990.
[11] SHELDRICK G M. SHELXL-97, Program for crystal structure refinement, University of Göttingen, Germany, 1997.
[12] 刘艺蕊,段敏娜,顾希煊,等.一例镉(Ⅱ)配合物的合成、结构及发光性质研究[J].人工晶体学报,2021,50(6):1044-1048.
LIU Y R, DUAN M N, GU X X, et al. Synthesis, structure and luminescent properties of a Cd(Ⅱ) coordination compound[J]. Journal of Synthetic Crystals, 2021, 50(6): 1044-1048(in Chinese).
[13] 程芳芳,胡甍,黄荣谊,等.配合物[Cd₂L₂Cl₂]·5H₂O的合成、结构和荧光性质[J].安庆师范大学学报(自然科学版),2021,27(2):70-73+108.
CHENG F F, HU M, HUANG R Y, et al. Synthesis, crystal structure and fluorescence properties of coordination polymer [Cd₂L₂Cl₂]·5H₂O[J]. Journal of Anqing Normal University (Natural Science Edition), 2021, 27(2): 70-73+108(in Chinese).
[14] ZENG M H, FENG X L, ZHANG W X, et al. A robust microporous 3D cobalt(Ⅱ) coordination polymer with new magnetically frustrated 2D lattices: single-crystal transformation and guest modulation of cooperative magnetic properties[J]. Dalton Transactions, 2006(44): 5294-5303.
[15] 徐衡,桂乃成,严达,等.新型镉(Ⅱ)配合物荧光探针的合成及性能[J].人工晶体学报,2021,50(6):1049-1055.
XU H, GUI N C, YAN D, et al. Synthesis and properties of a novel cadmium(Ⅱ) complex-based luminescent probe[J]. Journal of Synthetic Crystals, 2021, 50(6): 1049-1055(in Chinese).