Citation: ZHANG Lai-Jun, TONG Ji-Zao, CHEN Fa-Yun, HUANG Hai-Jin, ZOU Ru-Yi, RAO Bo-Bo. Two Cadmium Complexes Constructed from Ethyl 2-Amino-4-thiazoleacetate Ligand:Crystal Structure and Luminescent Properties[J]. Chinese Journal of Inorganic Chemistry, ;2014, 30(3): 550-556. doi: 10.11862/CJIC.2014.056 shu

Two Cadmium Complexes Constructed from Ethyl 2-Amino-4-thiazoleacetate Ligand:Crystal Structure and Luminescent Properties

1.
School of Chemistry and Chemical Engineering, Shangrao Normal University, Shangrao, Jiangxi 334001, China

Received Date: 25 May 2013
Available Online: 30 September 2013
Fund Project: 江西省教育厅科技项目(No.GJJ13711和GJJ10613) (No.GJJ13711和GJJ10613)江西省自然科学基金(No. 20122BAB203002和20132BAB203003) (No. 20122BAB203002和20132BAB203003)江西省科技厅科技计划指导性项目(No. 2012zbbe50006) (No. 2012zbbe50006)

Two cadmium complexes, [CdCl₂(EATA)]_n(1) and [CdCl₂(EATA)₂](2), have been synthesized by the reaction between CdCl₂·2.5H₂O and ethyl 2-amino-4-thiazoleacetate (EATA), and characterized by single-crystal X-ray diffraction, elemental analysis, infrared and photoluminescence spectra. Single crystal X-ray diffraction analysis reveals that, complex 1 crystallizes in monoclinic with space group P2₁/c, a=1.765 1(5) nm, b=0.927 7(3) nm, c=0.715 0(2) nm, β=92.072(5)°, V=1.170 0(6) nm³, Z=4, R₁=0.0363, wR₂=0.0762, S=1.082. The title complex 2 also belongs to the monoclinic system, space group Cc with a=1.686 0(3) nm, b=1.663 0(3) nm, c=1.622 0(3) nm, β=105.41(3)°, V=4.384 3(15) nm³, Z=8, R₁=0.0215, wR₂=0.0483, S=1.021. For either complexes 1 or 2, the central metal ion (Cd₂+) displays a distorted six-coordinated octahedral geometry. In complex 1, two adjacent octahedral units are connected by two bridging μ₂-Cl^- anions, resulting in the formation of one-dimensional chain. These one-dimensional chains are further assembled into a three-dimensional network structure by intermolecular N-H…Cl hydrogen bonds interactions. In complex 2, two-dimensional supramolecular structure is generated via a large number of intermolecular N-H…Cl and C-H…Cl hydrogen bonds. Solid-state photoluminescence spectrum shows that complexes 1 and 2 have similar fluorescence behaviors, and both of which can be attributed to the ligand-to-metal charge transition (LMCT). CCDC: 837325, 1; 837326, 2.
- cadmium complex;synthesis;crystal structure;luminescent property;ethyl 2-amino-4-thiazoleacetate
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沈阳化工大学材料科学与工程学院沈阳 110142