Six low-dimensional silver(I) coordination complexes derived from 2-aminobenzonitrile and carboxylates

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• 作者：Di Sun¹ ; Fu-Jing Liu¹ ; Hong-Jun Hao ; Yun-Hua Li ; Rong-Bin Huang ; ^{rbhuang@xmu.edu.cn} ; Lan-Sun Zheng
• 关键词：Silver ; 2-Aminobenzonitrile ; Carboxylate ; Crystal structure ; Luminescence
• 刊名：Inorganica Chimica Acta
• 出版年：2012
• 期刊代码：40_00201693
• 类别：ch
• 出版时间：30 May, 2012
• 卷：387
• 期：Complete
• 页码：271-276
• 文件大小：701 K

摘要

Six new Ag(I) coordination complexes, [Ag(abn)(4-cba)]₂ (1), [Ag(abn)(3-cba)]₂ (2), [Ag(abn)(fba)]₂ (3), [Ag(abn)(3-mba)]₂ (4), [Ag(abn)(moba)]₂ (5), [Ag(abn)₂(4-mba)]_n (6), (abn = 2-aminobenzonitrile, 4-cbaH = 4-chlorobenzoic acid, 3-cbaH = 3-chlorobenzoic acid, Hfba = 3-fluorobenzoic acid, 3-mbaH = 3-methylbenzoic acid, Hmoba = 2-methoxybenzoic acid and 4-mbaH = 4-methylbenzoic acid), have been synthesized and characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. Complexes 1-4 are similar discrete binuclear Ag(I) motif containing monodentate 渭₁-N_amino abn and 渭₂-畏¹:畏¹ carboxylates. The complementary N_amino-H鈰疦_cyano hydrogen bonds link the binuclear motifs into 1D chain which is further extended into 2D supramolecular sheet by N_amino-H鈰疧_carboxyl hydrogen bonds. Notably, the electronic effect of substituents in 1-4 has deeply influence on the Ag鈰疉g interaction. Complex 5 is also a discrete binuclear Ag(I) motif but contains a monodentate 渭₁-N_cyano abn ligand. The 1D chain was observed in complex 6 where two different abn ligands with 渭₁-N_cyano and 渭₂-N_cyano, N_amino coordination modes coexist and 4-mba is a chelating 渭₁-畏¹:畏¹ ligand. The results show that the different structures are predominantly attributed to the various ancillary carboxylate ligands and diverse coordination modes of abn ligand. Moreover, the emissive behaviors of them are discussed.