Bridging cobalt-calixarene subunits into a Co₈ entity or a chain with 4,4鈥?bipyridyl

详细信息    查看全文

• 作者：Wei Liu ; Mei Liu ; Shangchao Du ; Yafeng Li ; Wuping Liao
• 关键词：Calixarenes ; Cobalt ; 4 ; 4&prime ; -Bipyridyl ; Metal-organic aggregates ; Solvothermal synthesis
• 刊名：Journal of Molecular Structure
• 出版年：24 February, 2014
• 年：2014
• 卷：1060
• 期：Complete
• 页码：58-62
• 全文大小：1955 K

文摘

Two novel calixarene-based compounds, {[Co₄Cl(TC4A)(HCOO)₃]₂(4,4鈥?bpy)₂} (class="boldFont">CIAC-206) and {[Co₃(H₂O)(SC4A-SO₂)(HCOO)₂]₂(4,4鈥?bpy)}_n (class="boldFont">CIAC-207) (H₄TC4A = p-tert-butylthiacalix[4]arene, SC4A-SO₂ = p-tert-butylsulfonylcalix[4]arene, 4,4鈥?bpy = 4,4鈥?bipyridyl) were synthesized under solvothermal conditions, and characterized by single crystal X-ray diffraction analysis, TG-DSC analysis, elemental analysis and IR spectroscopy. These two structures are featured with isolated Z-shaped Co₈ entities containing two Co₄-TC4A subunits bridged by two parallel 4,4鈥?bpy (class="boldFont">CIAC-206) and some zigzag chains with [Co₃-SC4A-SO₂]₂ dimers bridged by single 4,4鈥?bpy (class="boldFont">CIAC-207), respectively. In order to evaluate their properties, the N₂ sorption behavior and magnetic property were examined.