Two-dimensional metal-organic framework constructed from 4,4′-bipydine and 1,2,4-benzenetricarboxylate: Synthesis, structure and magnetic properties

✍ Scribed by Lei Wang; Ming Yang; Zhan Shi; Yan Chen; Shouhua Feng

• Book ID: 104029351
• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 660 KB
• Volume: 178
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1016/j.jssc.2005.08.014

✦ Synopsis

Two new copper coordination polymers generated from mixed organic ligands 4,4 0 -bipydine and 1,2,4-benzenetricarboxylate

4-benzenetricarboxylate) have been prepared hydrothermally and characterized by single crystal X-ray diffraction. Compound 1 crystallizes in the noncentrosymmetric space group Fdd2, with a ¼ 19:004ð3Þ ( A, b ¼ 26:711ð4Þ ( A, c ¼ 11:0770ð15Þ ( A, V ¼ 5622:8ð14Þ ( A 3 , and Z ¼ 8. Its structure contains two different onedimensional (1-D) chains for the Cu ions, namely ½Cu 2 ð1; 2; 4 À BTCÞ 2 2nÀ n and ½Cuð4; 4 0 À bipyÞ 2nþ n ; the carboxylate of 1,2,4-BTC ligands links the two different 1-D chains into an interesting steplike neutral framework. Compound 2 crystallizes in the monoclinic space group P2 1 =n, with a ¼ 9:9806ð8Þ, b ¼ 16:5512ð16Þ, c ¼ 11:3109ð7Þ ( A, b ¼ 99:375ð5Þ1, V ¼ 1843:5ð3Þ ( A 3 , Z ¼ 4. Its structure contains novel paddle-wheel clusters Cu 2 (CO 2 ) 4 (4,4 0 -bipy) 2 as SBUs which are further linked by monoprotonated 1,2,4-BTC ligands into a 2-D neutral framework. The magnetic behaviors of both compounds have been studied.