An open chain carboxyethyltin functionalized sandwich-type tungstophosphate based on a trivacant Dawson subunit: synthesis, characterization and properties

作者：Bai, Jian-Ping; Su, Fang; Zhu, Hao-Tian; Sun, Hang; Zhang, Lan-Cui^*; Liu, Mei-Ying; You, Wan-Sheng; Zhu, Zai-Ming

来源：Dalton Transactions, 2015, 44(14): 6423-6430.

DOI：10.1039/c5dt00361j

• CRYSTAL-STRUCTURE
• HETEROPOLYTUNGSTATE DERIVATIVES
• MAGNETIC-PROPERTIES
• W-183 NMR
• MN-II
• NI-II
• POLYOXOMETALATE
• KEGGIN
• POLYOXOTUNGSTATE
• COMPLEXES

A Dawson sandwich-type polyoxometalate {C(NH2)(3)}(12)H-4[alpha beta beta alpha-{(Sn(C3H4O2))(2)Mn-2(P2W15O56)(2)}]center dot 22H(2)O (abbreviated as SnR-Mn-P2W15), functionalized by open chain carboxyethyltin groups, was first prepared in aqueous solution under conventional reaction conditions, and then structurally characterized by physicochemical and spectroscopic methods. Single crystal X-ray diffraction analysis revealed that two Mn2+ cations and two [Sn(CH2CH2COO)](2+) groups are located in the internal and external positions in the so-called equatorial region of SnR-Mn-P2W15, respectively. Intriguingly, two exposed carboxyl groups act as stretching-arm brackets, which provide a favorable structure for potential further functionalization. The electrocatalytic activity of SnR-Mn-P2W15 towards the reduction of hydrogen peroxide and nitrite was studied. Additionally, its acid catalysis and oxidation catalysis activities in organic synthesis were investigated.

• 出版日期2015
• 单位辽宁师范大学