An unexpected Mn²⁺ linked 1-D zigzag chain compound based on triethanolamine-functionalized hexamolybdoarsenate

Abstract

The first sample of triethanolamine-functionalized hexamolybdoarsenate [(HOCH₂CH₂)₃NH]_n(H₃O)_n[{Mn(H₂O)₂}_0.5Mn(H₂O)₃{HN(CH₂CH₂O)₃As^VMo₆O₂₂}]_n·3.25nH₂O (1) has been synthesized in aqueous solution and characterized by elemental analysis, IR spectroscopy, thermal gravimetric analysis, and single-crystal X-ray diffraction. X-ray analysis showed that a new kind of heteropolyanion [HN(CH₂CH₂O)₃As^VMo₆O₂₂]⁵⁻ is linked by Mn²⁺ ions forming a zig-zag chain. The magnetic properties of 1 have been studied by measuring its magnetic susceptibility from 2.0 to 300.0 K, indicating the existence of antiferromagnetic interactions.

Graphical Abstract

Keywords:

• Hexamolybdoarsenate
• Triethanolamine
• Zig-zag chain
• Manganese ions

Additional information

Funding

Funding. The authors are thankful for the financial support from the Natural Science Foundation of China [grant number 21001021] and [grant number 21273031] and from the Department of Science and Technology of Jilin Province [grant number 201201105], [grant number 20110345], [grant number 20130521024JH], and [grant number 201215171].