A double phosphabetaine formed from 1,3,5-triaza-7-phosphaadamantane (PTA) with acetylenedicarboxylic acid and its Ag(CF₃SO₃)-based coordination polymer

Abstract

The adduct of acetylenedicarboxylic acid and the water-soluble 1,3,5-triaza-7-phosphaadamantane (PTA, 1) in 1:2 molar ratio, was synthesized both in aqueous solution and under anhydrous conditions in a planetary ball mill (pbm). The resulting double phosphabetaine (2) was characterized by ¹H-, ¹³C-, and ³¹P-NMR spectroscopy, ESI-mass spectroscopy, and elemental analysis, furthermore, its solid-state structure was determined by single crystal X-ray diffraction. SXRD also revealed that in aqueous solution 2 reacted with AgSO₃CF₃ to yield a 2 D polymer.

Graphical Abstract

Keywords:

• 1,3,5-triaza-7-phosphaadamantane
• acetylenedicarboxylic acid
• coordination polymer
• mechanochemistry
• phosphonium salt
• water

Additional information

Funding

The financial support of the Hungarian National Research, Development and Innovation Office (FK-128333) is greatly acknowledged. Project no. TKP2020-NKA-04 has been implemented with the support provided from the National Research, Development and Innovation Fund of Hungary, financed under the 2020-4.1.1-TKP2020 funding scheme. The research was supported by the EU and co-financed by the European Regional Development Fund under the projects GINOP-2.3.3-15-2016-00004 and GINOP 2.3.2-15-2016-00008.