Coordination compounds based on CAPh type ligand: synthesis, structural characteristics and luminescence properties of tetrakis-complexes CsLnL₄ with dimethylbenzoylamidophosphate

Abstract

Searching for prospective luminescent materials, the series of new lanthanide coordination compounds CsLnL₄ (Ln = La, Pr, Nd, Sm – Er, and Yb; L⁻ = {C₆H₅CONPO(OCH₃)₂}^-) was synthesized. X-ray diffraction studies of CsNdL₄ and CsYbL₄ have been performed establishing polymeric structures of the tetrakis-complexes built from [LnL₄]⁻ anions and cesium cations functioning as linkers. The IR, absorption, emission, excitation spectra, and decay time measurements at 298 and 77 K, as well as thermal gravimetric analyses, were used to characterize the complexes.

Keywords:

• Carbacylamidophosphates
• lanthanides
• luminescence
• tetrakis-complexes
• crystal structure

Acknowledgements

Authors would like to thank Dr. T.G. Verbetskaya (Kyiv National Taras Shevchenko University) for providing thermal gravimetric investigations.

Disclosure statement

No potential conflict of interest was reported by the authors.

Funding

This work was supported by the Ukrainian State funding [project number 11BF037-01].