Two Beta-Phosphorylamide Compounds as Ligands for Sm3+, Eu3+, and Tb3+: X-ray Crystallography and Luminescence Properties

Alan R Lear; Jonah Lenters; Michael G Patterson; Richard J Staples; Eric J Werner; Shannon M Biros

doi:10.3390/molecules25132971

Two Beta-Phosphorylamide Compounds as Ligands for Sm³⁺, Eu³⁺, and Tb³⁺: X-ray Crystallography and Luminescence Properties

Molecules. 2020 Jun 28;25(13):2971. doi: 10.3390/molecules25132971.

Authors

Alan R Lear¹, Jonah Lenters¹, Michael G Patterson², Richard J Staples³, Eric J Werner², Shannon M Biros¹

Affiliations

¹ Department of Chemistry, Grand Valley State University, 1 Campus Dr., Allendale, MI 49401, USA.
² Department of Chemistry, Biochemistry and Physics, The University of Tampa, 401 W. Kennedy Blvd., Tampa, FL 33606, USA.
³ Center for Crystallographic Research, Department of Chemistry, Michigan State University, 578 S. Shaw Lane, East Lansing, MI 48824, USA.

Abstract

This paper describes the synthesis of two beta-phosphorylamide ligands and their coordination chemistry with the Ln ions Tb³⁺, Eu³⁺, and Sm³⁺. Both the ligands and Ln complexes were characterized by IR, NMR, MS, and X-ray crystallography. The luminescence properties of the Tb³⁺ and Eu³⁺ complexes were also characterized, including the acquisition of lifetime decay curves. In the solid state, the Tb³⁺ and Sm³⁺ ligand complexes were found to have a 2:2 stoichiometry when analyzed by X-ray diffraction. In these structures, the Ln ion was bound by both oxygen atoms of each beta-phosphorylamide moiety of the ligands. The Tb³⁺ and Eu³⁺ complexes were modestly emissive as solutions in acetonitrile, with lifetime values that fell within typical ranges.

Keywords: X-ray crystallography; carbamoylmethylphosphine oxide (CMPO); lanthanide coordination chemistry; lanthanide luminescence.

MeSH terms

Amides / chemical synthesis*
Amides / chemistry
Coordination Complexes / chemical synthesis*
Coordination Complexes / chemistry
Crystallography, X-Ray
Europium / chemistry*
Ions
Ligands
Luminescence
Models, Molecular
Molecular Structure
Oxygen / chemistry
Samarium / chemistry*
Terbium / chemistry*

Substances

Amides
Coordination Complexes
Ions
Ligands
Terbium
Samarium
Europium
Oxygen

Abstract

MeSH terms

Substances

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