Abstract
The anionic tetra-kis-complex of lanthanum(III) NMe4LaL 4 with the CAPh-ligand dimethyl (2,2,2-tri-chloro-acet-yl)phospho-ramidate (HL), namely, tetra-methyl-ammonium tetra-kis-{2,2,2-tri-chloro-1-[(di-meth-oxy-phosphor-yl)imino]-ethano-lato}lanthanum(III), (C4H12N)[La(C4H6Cl3NO4P)4], has been synthesized, crystallized and structurally characterized by X-ray diffraction. The lanthanide ion is surrounded by four anionic, bis-chelating CAPh ligands forming the complex anion with a coordination number of eight for La3+ and NMe4 + as the counter-ion. The coordination polyhedron of the La3+ ion was inter-preted as a triangular dodeca-hedron.
Highlights
The anionic tetrakis-complex of lanthanum(III) NMe4LaL4 with the CAPhligand dimethyl (2,2,2-trichloroacetyl)phosphoramidate (HL), namely, tetramethylammonium tetrakis{2,2,2-trichloro-1-[(dimethoxyphosphoryl)imino]ethanolato}lanthanum(III), (C4H12N)[La(C4H6Cl3NO4P)4], has been synthesized, crystallized and structurally characterized by X-ray diffraction
The lanthanide ion is surrounded by four anionic, bis-chelating CAPh ligands forming the complex anion with a coordination number of eight for La3+ and NMe4+ as the counter-ion
Use of P,N-substituted analogues of -diketone such as carbacylamidophopsphates (CAPh) (Amirkhanov et al, 2014) with the C(O)NHP(O) structural fragment as ligands is promising because of their powerful chelating properties (Skopenko et al, 2004; Amirkhanov et al, 2014) and ability to sensitize the luminescence of lanthanides (Kariaka et al, 2016; Pham et al, 2017; Kariaka et al, 2018)
Summary
Considerable interest in the luminescence properties of lanthanide coordination compounds results from their potential applications in modern technologies and medicine (Eliseeva et al, 2010; Kido et al, 2002; Tsukube et al, 2002). Use of P,N-substituted analogues of -diketone such as carbacylamidophopsphates (CAPh) (Amirkhanov et al, 2014) with the C(O)NHP(O) structural fragment as ligands is promising because of their powerful chelating properties (Skopenko et al, 2004; Amirkhanov et al, 2014) and ability to sensitize the luminescence of lanthanides (Kariaka et al, 2016; Pham et al, 2017; Kariaka et al, 2018). The synthesis and crystal structure of the anionic tetrakis-complex of lanthanum(III) containing the CAPh-ligand dimethyl (2,2,2-trichloroacetyl)phosphoramidate and a tetramethylammonium cation (formula NMe4LaL4) is reported.
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