One-pot synthesis of unexpected nd-containing coordination polymer based on N-phthaloylglycine and benzene-1,2-dicarboxylic acid: syntheses, structure and properties

Luminescent lanthanide mixed N-phthaloylglycinate and terephthalate coordination polymers: Structural and optical properties

A new class of lanthanide mixed-carboxylate ligands compounds with formula {[Ln2 (phthgly)4 (bdc)(H2 O)6 ]·(H2 O)4 }∞ , labelled as Ln3+ : Eu (1) and Gd (2) coordination polymers (CP) were synthesized under mild reaction conditions between lanthanide nitrate salts and a solution of N-phthaloylglycine (phthgly) and terephthalic (bdc) ligands. The (1) and (2) coordination polymers were formed by symmetric binuclear units, in which phthgly and bdc carboxylate ligands are coordinated to the lanthanide ions by different coordination modes. Surprisingly, all organic ligands participate in hydrogen bonding interactions, forming an extremally rigid crystalline structure. The red narrow emission bands from the 5 D0 →7 FJ transitions of the Eu3+ ion show a high colour purity. The intramolecular energy transfer process from L→Eu3+ ion has been discussed. The experimental intensity parameters (Ω2,4 ) reflect lower angular distortion and polarizability of the chemical environment around the metal ion compared with other Eu3+ compounds reported in the literature. This novel class of coordination polymer offers a more attractive platform for developing luminescent functional materials for different applications.

Crystal structure and photoluminescent properties of a new EuIII–phthalate–acetate coordination polymer

The crystal structure of a new one-dimensional [Eu^III(phth)(OAc)(H₂O)] coordination polymer and its room-temperature photoluminescent properties are reported.

A new coordination polymer, poly[(acetato)aqua(μ₃-phthalato)europium(III)], [Eu(C₈H₄O₄)(CH₃O₂)(H₂O)]_n or [Eu^III(phth)(OAc)(H₂O)] (phth²⁻ = phthalate and OAc⁻ = acetate) was synthesized and characterized, revealing it to be a supra­molecular assembly of one-dimensional [Eu^III(phth)(OAc)(H₂O)] chains. Each chain is built up of edge-sharing distorted tricapped trigonal–prismatic TPRS-{Eu^IIIO₉} building motifs and assembled in a regular fashion through hydrogen-bonding and aromatic π–π inter­actions. The fully deprotonated phth²⁻ ligand was shown to be an effective sensitizer, promoting the characteristic ⁵D₀→⁷F_J (J = 1–4) emissions of Eu^III even in the presence of the non-sensitizing OAc⁻ group.

A Nd-containing coordination ploymer: syntheses, crystal structure and application as a nucleating agent for isotactic polypropylene

This coordination polymer can increase the overall crystallization rate and decrease the spherulite size of iPP.