Novel second-harmonic-generation-active lead(ii) phosphinate based on 2-carboxyethyl(phenyl)phosphinate ligand

Abstract

The hydrothermal reaction of PbCl(2) with the achiral 2-carboxyethyl(phenyl)phosphinate ligand (H(2)L) afforded a novel lead(II) phosphinate that contains two enantiomers as a racemic mixture, namely, [Pb(HL)(2)] (Λ- and Δ-1). Each enantiomer features a two-fold symmetrical chiral chain, in which the adjacent Pb(2+) ions are doubly bridged by pairs of HL(-) ligands. The uni-oriented stacking of such 1D chains by edge-to-face π···π interactions results in its crystallization in the chiral C2 space group. Complex 1 shows a second harmonic generation response that is ∼2 times that of KDP (KH(2)PO(4)).

Construction of A sqc6 Topology Ni‐Gd Framework Employing 2,2’‐Phosphinico‐dibenzoate and Oxalate: Structure and Magnetic Properties

“…This shift signifies that the carboxyl groups of the ligand underwent deprotonation and subsequent coordination with the metal ions [32–34] . The strong characteristic peaks in the range of 1384–994 cm −1 and medium peaks in the range of 1044–814 cm −1 are attributed to the functional groups P=O and P−O of the ligand, respectively [35–39] . To check the purity and the formula of compound 1 , elemental analysis was conducted.…”

“…[32][33][34] The strong characteristic peaks in the range of 1384-994 cm À 1 and medium peaks in the range of 1044-814 cm À 1 are attributed to the functional groups P=O and PÀ O of the ligand, respectively. [35][36][37][38][39] To check the purity and the formula of compound 1, elemental analysis was conducted. The result shows that the crystalline compound 1 is pure and its formula is correct.…”