Synthesis, Structure, and Dye Adsorption Properties of a Nickel(II) Coordination Layer Built from d-Camphorate and Bispyridyl Ligands

Abstract

(1), under hydro(solvo)thermal conditions. Single-crystal X-ray structure analysis reveals that 1 adopts a six-connected two-dimensional (2D) chiral layer structure with 3 6 -hxl topology. Dye adsorption explorations indicate that 1 readily adsorbs methyl blue (MyB) from water without destruction of crystallinity. On the contrary, methyl orange (MO) is not adsorbed at all. The pseudo-second-order kinetic model could be used to interpret the adsorption kinetics for MyB. Equilibrium isotherm studies suggest complicated adsorption processes for MyB which do not have good applicability for either the two-parameter Langmuir or Freundlich isotherm model. The saturated adsorption capacity of 1 for MyB calculated by Langmuir is 185.5 mg·g −1 at room temperature.

Ag(I) and Hg(II) Coordination Polymers Decorated from Fully Benzimidazole Substituted Cyclotriphosphazene Ligand and Adsorption Behaviour Against Methylene Blue

“…Although activated carbon is a good adsorbent, it comes with expensive costs during application [1][2][3][4][5][6][7][8][9]. Coordination polymers, which have become more popular in recent years, have been looked into for a wide range of uses, such as adsorption [10][11][12][13][14]. Hexachlorocyclotriphosphazene, N 3 P 3 Cl 6 , has served as an important starting building block for various cyclotriphosphazene derivatives.…”

Anion-Dominated Copper Salicyaldimine Complexes—Structures, Coordination Mode of Nitrate and Decolorization Properties toward Acid Orange 7 Dye

“…In recent years, our group has reported several transition metal complexes of salicyaldimine Schiff base ligands with NO and N 2 O donor sets, which have represented mononuclear molecular structures and one- and two-dimensional periodical structures (1D chain and 2D layer) with interesting structural and photophysical properties [ 14 , 32 , 33 ]. Further, our group has also contributed efforts in the decolorization of aqueous solutions of organic dyes through the adsorptive removal process [ 34 , 35 , 36 , 37 ]. As a continuation, we report herein the synthesis and structures of two new Cu(II)−salicylaldimine complexes, [Cu(HL salpyca )Cl] ( 1 , H 2 L salpyca = 3-tert-butyl-4-hydroxy-5-(((pyridin-2-ylmethyl)imino)methyl)benzoic acid) and [Cu(HL salpyca )(NO 3 )] n ( 2 ).…”

A Nonlinear Optically Active Bismuth–Camphorate Coordination Polymer

“…A well‐known strategy for engineering chiral CPs consists of using chiral ligands, whose “push‐pull” effect becomes cumulative through the multiple coordination to metal centers . In that respect, camphoric acid (or 1,2,2‐trimethylcyclopentane‐1,3‐dicarboxylic acid) seems to be a good candidate to be used as organic spacer for synthesis of CPs since it presents: (i) two complexing carboxylate groups, able to coordinate cations and form multidimensional CPs, as it has been already proven, aiming the preparation of multidimensional organic–inorganic hybrid materials; (ii) conformational rigidity due to the presence of five‐membered aliphatic ring; (iii) a relative low‐cost (produced by oxidizing the naturally occurring camphor with nitric acid), envisaging large scale synthetic approaches; (iv) an environmentally friendly character, with potential therapeutic effects (antiseptic, osteoblastic differentiation, antitumor); and (v) a chiral nature, essential to build up noncentrosymmetric materials.…”