Synthesis, Structural Characterization, and Catalytic Property of A Zn(II) Complex with 5-Bromosalicylaldehyde Ligand

Abstract

The study on catalytic activity of complex materials has been one of the hot spots in coordination chemistry. In order to extensively study the catalytic activity of complexes, a new six-coordination Zn(II) complex material, [ZnL2(H2O)2] (C1) (HL = 5-bromosalicylaldehyde), has been prepared with 5-bromosalicylaldehyde, NaOH, and Zn(CH3COO)2·2H2O as raw materials. The structure of C1 was determined by elemental analysis, IR spectra, and single crystal X-ray diffraction. The Zn(II) complex shows a moderate catalytic activity for A 3 coupling reaction of benzaldehyde, piperidine, and phenylacetylene with the benzaldehyde conversion reached 54.6 %. Furthermore, the Zn(II) complex catalyst exhibited 54.8 %, 53.8 %, and 54.4 % conversions of benzaldehyde in the second, third, and fourth cycles, respectively. In addition, the Zn(II) complex features a selectivity of 100 % to the product of propargylamine for the A 3 coupling reaction.

The effect of halogenation of salicylaldehyde on the antiproliferative activities of {Δ/Λ-[Ru(bpy)2(X,Y-sal)]BF4} complexes

“…The stretching frequency for CvO in compounds 1, 2, 3, 4 and 5 occurs at 1600.6, 1579.4, 1584.2, 1583.2 and 1578.4 cm −1 , respectively. 41 The main stretching frequency for the BF 4 anion occurs at 1055.8, 1056.8, 1057.7, 1058.7 and 1054.8 cm −1 for compounds 1, 2, 3, 4 and 5, respectively. 42 All complexes showed well-defined 1 H/ 13 C NMR spectra (Fig.…”

Synthesis, Crystal Structure, Hirschfeld Surface Analysis and Catalytic Activity of a New Binuclear Zn(II) Complex Based on Homophthalic Acid and 2,2'-Bipyridine Ligands

“…Zn(II) complexes have been widely studied by chemists during the past decades. Because they display many potential applications in chemosensor [1], antibacterial activity [2,3], magnetic property [4,5], luminescence [6][7][8][9], nonlinear optical property [10], anticancer activity [11][12][13], electrochemical property [14,15], and catalytic activity such as oxidation of benzyl alcohol [16], chemical fixation of CO2 into cyclic carbonates [17], cyanosilylation of aldehydes [18], decomposition reaction of H2O2 [19], A3 coupling reaction [20], cyanosilylation reaction [21]. Some transition metal complexes of homophthalic acid-based ligand have been synthesized and exhibited excellent properties such as magnetic property and fluorescence property [22], photocatalytic degradation [23], and catalytic oxidation [24].…”

A Ca(II) Coordination Polymer of 2-Carboxybenzaldehyde: Synthesis, Crystal Structure, and Catalytic Activity in Oxidation of Benzyl Alcohol

“…So, the development of environmentally friendly catalysts is very attractive. Our group has been working on the synthesis and catalytic properties of cheap and environmentally friendly catalysts [23][24][25][26][27]. In this paper, we reported a new Ca(II) coordination polymer, [Ca(L) 2 (H 2 O) 2 ] n , and its application in aerobic oxidation of benzyl alcohol as catalyst.…”