Synthesis, Crystal Structure, and Spectra Properties of the Cadmium (II) Complex with Bis(N-allylbenzimidazol-2-ylmethyl)benzylamine

A novel complex of cadmium (II) picrate (pic) with V-shaped ligand bis(N-allylbenzimidazol-2-ylmethyl)benzylamine (babb), with composition [Cd(babb)2](pic)2, was synthesized and characterized by elemental analyses and electrical conductivity, IR, and UV/visible spectra. The crystal structure of the complex has been determined by the single-crystal X-ray diffraction. In the complex, the coordination sphere around Cd (II) is distorted octahedral, six nitrogen atoms involved in coordination afforded by two tridentate ligand babb. Moreover, The DNA-binding properties of the ligand babb and Cd (II) complex were investigated by spectrophotometric methods and viscosity measurements, and the results suggest that they bind to DNA via an intercalation binding mode, and the Cd (II) complex shows higher affinity than the ligand

Synthesis and Characterization of the Ligand Based on Benzimidazole and Its Copper Complex: DNA Binding and Antioxidant Activity

A new copper(II) complex with formulae of [Cu(buobb)2](pic)2, where buobb stands for the ligand of 1,3-bis(1- butylbenzimidazol-2-yl)-2-oxopropane and pic represents 2,4,6-trinitrophenol, has been synthesized and characterized by elemental analyses, molar conductivity, IR, UV-Vis spectra measurements, and cyclic voltammetry. The crystal structure of the copper(II) complex has been determined by X-ray single-crystal diffraction. The coordination environment around each copper(II) atom can be described as a distorted octahedral geometry. The π-π stacking interactions link the copper(II) complex into a 1D infinite network. The interactions of the ligand and the copper(II) complex with calf thymus DNA (CT-DNA) are investigated by using electronic absorption titration, ethidium bromide-DNA displacement experiments, and viscosity measurements. Additionally, the copper(II) complex's antioxidant properties have been investigated in vitro

Towards Blind Watermarking: Combining Invertible and Non-invertible Mechanisms

Blind watermarking provides powerful evidence for copyright protection, image authentication, and tampering identification. However, it remains a challenge to design a watermarking model with high imperceptibility and robustness against strong noise attacks. To resolve this issue, we present a framework Combining the Invertible and Non-invertible (CIN) mechanisms. The CIN is composed of the invertible part to achieve high imperceptibility and the non-invertible part to strengthen the robustness against strong noise attacks. For the invertible part, we develop a diffusion and extraction module (DEM) and a fusion and split module (FSM) to embed and extract watermarks symmetrically in an invertible way. For the non-invertible part, we introduce a non-invertible attention-based module (NIAM) and the noise-specific selection module (NSM) to solve the asymmetric extraction under a strong noise attack. Extensive experiments demonstrate that our framework outperforms the current state-of-the-art methods of imperceptibility and robustness significantly. Our framework can achieve an average of 99.99% accuracy and 67.66 dB PSNR under noise-free conditions, while 96.64% and 39.28 dB combined strong noise attacks. The code will be available in https://github.com/rmpku/CIN.Comment: 9 pages, 9 figures, 5 table

Laccase-mediated dye-free coloration of wool fabric

In this study, an investigation on a novel coloring technique, based on laccase-mediated radical coupling of amino acidmolecules of wool fibres, has been carried out. Firstly, the influence of temperature, incubation time, and pH on the K/Svalue and hue angle (h) of the colored wool fabrics is studied. Analysis of levelness of coloration, wash fastness, rubfastness, and UV-protection factor of the colored wool fabrics has been done. Then, the surface morphology and structure ofthe wool fibres are analyzed by scanning electron microscopy (SEM) and Fourier transform Infrared spectroscopy (FTIR).The enzymatic coloration processes are carried out in an acetate-sodium acetate buffer medium (pH 5) at 50 C for 24 h andthe colored wool fabrics show good color fastness and uniformity. The results obtained are as per the requirements of textilecolor fastness. SEM study shows that no particles are adhered to the surface of the wool fibres. The results of FTIR andultraviolet-visible spectroscopy show that the obvious oxidation coupling reactions take place between the molecules in thepolypeptide chains of the wool

(Dimethyl­formamide)(2-methyl­propen­oato)[tris­(1-methyl-1H-benzimidazol-2-ylmeth­yl)amine]­manganese(II) perchlorate dimethyl­formamide solvate

In the title complex, [Mn(C4H5O2)(C27H27N7)(C3H7NO)]ClO4·C3H7NO, the MnII ion is seven-coordinated in a distorted monocapped trigonal-prismatic geometry formed by a tetra­dentate tris­(1-methyl-1H-benzimidazol-2-ylmeth­yl)amine mol­ecule, a bidentate 2-methacrylate anion and a dimethyl­formamide mol­ecule. The methyl groups of the coordinated dimethyl­formamide mol­ecule and the perchlorate anions are disordered over two positions with occupancy factors of 0.640 (8) and 0.360 (8)

Bis[1,3-bis(1-propyl-1H-benzimidazol-2-yl)-2-oxapropane]­cadmium(II) dipicrate dimethyl­formamide monosolvate

In the title compound, [Cd(C22H26N4O)2](C6H2N3O7)2·C3H7NO, the CdII ion is coordinated by four N atoms and two O atoms from two tridentate 1,3-bis­(1-propyl-1H-benzimidazol-2-yl)-2-oxopropane ligands in a distorted octa­hedral coordination environment. There are significant differences in the chemically equivalent Cd—O bond lengths [2.618 (2) Å and 2.561 (2) Å]

Bis[1,3-bis­(1-methyl-1H-benzimidazol-2-yl)-2-oxapropane]­cadmium dipicrate acetonitrile sesquisolvate 0.25-hydrate

In the title compound, [Cd(C18H18N4O)2](C6H2N3O7)2·1.5CH3CN·0.25H2O, the CdII ion is coordinated by four N atoms and two O atoms from two tridentate 1,3-bis­(1-methyl-1H-benzimidazol-2-yl)-2-oxopropane ligands in a distorted octa­hedral coordination environment. The lengths of the chemically equivalent Cd—O bonds [2.4850 (16) and 2.5488 (16)Å] are signiificantly different. One of the picrate anions is disordered over two sets of sites, with refined occupancies of 0.504 (15) and 0.496 (15). A 0.5-occupancy acetonitrile solvent mol­ecule is disordered over two sites with equal occupancies. The H atoms of a 0.25-occupancy solvent water mol­ecule were neither located nor included in the refinement