Novel vic-dioxime ligands and their poly-metal complexes bearing 1,8-diamino-3,6-dioxaoctane: synthesis, characterization, spectroscopy and electrochemistry

Abstract

Novel vic-dioxime ligands and their poly-metal complexes bearing 1,8-diamino-3,6-dioxaoctane: synthesis, characterization, spectroscopy and electrochemistry Abstract Three novel vic-dioxime ligands containing the 1, 2 and 3), where M = Cu II , Co II , and Ni II , have been obtained with 1:1 metal/ ligand ratio. The Cu II and Ni II poly-metal complexes of these ligands are proposed to be square planar, while also the prepared Co II complexes are proposed to be octahedral with two water molecules as axial ligands. The detection of Hbonding in the [Ni(L 1 SL 1 )] n , [Ni(L 2 SL 2 )] n and [M(L 3 SL 3 )(H 2 O)] n metal complexes by FT i.r. spectra revealed the square planar or octahedral [MN 4 ÁH 2 O)] n coordination of poly-nuclear metal complexes. [MN 4 ] n coordination of the [Ni(L 1 SL 1 )] n and [Ni(L 2 SL 2 )] n complexes were also determined by 1 H-n.m.r. spectroscopy. The ligands and poly-metal complexes were characterized by elemental analyses, FT-i.r., u.v.-vis., 1 H and 13 C-n.m.r. spectra, magnetic susceptibility measurements, molar conductivity, cyclic voltammetry, and differential pulse voltammetric (DPV) techniques.

Microwave-assisted synthesis and photovoltaic measurements of CuInS2 nanoparticles prepared by using metal–organic precursors

“…In the FT-IR spectrum of [Cu(DADO)]SO 4 precursor, the v(N-H) stretching vibrations are observed between 3413 and 3242 cm À1 . The two bands centered at 2921 cm À1 are attributed to the asymmetric and symmetric CH 2 stretch vibrations, respectively [45]. All observed peaks in the spectra of [Cu(DADO)]SO 4 complex are corresponding to the reported data [33].…”

Nickel Glyoximate Based Metal–Covalent Organic Frameworks for Efficient Photocatalytic Hydrogen Evolution

“…Metal glyoximate complexes have been investigated for more than a century (Scheme 1). [15] These complexes exhibit good stability and unique electronic properties originating from their planar structure and intramolecular hydrogen bonding [16] . The planar structure of metal glyoximate ligands is beneficial to form charge transfer salts featuring stacked 2D layered structures [17] .…”

“…[15] These complexes exhibit good stability and unique electronic properties originating from their planar structure and intramolecular hydrogen bonding. [16] The planar structure of metal glyoximate ligands is beneficial to form charge transfer salts featuring stacked 2D layered structures. [17] Therefore, metal glyoximate complexes are expected to be a potential non-noble-metal photocatalytic platform.…”