From a Dissymmetrical Oxamidate Ligand to a 2D Coordination Polymer: Synthesis, Crystal Structure and Magnetic Properties

Abstract

A new dissymmetrical oxamidate ligand has been used to construct a metal-organic network. Using this ligand, a novel coordination polymer, namely {[Cu(obea)]2Cu・CH3OH・H2O}n (1) [H3obea = N1-(2-carboxyphenyl)-N2-(2-hydroxyethyl)oxalamide] has been synthesized and characterized by single-crystal X-ray analysis. The structure of complex 1 consists of neutral trinuclear complex units. Through syn-anti carboxylate bridges, the complex features a 2D structure with a helical substructure. Its magnetic properties have been investigated.

Flexible and mechanically-stable MIL-101(Cr)@PFs for efficient benzene vapor and CO2adsorption

“…In addition, the peak reecting C]O bond vibrations on the H 2 O 2treated PF at 1642 cm À1 was shied to lower wavenumbers and overlapped the peak of n as (COO) of the ionized carboxylate group on MIL-101(Cr)@PFs at 1630 cm À1 . 36 This shirt can be ascribed to the coordination of electron-rich oxygen atoms of C]O bond on H 2 O 2 -treated PF to the electropositive transition metal cations Cr 3+ on MIL-101(Cr), 30,37 resulting in varied chemical environment aer depositing MIL-101(Cr) on the H 2 O 2 -treated PFs.…”

Using surface‐enhanced Raman scattering (SERS) and fluorescence spectroscopy for screening yeast extracts, a complex component of cell culture media

“…For fluorescent biogenic samples, one can use excitation–emission matrix (EEM) spectroscopy which has many advantages in terms of high sensitivity, high signal‐to‐noise ratios, and relatively large linear ranges for quantitative analysis . For EEM of complex mixtures such as cell culture media where there are multiple fluorophores and other photophysically active molecules, energy transfer and energy quenching (both static and dynamic) play a large part in determining EEM spectral contours and intensity, thus, providing a unique fingerprint suitable for qualitative characterization . There is extensive literature on the utilization of multidimensional fluorescence measurements for complex mixture analysis such as crude petroleum oils, industrial processes, and tissue .…”

Syntheses, Crystal Structures, and Thermal Properties of Two Transition Metal Complexes With 4-Chlorobenzenesulfonyl-glycine Acid Ligand

“…In recent years, the supramolecular chemistry of transition metal-organic polymers based on coordiannation bonds and/or weaker intermolecular forces (such as hydrogen bonding and π-π stacking interaction) has beenwidely investigated due to their fascinating structural diversities and unexpected properties for potential practical applications [1][2][3][4][5][6] . It has been found that N-sulfonyl-amino acids can reproduce the coordination behavior of peptide and their selectivity towards metal ions [7][8][9][10] .…”