Novel method for the production of copper(II) formates, their thermal, spectral and magnetic properties

Key Aspects of the Processes of Thermal Decomposition of Complex Compounds of Copper Formate for Low-Temperature Printed Electronics

“…However, it should be noted that the QC method does not allow taking into account all thermodynamic aspects of a real system associated with its macroparameters, and it is also necessary to take into account the role of the crystal structure in it. So, the number of oxygen bonds with copper increases from two to six during the transition from a single molecule to a crystal structure . Therefore, it is schematically shown in Figure that the sharing of copper atoms between neighboring oxygen atoms in the crystal lattice can lead to additional charge redistribution.…”

“…However, for complex compounds, the error associated with this is less pronounced since the formation of oxygen bonds is blocked by ligands coordinated around the central atom (Figure ). It also follows that copper formate molecules allow forming symmetrical crystal structures in all the axes, which does not give any center an advantage in initiating a redox reaction since in coordination binary lattices, the bonds between the central atom and all the neighbors in the first coordination sphere are mainly the same, and their interatomic distances are also close. − The introduction of ligands into such a structure upsets the balance and symmetry of the crystal structure, which probably leads to an uneven distribution of electron density, lowering the energy barrier both for the reaction and for the steric hindrances that precede it.…”

“…So, the number of oxygen bonds with copper increases from two to six during the transition from a single molecule to a crystal structure. 52 Therefore, it is schematically shown in Figure 6 that the sharing of copper atoms between neighboring oxygen atoms in the crystal lattice can lead to additional charge redistribution. Such sharing may result in the distribution of electron density between equivalent Cu−O bonds and, as a consequence, in the individual weakening of each of them.…”

Comparison of the corrosion behavior of copper tubes in formic acid and acetic acid environment

“…This phenomenon demonstrates that corrosion time has important effects on the structure of corrosion products. [ 34 ] The absorption bands observed in the FTIR spectra of the compounds are typical metal‐coordinated ions HCOO − and CH 3 COO − . The absorption band of 1639 cm −1 is responsible for the stretching vibrations of C–O bonds of the COH group in the FTIR spectrum of Cu(HCOO) 2 and the absorption band of 1633 cm −1 is responsible for the stretching vibrations of C–O bonds of the COO group in Cu(CH 3 COO) 2 .…”