Synthesis of Organophosphorus Complexes and Structural Charaterization of Two Dimeric Triphenylphosphinne Complexes of Mercury(ii) Ions From Dimeric Complexes of [4-Methylbenzoylmethylenetri-P-Tolylphosphine Mercury(ii) Halides

Abstract

The organophousphorus complexes of [(PPh 3) 2 Hg 2 Cl 4 ] (4), [(PPh 3) 2 Hg 2 Br 4 ] (5) and [(PPh 3) 2 Hg 2 I 4 ] (6) were resulted from nucleophilic substitution of triphenylphosphine ligand with trip -tolylphophine complexes (1-3). The crystal structures of two organophousphorus complexes of mercury(II) ions 4 and 6 have been determined by means of the X-ray diffraction. Both complexes were crystallized in the monoclinic space groups P2(1)/c, and have very similar bond lengths, angles pattern and same substituted triphenylphosphine ligand. Single crystal X-ray analysis of title structures reveal the presence of a centrosymmeteric dimeric structure containing the ligand and mercury halides.

Halide bridged organophosphorus complexes of HgX2 (X: I, Br and Cl): Synthesis, structure and theoretical studies

“…The sp 3 hybridized Hg (II) ion in the complex 1 adopted a tetrahedral coordination environment with one short Hg-I bond at distance 2.6745(6) Å, one Hg-P bond at distance 2.4739(17) Å and two asymmetric bridging Hg-I bonds at distances 2.8397(6) and 2.9539(6) Å. The internuclear distances between mercury atoms were found to be 3.911(2) Å, which was much longer than the sum of van Der Waals radius (1.50 Å) of the two mercury atoms [35,48]. This indicated that the absence of significant bonding interactions between the mercury atoms in the molecular structure of complex 1.…”

“…The organophosphorus complexes 1, 2, and 3 have been synthesized as white crystalline solids by the reaction of HgX2 (X: I, Br, and Cl) and PPh3 in 1:1 proportion in good yield in acetonitrile medium (Scheme 1). Earlier, Dadrass et al [35] reported the syntheses of these complexes, but their synthetic methods were more tedious and less economical. These had been prepared by the nucleophilic substitution reaction of triphenylphosphine ligand with tri(p-tolyl)phosphinehalide complexes using dry solvent methanol and diethyl ether, and recrystallized from chloroform diethyl ether.…”

“…The single crystal structure of complex 1 was obtained and its simulated powder pattern was compared with the powder X-ray diffraction (XRD) data of the other two derivatives (2 and 3). We also compared obtained data with the ABSTRACT RESEARCH ARTICLE KEYWORDS 2021 -European Journal of Chemistry -CC BY NC -DOI: 10.5155/eurjchem.12.1.23-31.2039 literature [35]. These coordination compounds were studied using geometrical analysis, Hirshfeld surface analysis, and DFT studies, helping us to compare with each other.…”

A novel azo compound derived from ethyl-4-amino benzoate: synthesis, nonlinear optical properties and DFT investigations

“…LUMO and HOMO energy and gap energy give expression of the chemical action of molecules, and the molecule which has a small gap energy (LUMO-HOMO) can be linked to high chemical reactivity [47]. The dipole moment (µ) is used to find out the molecules polarity, when the electronegativity of atoms increases, the value of dipole moment increases too [48]. Due to the data in Table 1, we found that the EAB compound has a high stability and chemical activity capability.…”

Synthesis, DFT calculations and optical nonlinear properties of two derived Schiff base compounds from ethyl-4-amino benzoate

“…The framework's total energy consists of internal, potential, and kinetic energies [66]. The high value of total energy signifies the better stability of compounds.…”