10.1016/j.jssc.2010.06.015
The research investigates the synthesis and structural characterization of a series of coordination compounds containing Cu(N–N)2Cl2, Cu(N–N–N)Cl2, and HgCl2 building blocks. The purpose of this study is to explore the structural dimensionality and magnetic properties of these compounds, which are synthesized using various ligands such as bis(pyrazol-1-yl)methane (bpzm), bis(3,5-dimethylpyrazol-1-yl)methane (bdmpzm), 2,2-dipyridylamine (dpa), 5,6-diphenyl-3-(2-pyridyl)-1,2,4-trazine (dppt), 2,2'-bipyridine (bipy), and 2,2:6,2'-terpyridine (terpy). The researchers observed an increase in structural dimensionality for compounds [Cu(bpzm)2][HgCl4], [Cu(dpa)2][HgCl3]2, and [Cu(terpy)(m-Cl)HgCl3], and conducted magnetic measurements on complexes [Cu(bpzm)2][HgCl4] and [Cu(terpy)(m-Cl)HgCl3]. The study concludes that the HgCl2 moiety can accept chloride ligands from the Cu(II) centers to form binuclear or polynuclear complexes, and in the case of [Cu(terpy)(m-Cl)HgCl3], there is very weak antiferromagnetic interaction of copper centers in the one-dimensional chain.
10.1016/S0277-5387(01)00799-9
The research focuses on the synthesis and characterization of C-triorganometallated (with metals being tin and silicon) bis-(thienyl)- and bis-(pyrazolyl)alkanes, which are complex organic compounds containing heterocycles. The study involves the lithiation of 2-(thien-2-ylmethyl)thiophene and 1-[(1H-pyrazol-1-yl)methyl]-1H-pyrazole derivatives using n-butyl lithium, followed by substitution with R3M (where R3 represents trialkyltin or trialkylsilyl groups) to form the desired organometallic compounds. The reactions primarily occur at the 5,5' positions of the bis-heterocyles, as confirmed by the X-ray crystal structure of one of the compounds. Spectroscopic techniques, including infrared spectroscopy, NMR (both proton and carbon-13), and M?ssbauer spectroscopy, were employed to analyze and confirm the structures of the synthesized compounds. The research also discusses the air and moisture sensitivity of the compounds and their ultimate degradation when exposed to atmospheric conditions.
