Crystal Structure of a Novel Complex of 1,3-Bis(2-methoxybenzene)triazene with Mercury(II)

Abstract

Recently, the 1,3-bis(2-methoxybenzene)triazene ligand was synthesized and its crystal structure reported.1 Structural and solution studies of a novel tetranuclear silver(I) cluster of this ligand ([AgL]4·THF) have also been reported. 2 In this paper, we report on the synthesis of the [ClHgL] complex of this ligand and discuss the basis of the experimental results, especially the X-ray diffraction data, concerning the crystal and molecular structure of the compound (Fig. 1). The title complex was synthesized as follows: a methanol solution of ligand (0.2573 g, 0.001 mol) was added to a solution of mercury(II) chloride (0.2715 g, 0.001 mol). After mixing for one hour at room temperature, an orange precipitate was formed, filtered and washed with methanol (3 times, each time with 2 ml), and then

Halogenomercury Salts of Sterically Crowded Triazenides – Convenient Starting Materials for Redox‐Transmetallation Reactions

“…For 2a and 3a the size of the η 1 ‐bonded triazenide ligands enforces the formation of strictly monomeric compounds in which the metal atoms show a linear coordination by the Mph‐bonded nitrogen atom N3 and one halogen atom, respectively. The Hg–N3 distances of 2.090(3) Å ( 2a ) and 2.153(12) Å ( 3a ) are similar or slightly longer than the corresponding distances in three structurally characterized homoleptic mercury triazenides [2.060(5)–2.077(4) Å] 11, a triazenidomercury nitrate [2.101(8) Å] 13 and a donor‐stabilized triazenidomercury chloride [2.075(4) Å] 15. Much longer distances are observed to the Dmp‐bonded nitrogen atom N1 and the central nitrogen atom N2 with values > 2.63 Å and > 2.85 Å, respectively.…”

“…Structurally characterized mercury triazenides have been limited so far to several unsolvated 11 and solvated bis(diaryltriazenido) species 12, a mercury nitrate 13 and two heterobimetallic complexes 14. Very recently, the structural characterization of a donor‐stabilized mercury chloride was reported 15. For 2a and 3a the size of the η 1 ‐bonded triazenide ligands enforces the formation of strictly monomeric compounds in which the metal atoms show a linear coordination by the Mph‐bonded nitrogen atom N3 and one halogen atom, respectively.…”

Structural and Solution Studies of two Mercury(II) Complexes with [1,3‐Bis(2‐ethoxy)benzene]triazene

“…We have previously reported the synthesis of the ligands 1,3‐bis(2‐methoxyphenyl)]triazene,6 [1,3‐bis(2‐ethoxyphenyl)]triazene,7 and [1,3‐bis(2‐cyanophenyl)]triazene8. Additionally, we have published Hg II complexes with [1,3‐bis(2‐methoxyphenyl)]triazene by using HgCl 2 9 and HgBr 2 10 as starting materials. In addition, Ag I and Cd II complexes with this ligand are known 11,12.…”

Synthesis and Crystal Structure of Bis[1,3-bis(2-methoxyphenyl)triazene]mercury(II)

“…1 Recently, a complex containing the title ligand and Hg(II) cation was synthesized and its crystal structure reported. 2 In this complex one Cl atom on HgCl2 salt was replaced by L and a tetrahedral geometry was formed. In addition, a complex containing four molecules of L and four Ag(I) atoms was synthesized and its crystal structure and solution studies reported.…”