Two-dimensional supramolecular assembly of phenylmercury(II) and cadmium(II) complexes with a tridentate thiohydrazone NNS donor ligand: Synthesis, coordination behavior and crystal structure

Cationic and neutral phenylmercury(II) complexes with heterocyclic thione ligands. X-ray structures of [HgPh(dmpymtH)][BF4]·H2O and [{HgPh}2(μ-dtu)]

“…All complexes exhibit the expected ''NCS I, II and III bands" due to strong vibrational coupling effects [24]. Although complex 3 shows a strong absorption band at 807 cm À1 (absent in free dtuH 2 ), which could be related to C@S vibration [8,19], it most probably comes from nonequivalent phenyl groups. In the IR spectrum of complex 2, the BF 4 -absorption bands are seen in the region 1088-1025 cm À1 (mas) and 521 cm À1 (ms).…”

“…Not surprisingly, the complex methyl(2-methylthio-4-pyrimidinonato)mercury(II) is C-Hg-N primarily coordinated with additional intra-HgÁ Á ÁO and intermolecular HgÁ Á ÁN secondary interactions [7]. The complex phenyl (diacetylmonoximemorpholine N-thiohydrazonate)mercury(II) is C-Hg-S primarily coordinated with additional intramolecular HgÁ Á ÁN interaction [8].…”

Crystal Structure and Solid-State Properties of Metal Complexes of the Schiff Base Ligands Derived from Diacetylmonoxime: A Brief Review

“…Considering the low yield of the ligand, all the complexation reactions with this ligand were carried out under in situ condition. However, the molecular thiol form of the ligand H 2 L 3 (Figure 4) was established from the structural analysis (single-crystal X-ray diffraction) of its metal complexes [34][35][36].…”

“…Most interestingly, this ligand is found to show two types of binding modes (Figure 9), one is observed through N,S donor atoms and another one through N,N,S donor atoms. An efficient control over the ligand for binding through either N,S or N,N,S mode has been achieved though specific choice of metal systems [34][35][36][37][38]. (Figure 10).…”

“…Yields of the complexes had been recorded as 75% for each complex. The pure single crystals of the complexes were obtained from their chloroform solutions [35,36].…”