Dinuclear and polymeric Hg(II) complexes with 1-(2-furoyl)thiourea derivatives: Their crystal structure and related properties

摘要: Abstract Dimeric and polymeric complexes bis{[(1-(2-furoyl)-3-bencyl-3-phenylthiourea-κS)chloromercury(II)]-μ-chloro} (HgCl2-FBFT) catena-poly{[(1-(2-furoyl)-3-bencylthiourea-κS)chloromercury(II)]-μ-chloro} (HgCl2-FBT) were prepared by reaction of HgCl2 with 1-(2-furoyl)-3-bencyl-3-phenylthiourea (FBFT) 1-(2-furoyl)-3-bencylthiourea (FBT) in ethanol. Their crystal structures solved refined from X-ray powder diffraction data using direct space global optimization strategy (simulated annealing) followed the Rietveld refinement. Both solids exhibit 1:1 metal:ligand stoichiometry a distorted tetrahedral geometry for coordination mercury centers. The mercury(II) characterized elemental analysis, Raman, NMR TG-DTG data. Complex HgCl2-FBFT crystallizes triclinic system, group P 1 ¯ , while HgCl2-FBT orthorhombic Pcnn. In dimeric complex each Hg(II) atom is found coordinated to S ligand, terminal two bridging chlorine atoms. Neighboring dimers remain together solid through dipolar quadrupolar interactions. polymer bridged ions also ion molecule ligand atom. This compound exhibits intramolecular intermolecular hydrogen bonds; these last ones are responsible packing chains 3D framework. photoluminescence properties indicate that both fluorescent materials maximum emission at 425 nm.