TY - JOUR
T1 - Mercury(II) saccharinate (sac) complexes
T2 - Synthesis and molecular structures of [Hg(sac)2(2-ampy)2], [Hg(sac)2(2-ampy)(MeOH)], [Hg(sac)2(2-abt)(MeOH)], [Hg(sac)2(2-abt)(dmso)] (2-ampy=2-aminopyridine, 2-abt=2-aminobenzothiazole)
AU - Al-jibori, Subhi A.
AU - Afandi, Zana S.
AU - Merzweiler, Kurt
AU - Wagner, Christoph
AU - Schmidt, Harry
AU - Basak-modi, Sucharita
AU - Hogarth, Graeme
PY - 2014/10/15
Y1 - 2014/10/15
N2 - Reaction of [Hg(sac)2] with two equivalents of substituted pyridines, L, [L = 2-aminopyridine (2-ampy), 2-amino-3-methylpyridine (2-ammpy), 4-vinylpyridine (4-vipy), 4-ethylpyridine (4-etpy), 2-acetylaminothiazole (2-aamtz)] in MeOH affords [Hg(sac)2L2], a crystal structure of [Hg(sac)2(2-ampy)2] revealing a distorted tetrahedral HgN4 coordination geometry. When [Hg(sac)2] is refluxed with 2-ampy in MeOH a different product namely, [Hg(sac)2(2-ampy)(MeOH)], is formed selectively a crystal structure showing a distorted tetrahedral HgN3O coordination geometry. Reaction of [Hg(sac)2] with two equivalents of 2-aminobenzothiazole (2-abt) in various solvents did not lead to the disubstituted adduct, but rather solvent-stabilized complexes, [Hg(sac)2(2-abt)(S)] (S = EtOH, MeOH, or dmso) were isolated in high yields, the dmso adduct also being formed upon crystallization of [Hg(sac)2(2-abt)(EtOH)] from dmso. Crystal structures of [Hg(sac)2(2-abt)(MeOH)] and [Hg(sac)2(2-abt)(dmso)] show that the 2-aminobenzothiazole ligand is coordinated though the endocyclic nitrogen atom. Treatment of [Hg(sac)2] with two equivalents of 2-acetylaminothiazole (2-aamtz) yields [Hg(sac)2(aamtz)2] which, on the basis of spectroscopic data, is proposed to contain an octahedral mercury(II) center with both 2-aamtz ligands coordinating in a bidentate manner through the endocyclic N-atom of the thiazole ring and the oxygen atom of the acetyl group.
AB - Reaction of [Hg(sac)2] with two equivalents of substituted pyridines, L, [L = 2-aminopyridine (2-ampy), 2-amino-3-methylpyridine (2-ammpy), 4-vinylpyridine (4-vipy), 4-ethylpyridine (4-etpy), 2-acetylaminothiazole (2-aamtz)] in MeOH affords [Hg(sac)2L2], a crystal structure of [Hg(sac)2(2-ampy)2] revealing a distorted tetrahedral HgN4 coordination geometry. When [Hg(sac)2] is refluxed with 2-ampy in MeOH a different product namely, [Hg(sac)2(2-ampy)(MeOH)], is formed selectively a crystal structure showing a distorted tetrahedral HgN3O coordination geometry. Reaction of [Hg(sac)2] with two equivalents of 2-aminobenzothiazole (2-abt) in various solvents did not lead to the disubstituted adduct, but rather solvent-stabilized complexes, [Hg(sac)2(2-abt)(S)] (S = EtOH, MeOH, or dmso) were isolated in high yields, the dmso adduct also being formed upon crystallization of [Hg(sac)2(2-abt)(EtOH)] from dmso. Crystal structures of [Hg(sac)2(2-abt)(MeOH)] and [Hg(sac)2(2-abt)(dmso)] show that the 2-aminobenzothiazole ligand is coordinated though the endocyclic nitrogen atom. Treatment of [Hg(sac)2] with two equivalents of 2-acetylaminothiazole (2-aamtz) yields [Hg(sac)2(aamtz)2] which, on the basis of spectroscopic data, is proposed to contain an octahedral mercury(II) center with both 2-aamtz ligands coordinating in a bidentate manner through the endocyclic N-atom of the thiazole ring and the oxygen atom of the acetyl group.
U2 - 10.1016/j.poly.2014.06.048
DO - 10.1016/j.poly.2014.06.048
M3 - Article
SN - 0277-5387
VL - 81
SP - 442
EP - 449
JO - POLYHEDRON
JF - POLYHEDRON
ER -