Propane-1,3-diammonium bis[aquachlorido(4-hydroxypyridine-2,6-dicarboxylato-κ³O²,N,O⁶)mercurate(II)] tetrahydrate

Abstract

The reaction of mercury(II) chloride dihydrate, propane-1,3-diamine and 4-hydroxy­pyridine-2,6-dicarboxylic acid in a 1:1:1 molar ratio in aqueous solution, resulted in the formation of the title compound, (C3H12N2)[Hg(C7H3NO5)Cl(H2O)]2·4H2O or (pnH2)[Hg(hypydc)Cl(H2O)]2·4H2O (where pn is propane-1,3-diamine and hypydcH2 is 4-hydroxy­pyridine-2,6-dicarboxylic acid). The metal atom is coordinated by one chloride group, one water mol­ecule cis to the chloride ligand and one (hypydc)2− ligand. The coordinated water mol­ecule is almost perpendicular to the plane of the aromatic ring of (hypydc)2−. The geometry of the resulting HgClNO3 coordination can be described as distorted square-pyramidal. This structure also contains propane-1,3-diammonium (site symmetry 2) as a counter-ion and four uncoordinated water mol­ecules. There is a wide range of non-covalent inter­actions consisting of hydrogen bonding [of the types O—H⋯O, N—H⋯O and C—H⋯O, with D⋯A ranging from 2.548 (5) to 3.393 (6) Å] and ion pairing.

[μ-1,1′-(Butane-1,4-diyl)di-1H-benzimidazole-κ2N3:N3′]bis{[N,N′-bis(carboxymethyl)ethylenediamine-N,N′-diacetato-κ5O,O′,O′′,N,N′]mercury(II)} methanol disolvate

“…effects from the bulky ligands. The Hg-O bond lengths are in agreement with those found in related Hg(II) complexes (Guo & Dong, 2009;Aghabozorg, et al, 2008)…”

“…For the synthesis, see: Xiao et al (2004); Xie et al (2002). For bond lengths related mercury compounds, see: Guo & Dong (2009); Aghabozorg, et al (2008).…”

Propane-1,2-diaminium bis(pyridine-2,6-dicarboxylato-κ3O2,N,O6)mercurate(II) dihydrate

“…Our research group has previously reported several proton-transfer compounds using pyridine-2,6-dicarboxylic acid (pydcH 2 ), propane-1,2-diamine (p-1,2-da) and propane-1,3-diamine (p-1,3-da), including (p-1,2-daH 2 )(pydcH) 2 .2H 2 O (Aghabozorg et al, 2008d) (Aghabozorg et al, 2008a)…”

(Propane-1,3-diammonium) bis(4-hydroxypyridine-2,6-dicarboxylato-κ3O2,N,O6)zinc(II) 3.5-hydrate

“…For related structures, see: Aghabozorg et al (2007Aghabozorg et al ( , 2008a; Hall et al (2000); Ramos Silva et al (2008); Soleimannejad et al (2009); Zhou et al (2003Zhou et al ( , 2007; Zou et al (2009).…”

“…Data collection: SMART (Bruker, 2007); cell refinement: SAINT-Plus (Bruker, 2007); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL. (Hall et al, 2000) and (tataH) 2 [Cu(Hchel) 2 .6H 2 O (tata = 2,4,6-triamino-1,3,5-triazine) (Ramos Silva et al, 2008) (Zhou et al, 2003), [Zn 3 (chel) 2 .8H 2 O] n (Zou et al, 2009) (Aghabozorg et al, 2007), and the most similar to the title compound, (pnH 2 )[Hg(Hchel)Cl(H 2 O)] 2 .4H 2 O (pn = propane-1,3-diamine) (Aghabozorg et al, 2008a).…”