Two 3D supramolecules with helices constructed by hydrogen bonds based on p-thioacetatebenzoic acid ligand

Abstract

p-Thioacetatebenzoic acid (H 2 L) and a combination of N-donor ligands such as 4,4 0 -bipyridine (4,4 0 -bipy) and 1,3-bi(4-pyridyl)propane (bpp) with metal ions Mn(II) and Ni(II) give rise to two coordination polymers, namely, [Mn(HL) 2 (bpp) 2 (H 2 O) 2 ] n (1), [NiL (4,4 0 -bipy) (H 2 O) 3 ] n ÁnH 2 O (2). 1 features an unusual ''8'' shaped double layer by hydrogen bonds and two different types of helical chains are arrayed alternatively in the 2D double layer framework, which further extends into a 3D supramolecular structure through C-HÁÁÁO hydrogen bonds. 2 consists of 1D chains which further connect with each other via hydrogen bonds to form the final 3D framework including two different types of helical structure. Photoluminescence study reveals that 1 displays intense structure-related fluorescent emission bands (k ex = 369 nm) at 414 nm in the solid state at room temperature. Electrochemical property of 2 reveals that the process of the redox is irreversible.

Interplay of thermochemistry and Structural Chemistry, the journal (volume 21, 2010) and the discipline

“…In the last paper in this issue Zhan and Feng [222] report on synthesis of two 3D supramolecular complexes constructed from p-thioacetatebenzoic acid (H 2 L), [Mn(HL) 2 (bpp) 2 (H 2 O) 2 ] n and [NiL(4,4 0 bipy)(H 2 O) 3 ] n ÁnH 2 O (bpp = 1,3-bi(4-pyridyl)propane, 4,4 0 -bipy = 4,4 0 -bipyridine). The former compound exhibits intense structure-related fluorescent emission bands.…”

Alkali metal halogenides coordination compounds with hexamethylenetetramine

“…The research of compounds containing these cations, their ionic antagonists (like other alkaline metals) with anions existing in body fluids is thus of great importance, as they affect the sodium-potassium pump. In addition, recently, an increasing interest is put on construction of dinuclear, multinuclear and polymeric coordination compounds [24][25][26][27] created by self-assembly [28] of the components [29][30][31][32].…”