Controllable preparation of ZnII coordination polymers: unusual solvothermal formation of a LiGe-type framework directed by in situ S–S coupling of 5-(4-pyridyl)-1H-1,2,4-triazole-3-thiol

Abstract

Controlled assembly of Zn(II) with a versatile ligand 5-(4-pyridyl)-1H-1,2,4-triazole-3-thiol (Hptt) in conventional or solvothermal condition affords two distinct coordination frameworks, in which the former shows a unique 3-D pseudo-polyrotaxane architecture with 1-D water tapes penetrating the 2-D Zn-ptt layers, whereas the later is generated from in situ S-S coupling of Hptt and has a very rare 2-fold interpenetrating LiGe (lig) topology.

Synthesis, Crystal Structure and QuantumChemical Study on 3-Phenylamino-4-Phenyl-1,2,4-Triazole-5-Thione

“…In previous papers [4,5,6,7,8], we have reported several new compounds containing the 1,2,4-triazole moiety. 1,2,4-Triazole-5-thiones are important triazole derivatives and many mono-, di- and tri-substituted 1,2,4-triazole-5-thiones have been reported [9,10,11,12], but, to our knowledge, no structural data obtained either by experimental or theoretical methods have been reported so far for the title compound, 3-phenylamino-4-phenyl-1,2,4-triazole-5-thione. Especially, there have been no reports on the bioactivities of this compound till now, so we have synthesized the title compound and determinations of its bioactivities are currently in progress.…”

A novel 3D CdII-coordination framework with helical units in a mixed flexible ligand system: Encapsulating right-handed helical water chains

“…Compared with the aforementioned cases, metalcontaining helical chain structures, especially for mixed flexible ligands system, trapped in 3D metal-organic frameworks (MOFs) by coordination and/ or H-bonding interactions, are much less common [13,14]. At the same time, H-bonding helical water chains are closely relevant to many biological processes and also to new crystalline materials [15][16][17][18]. In spite of some achievements, the rational construction of such supramolecular systems with helicity is acutely hampered by limited understanding of the structural constraints in stabilizing the arrays [19,20].…”