Self-assembly hexanuclear metallacontainer hosting halogenated guest species and sustaining structure of 3D coordination framework

Abstract

Chloride-centered hexanuclear hydroxopyrazolate reveals potential as a receptor of halomethane and halometallate species and as a molecular building block for coordination polymers.

3-(4-Pyridyl)-acetylacetone – a fully featured substituted pyridine and a flexible linker for complex materials

“…By analogy with inorganic zeolites, porosity and formation of well defined voids in coordination polymers are important aspects, e.g. for selective inclusion of halogenated small molecules by suitable building blocks (Govor et al, 2011). Ditopic (Heering et al, 2013) or polytopic (Li et al, 2014) ligands with suitable geometry have been used for the construction of metal-organic frameworks (MOFs); the conditions for entanglement of such MOFs have been recently reviewed (Yang et al, 2013).…”

Structural re-arrangement in two hexanuclear CuIIcomplexes: from a spin frustrated trigonal prism to a strongly coupled antiferromagnetic soluble ring complex with a porous tubular structure

“…Notice also that the presence of any m 6 -X bridge surrounded by six Cu II ions is very unusual in coordination chemistry. Thus, only four m 6 -Cl À , [40][41][42] three m 6 -V, [43][44][45] two m 6 -S, 46,47 one m 6 -Br, 48 one m 6 -I, 49 one m 6 -O 2À , 50 and one m 6 -H 51 have been reported to date. Among these 13 examples, there is only one (the m 6 -Cl À complex [Cu 6 (m 6 Cl)-(m 3 OCH 3 ) 2 (m 2 pyrazolate) 9 ], 42 ) in which the six copper atoms present a trigonal prismatic geometry as in 1.…”

The heterobifunctional ligand 5-[4-(1,2,4-triazol-4-yl)phenyl]-1H-tetrazole and its role in the construction of a CdIImetal–organic chain structure

“…Recently, Bondar et al (2008) described a 1,2,4-triazole/tetrazole ligand linked by a 1,4-phenylene spacer, which shows promise for the production of microporous coordination polymers prepared in aqueous media under hydrothermal conditions. Another interesting example, demonstrating the heterobitopic ligand concept in the construction of porous heterometallic Cd/{Cu 6 (OH) 6 } frameworks, was provided by Govor et al (2011). 4-(3,5-Dimethylpyrazol-4-yl)-1,2,4-triazole was utilized in the self-assembly of halide-incorporating nanocluster {Cu 6 (OH) 6 } container molecules for halogenated hydrocarbon sorption applications, and their rational integration into polymeric solids was realised using a 'step-by-step' approach.…”