Diamondoid MOFs

Fixing Li" on the internal surface of MOFs can potentially stabilise a partially exposed Li, and some recent reports have indicated that this is a viable route to improving H2 adsorption enthalpy. HaPPZlInfQPTC)] (H2PPZ = dihydropiperazi-nium cation, H4QPTC = quaterphenyl-3,5,3, 5 -tetracarboxylic acid) has an anionic interpenetrated diamondoid framework structure. In the as-synthesised material... 

Keywords Diamondoid net Metal-organic framework Noncentrosymmetric MOFs Nonlinear optics Octupolar symmetry Push-pull effect Second harmonic generation... 

Scheme 3 3D MOFs of diamondoid topology built from Zn VCd " tetrahedral connecting nodes and p-pyridinecarboxylate type of unsymmetrical ligands...

The bipyridyl ligands, well known for constructing MOFs, have been used as the coligand. The anhydrous [M(HCOO)2(4,4 bpy)] (M = Mn, Co, Ni, Cu 4,4 -bpy = 4,4 -bipyridine) possess a 3D metal formate (anti-anti) diamondoid framework,with the bpy pillars locating in the framework channels and coordinating metal sites. Instead, the hydrous compounds of [M(HC00)2(4,4 -bpy)](H20)5 (M = Co, Ni) are 3D CdS04 type framework constructed by anti-anti formate and 4,4 -bpy, with channels filled by water. 

Figure 1 Archetypal coordination polymer or metal-organic framework structures (a) diamondoid structure of [Cu(tetra-(4-cyanophenyl)methane)]+ (b) structure of [Zn40(bdc)j], MOF-5...

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