Abstract
Hydrogen-bonding has a profound effect on topologies, and various 1D (band, pillar or chain), 2D and 3D hydrogen bonding networks have been observed.
Highlights
The self-assembly of tectons into extended network structures is the core of supramolecular chemistry and crystal engineering
For the construction of a desired framework and functionality, it is important to control and understand the factors, such as counterions, solvents, temperature and pH value, that tend to influence the structural prediction on the assembly of the final coordination frameworks and govern the crystal growth and the stability of the overall crystals.1b,13 Among the above factors, it has been demonstrated that counterions have a significant effect on the formation of the product
Sizes, and geometries of anions have a great influence on the structural assembly and importantly influence the prediction of the overall supramolecular architectures of coordination compounds.1b,14 Cations can have a significant influence on the crystal architecture. ‘‘Naked’’ alkali cations are useful tectons due to their different sizes and polarisability, while in the case of NH4+ and hydrated cations, besides their size and charge, the hydrogen bonding capacity can enable the formation of high-dimensional frameworks.[15]
Summary
The self-assembly of tectons into extended network structures is the core of supramolecular chemistry and crystal engineering. One asymmetric unit of 1Á2H2O contains one complex anion, one cation and two molecules of crystal water (Fig. S1, ESI†).
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