Solid state molecules interaction schemes

Oxidation of the less bulky substituted cyclotrisilene 19 with [Et3Si(C6Hg)]+ TPFPB in benzene surprisingly resulted in the formation of the cyclotetrasileny-lium ion 20+ TPFPB , which was also free from any counterion or solvent interaction in both the solid state and solution (Scheme 2.18). In the cationic portion of the molecule 20+, the Sil, Si2, and Si3 atoms exhibited a planar geometry whereas... 

Very recently, MacGillivray et al. succeeded in the supramolecular construction of molecular ladders in the solid state using a linear template approach [48]. They designed the cocrystals 1,3-benzenediol (resorcinol) or a derivative with an all-trans-bis(4-pyridyl)butadiene or hexatriene, in which two resorcinol molecules preorganize two polyene molecules through two hydrogen bond interactions, for [2-1-2] photoaddition (Scheme 5). In this design, two polyenes would... 

Fig. 2. Top Molecular structure of Ir(4,4 dmppy)3 with atom labeling schemes and 50% thermal ellipsoids all hydrogen atoms have been omitted for clarity bottom crystal packing diagram between two adjacent molecules of Ir(4,4 dmppy)3 showing the lack of a n-n stacking interaction in the solid state.

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