Hydrogne and fluorine in crystal engineering: systematics form crystlalographic studies of hydrogne bonded tartrate-amine complexes and fluoro-substituted coumarins, styrylcooumarins and butadienes

摘要

The aspects of crystal engineering in molecular crystals are presented to emphasize the role of intermolecular interactions and factors influencing crystal packing. Hydrgeon bonded tartrate-amine complexes have been analyzed with the propensity for formation of multidi- harmonic generation (SHG). The invariance of the framework in DBT and its possible implications on SHG is outlined. The role of Fluorine in orienting molecules of coumarins, styrlycoumarins and butadienes for photodimerization is described with particular emphasis on its steering capability. Usage of outmarin as an design element for the generation of polymorphs of substituted styrlcoumarins is examined with specific examples.