F…F interactions Hirshfeld surface analyzes NCI QTAIM RNA crystallographic structures RNA structural motifs Raman spectroscopy X-ray crystallography X-ray single crystal diffraction base-base interactions bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general boron cages cambridge structural database chalcogen bond chiral thiophosphorylated thioureas chirality control classification of base arrangement crystal structures dihydrogen bonds halogen bond hirshfeld surface in situ crystallization intermolecular interactions knowledge-based analysis lattice energies lattice energy n/a nickel(II) complexes organofluorine compounds packing motifs