Unusual hydrogen bond patterns contributing to supramolecular assembly: conformational study, Hirshfeld surface analysis and density functional calculations of a new steroid derivative. - Ruiz, Alberto; Pérez, Hiram; Morera-Boado, Cercis; Almagro, Luis; da Silva, Cecilia C. P.; Ellena, Javier; García de la Vega, José M.; Martínez-Álvarez, Roberto; Suárez, Margarita; Martín, Nazario (CrystEngComm, 2014)