@article { ISI:000261711400041,
	title = {Molecular association via halogen bonding and other weak interactions in the crystal structures of 11-bromo-12-oxo-5 beta-cholan derivatives},
	journal = {Journal of Molecular Structure},
	volume = {892},
	number = {1-3},
	year = {2008},
	month = {DEC},
	pages = {246-253},
	publisher = {ELSEVIER SCIENCE BV},
	type = {Article},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Methyl 3 alpha,7 alpha-diacetoxy-12-oxo-5 beta-cholan-24-oate 2, methyl 11 alpha-bromo-3 alpha,7 alpha-diacetoxy-12-oxo-5 beta-cholan-24-oate 3, methyl 11 beta-bromo-3 alpha,7 alpha-diacetoxy-12-oxo-5 beta-cholan-24-oate 4 and methyl 11,11-dibromo-3 alpha,7 alpha-diacetoxy-12-oxo-5 beta-cholan-24-oate 5 were synthesized. The crystal structures of these molecules were resolved to study the effect of bulky bromine atom in the steroid skeleton of cholic acid with different stereo-chemical orientations at C-11 on the two-dimensional arrangement of molecules and solid-state properties. All the molecules associate only via weak intermolecular interactions in their crystal structures, notable one being the Halogen Bonded assembly (C-Br center dot center dot center dot O) in 5. (C) 2008 Elsevier B.V. All rights reserved.</p>},
	keywords = {11-Bromosteroids, Cholic acid, crystal structure, Halogen bonding},
	issn = {0022-2860},
	doi = {10.1016/j.molstruc.2008.05.051},
	author = {Salunke, Deepak B. and Hazra, Braja G. and Gonnade, Rajesh G. and Pore, Vandana S. and Bhadbhade, Mohan M.}
}
@article {45740,
	title = {Mechanochemical synthesis of N-salicylideneaniline: thermosalient effect of polymorphic crystals},
	journal = {IUCRJ},
	volume = {4},
	year = {2017},
	month = {MAY},
	pages = {243-250},
	type = {Article},
	abstract = {<p>Polymorphs of the dichloro derivative of N-salicylideneaniline exhibit mechanical responses such as jumping (Forms I and III) and exploding (Form II) in its three polymorphs. The molecules are connected via the amide N-H center dot center dot center dot O dimer synthon and C-Cl center dot center dot center dot O halogen bond in the three crystal structures. A fourth high-temperature Form IV was confirmed by variable-temperature single-crystal X-ray diffraction at 180 degrees C. The behaviour of jumping exhibited by the polymorphic crystals of Forms I and III is due to the layered sheet morphology and the transmission of thermal stress in a single direction, compared with the corrugated sheet structure of Form II such that heat dissipation is more isotropic causing blasting. The role of weak C-Cl center dot center dot center dot O interactions in the thermal response of molecular crystals is discussed.</p>},
	keywords = {crystal design, crystal engineering, Halogen bonding, hydrogen bonding, intermolecular interactions, materials science, mechanochemistry, polymorphism},
	issn = {2052-2525},
	doi = {10.1107/S2052252517004043},
	author = {Mittapalli, Sudhir and Perumalla, D. Sravanakumar and Nangia, Ashwini}
}
