Journal Article10.1016/S0025-5408(98)00031-2
Crystal Engineering: Some Further Strategies
Addlagatta Anthony,Gautam R. Desiraju,Ram K. R. Jetti,Srinivasan S. Kuduva,N. N. L. Madhavi,Ashwini Nangia,Ram Thaimattam,Venkat R. Thalladi +7 more
93
TL;DR: In this paper, structural studies of low-symmetry structures of 2,4,6-trinitromesitylene and 4,4-diphenyl cyclohexadienone are reported.
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About: This article is published in Crystal Engineering. The article was published on 01 Jun 1998. The article focuses on the topics: Crystal engineering & Supramolecular chemistry.
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Citations
Conformational polymorphism in organic crystals.
TL;DR: Organic molecules with flexible torsions and low-energy conformers have a greater likelihood of exhibiting polymorphism because (1) different conformations lead to new hydrogen-bonding and close-packing modes and (2) the tradeoff reduces the total energy difference between alternative crystal structures.
508
The nature of halogen...halogen interactions: a model derived from experimental charge-density analysis.
TL;DR: The attractive and anisotropic nature of the ClCl interaction in C(6)Cl( 6) is experimentally demonstrated from an expansion of the electron density rho(r) around the chlorine nuclei.
373
Crystal Engineering through Halogen Bonding: Complexes of Nitrogen Heterocycles with Organic Iodides
Rosa D. B. Walsh,Clifford W. Padgett,Pierangelo Metrangolo,Giuseppe Resnati,Timothy W. Hanks,William T. Pennington +5 more
TL;DR: X-ray analysis has revealed that 4,4-bipyridine, 1,2-bis(4-pyridyl)ethylene, and hexamethylenetetramine form donor-acceptor complexes with 1, 4-diiodobenzene and tetraiodoethylene in which the N···I distance is longer than that for the corresponding I2 complexes as discussed by the authors.
340
C–halogen···π interactions and their influence on molecular conformation and crystal packing: a database study
M.D. Prasanna,T. N. Guru Row +1 more
TL;DR: In this paper, the role of C−X−π interactions in conformational and crystal engineering control in organic crystal structures was investigated. But the results showed that organic fluorine has a greater propensity for the formation of such interactions rather than accepting hydrogen bonds.
198
Triangular halogen-halogen-halogen interactions as a cohesive force in the structures of trihalomesitylenes
Eric Bosch,Charles L. Barnes +1 more
TL;DR: In this paper, the structures and molecular packing of tribromo- and triiodomesitylene are compared and compared to that of trichloromesity leyes, where attractive triangular X3 interactions dominate the molecular packing in all three structures.
162
References
Crystal inclusion chemistry of zinc-tetra(4-bromophenyl)porphyrin
TL;DR: The structural patterns of Zn(II)-tetra(4-bromophenyl)porphyrin and several of its newly prepared complexes and clathrates in the solid phase were determined by X-ray crystallography as mentioned in this paper.
21
Retention of ‐4 Symmetry in Compounds Containing MAr4 Molecules and Ions
M. A. Lloyd,C. P. Brock +1 more
TL;DR: A search of the Cambridge Structural Database showed that MAr4 molecules usually retain the low-energy \overline 4 conformation in the crystal as discussed by the authors, and MAr^{q}_{4} ions also usually occupy sites if the counterion can conform to higher symmetry.
18
Multimode effects and vibronic borrowing
TL;DR: The effects of a large multidimensional vibrational subspace on the Herzberg-Teller theory of vibronic borrowing are explored in this paper, where it is found that significant vibronic intensity can be induced at the OO transition of a weakly allowed electronic excitation.
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