Organic Crystal Engineering of Thermosetting Cyanate Ester Monomers: Influence of Structure on Melting Point

2016 ◽  
Vol 16 (7) ◽  
pp. 4082-4093 ◽  
Author(s):  
Andrew J. Guenthner ◽  
Sean M. Ramirez ◽  
Michael D. Ford ◽  
Denisse Soto ◽  
Jerry A. Boatz ◽  
...  
Keyword(s):  
Melting Point ◽  
Crystal Engineering ◽  
Cyanate Ester ◽  
Organic Crystal

Organic crystal engineering with piperazine-2,5-diones. 2. Crystal packing of weakly dipolar piperazinediones derived from 2-amino-4-bromo-7-methoxyindan-2-carboxylic acid

Tetrahedron ◽  
1999 ◽  
Vol 55 (50) ◽  
pp. 14301-14322 ◽  
Author(s):  
Lawrence J. Williams ◽  
B. Jagadish ◽  
Michael G. Lansdown ◽  
Michael D. Carducci ◽  
Eugene A. Mash
Keyword(s):  
Carboxylic Acid ◽  
Crystal Engineering ◽  
Crystal Packing ◽  
Organic Crystal

Pillars of crystal engineering: crystal energies and symmetry operators

CrystEngComm ◽  
2018 ◽  
Vol 20 (18) ◽  
pp. 2511-2518 ◽  
Author(s):  
A. Gavezzotti
Keyword(s):  
Interaction Energy ◽  
Crystal Structures ◽  
Crystal Engineering ◽  
Organic Crystal ◽  
Symmetry Operators ◽  
Lattice Energies

Molecular pairs with top-ranking interaction energy are sorted out for 1235 organic crystal structures, in relationship with the corresponding symmetry operators. Top pairing energies compare with 20–40% of the total lattice energies (see figure).

Organic Crystal Engineering with 1,4-Piperazine-2,5-diones. 7. Crystal Packing of Piperazinediones Derived from 2-Amino-7-nitro-4-methoxyindan-2-carboxylic Acid

2008 ◽  
Vol 8 (9) ◽  
pp. 3257-3270 ◽  
Author(s):  
Deogratias Ntirampebura ◽  
Bhumasamudram Jagadish ◽  
Gary S. Nichol ◽  
Michael D. Carducci ◽  
Alice Dawson ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Crystal Engineering ◽  
Crystal Packing ◽  
Organic Crystal

Organic Crystal Engineering with Piperazine-2,5-diones. 4. Crystal Packing of Piperazinediones Derived from 2-Amino-7-cyano-4-methoxyindan-2-carboxylic Acid

2003 ◽  
Vol 3 (5) ◽  
pp. 811-821 ◽  
Author(s):  
Bhumasamudram Jagadish ◽  
Michael D. Carducci ◽  
Christian Bosshard ◽  
Peter Günter ◽  
Jason I. Margolis ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Crystal Engineering ◽  
Crystal Packing ◽  
Organic Crystal

scholarly journals Odd-Even Effect in the Elastic Modulii of α,ω-Alkanedicarboxylic Acids

2014 ◽  
Vol 70 (a1) ◽  
pp. C551-C551
Author(s):  
Manish Mishra ◽  
Sunil Varughese ◽  
Upadrasta Ramamurty ◽  
Gautam Desiraju
Keyword(s):  
Elastic Modulus ◽  
Melting Point ◽  
Crystal Engineering ◽  
Weak Interactions ◽  
Molecular Crystals ◽  
Relative Strength ◽  
Molecular Solids ◽  
Structure Property ◽  
Depth Of Penetration ◽  
Molecular Conformations

Nanoindentation is a probe used to quantitatively assess mechanical behavior of small volume materials. In this technique, load applied vs. the depth of penetration of the indenter into the specimen are measured simultaneously and with high precision and resolution. By analyzing the data, one can obtain the elastic modulus and hardness of crystals. Though this technique has been extensively used to characterize inorganic and engineering materials, we have recently extended its utility to study weak interactions and to establish structure-property relationships in molecular crystals. Being able to assess the relative strength of weak interactions such a technique has become relevant to the subject of crystal engineering which is concerned with the design of molecular solids with desired properties and functions. In our recent studies through nanoindentation on the alkanedicarboxylic acids reveals that the elastic modulus shows similar alternation property as the melting point alternation. Our results are endorsing the strained molecular conformations hypothesis for the melting point alternation of diacids, proposed by Thalladi et al. These results support the development of crystal engineering because nanoindentation may be used as a direct measure of molecular and crystal energies of molecular crystals.

Sign in / Sign up

Export Citation Format

Share Document