Ping Yang and co-workers from the University of Jinan, China have created SiO2-coated CdTe nanocrystal using
Ping Yang, Zhimin Yuan, Jie Yang, Aiyu Zhang, Yongqiang Cao, Qinghui Jiang, Ruixia Shi, Futian Liu and Xin Cheng
CrystEngComm, 2011, DOI: 10.1039/C0CE00350F
READ FOR FREE! Until November 25th.
In this CrystEngComm Hot Article, Andrzej Katrusiak and colleagues discuss the isobaric freezing of 1,1,1-trichloroethane to yields crystals. These crystals could shed new light on the range of intermolecular interactions that are capable of controlling molecular re-orientation and arrangement.
Crystalline gas of 1,1,1-trichloroethane
Maciej Bujak, Marcin Podsiadło and Andrzej Katrusiak
CrystEngComm, 2011,DOI: 10.1039/C0CE00493F
READ FOR FREE! Until 25th November.
Here is this week’s selection of advanced articles of interest to crystal engineers from across the RSC journals.
 |
Articles are chosen from: ChemComm, CrystEngComm, Dalton Transactions, Journal of Materials Chemistry, New Journal of Chemistry, Nanoscale, Organic & Biomolecular Chemistry. |
Congratulations to Raeeun Lee from the Osaka University in Japan– recent winner of the CrystEngComm Poster Prize at the 60th JSCC Symposium which took place in Osaka from the 27th-30th September!
Read the most-read CrystEngComm articles of September 2010, listed below:
An IUPAC task group has recently published their recommendations for the definition for the hydrogen bond.
“The hydrogen bond is an attractive interaction between a hydrogen atom from a molecule or a molecular fragment X–H in which X is more electronegative than H, and an atom or a group of atoms in the same or a different molecule, in which there is evidence of bond formation.”
The recommendations continue with a list of experimental and theoretical criteria that can be used as evidence for the presence of the hydrogen bond, and finish with characteristics that are typical of hydrogen bonded systems.
The task group membership includes Professor Gautam Desiraju (Bangalore, India), founding Editorial Board member, and current Advisory Board member of CrystEngComm.
For more information on the task group and to view the provisional recommendation see the IUPAC report.
Follow the links below to read two CrystEngComm Highlights with a focus on hydrogen bonding:
The marketed crystalline form of the painkiller celecoxib (Cel-III), COX-2 selective anti-inflammatory drug, has poor solubility. Various strategies to improve this and increase its bioavailability have been published including the use of crystalline forms of the sodium salt. This study by Julius Remenar and colleagues in the USA describes the structural findings and insights that have resulted from their effort to harness and understand the sodium salts of Celecoxib. Find out more in this CrystEngComm ‘Hot Article’.
Celecoxib sodium salt: engineering crystal forms for performance
Julius F. Remenar, Mark D. Tawa, Matthew L. Peterson, Örn Almarsson, Magali B. Hickey and Bruce M. Foxman
CrystEngComm, 2011, Advance Article
DOI: 10.1039/C0CE00475H, Paper
READ FOR FREE! Until November 18th.
Michael Zaworotko and colleagues from the University of South Florida demonstrate how a tetracarboxylic acid (BIPA-TC) is prepared using C3S3 and then used as a ligand to generate two isomeric nets that represent examples of “ligand-to-ligand” pillaring. To find out more about this ‘Hot Article’ read the full communication here.
Cocrystal controlled solid-state synthesis of a rigid tetracarboxylate ligand that pillars both square grid and Kagomé lattice layers
Jason A. Perman, Amy J. Cairns, Łukasz Wojtas, Mohamed Eddaoudi and Michael J. Zaworotko
CrystEngComm, 2011, Advance Article
DOI: 10.1039/C0CE00542H, Communication
READ FOR FREE! Until November 16th.
An article of interest to CrystEngComm readers from our sister journal Dalton Transactions has been published online. The article, by Catherine Housecroft and colleagues at the University of Basel, looks at catenanes which use π-stacking interactions. They show that multiple face-to-face π-stacking of arene and pyridine rings occurs in [FeL2]2+ and [RuL2]2+ (L = 6,6″-bis(4-methoxyphenyl)-4′-phenyl-2,2′:6′,2″-terpyridine) and causes [Fe(2)2][PF6]2 to be high-spin.
Read more in the full Dalton Transactions article here:
Towards catenanes using π-stacking interactions and their influence on the spin-state of a bis(2,2′:6′,2″-terpyridine)iron(II) domain
Sven Y. Brauchli, Edwin C. Constable, Kate Harris, Daniel Häussinger, Catherine E. Housecroft, Pirmin J. Rösel and Jennifer A. Zampese
Dalton Trans., 2010, Advance Article
DOI: 10.1039/C0DT00743A, Paper
A team at New York University have revealed the importance of chemical interactions at the nucleation surface compared with the periodic surface potential associated with epitaxy in controlling polymorphism through epitaxial relationships with crystalline substrates. In this communication, Brian Olmsted and Michael Ward test the effectiveness of GRACE (Geometric Real-space Analysis of Crystal Epitaxy) software in predicting cases of epitaxially directed nucleation by performing a combinatorial crystallization study involving crystalline substrates and polymorphic compounds.
The role of chemical interactions and epitaxy during nucleation of organic crystals on crystalline substrates
Brian K. Olmsted and Michael D. Ward
CrystEngComm, 2011, Advance Article
DOI: 10.1039/C0CE00366B, Communication
READ FOR FREE! Until 9th November.
