Structural Aspect of the Phase Transition between the Polymorphous Modifications of a Liquid Crystalline Copper Complex CuL 2
Structural Aspect of the Phase Transition between the Polymorphous Modifications of a Liquid Crystalline Copper Complex CuL 2
Liquid Crystalline Copper Complex CuL2 (L Is 1 Phenyl 3 methyl 4 dodecyliminomethylenepyrazol 5 onate)
About the Book
The structure of copper(II) bis(1 phenyl 3 methyl 4 dodecyliminomethylenepyrazol 5 onate) CuL 2 (I) at room temperature has been determined by X ray crystallography. DSC study has shown that com pound I undergoes a solid phase low temperature transition (T = –28°C) to modification II (its structure has been determined previously). The structures of both modifications are composed of complex molecules com bined by π–π stacking into molecular dimers (MDs) which, being in close contact with adjacent MDs, form planar layers one MD thick. These layers remain unaltered during the phase transition. The essence of the transition is in that one of the two CH 2 ) 11 (CH 3 ) 3 groups of the Cu complex at room temperature is in the “molten” state, which stimulates the rearrangement of the aliphatic zone of the crystal. As temperature changes, channels with potentially increased mobility of atoms are formed in the aliphatic zone. According to the concepts of supramolecular chemistry, the morphotropic transition occurs through a simple rotation by ±45° of the aliphatic moiety of the supramolecular assembly in the “nematic” CuL 2 crystal.
About the Contributors
Ph.D.
The Leanpub 60-day 100% Happiness Guarantee
Within 60 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
See full terms
80% Royalties. Earn $16 on a $20 book.
We pay 80% royalties. That's not a typo: you earn $16 on a $20 sale. If we sell 5000 non-refunded copies of your book or course for $20, you'll earn $80,000.
(Yes, some authors have already earned much more than that on Leanpub.)
In fact, authors have earnedover $12 millionwriting, publishing and selling on Leanpub.
Learn more about writing on Leanpub
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers) and EPUB (for phones, tablets and Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them