Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 17739-45-6, is researched, SMILESS is BrCCOC1CCCCO1, Molecular C7H13BrO2Journal, Article, Angewandte Chemie, International Edition called Cation-Controlled Formation and Interconversion of the fac/fac and mer/mer Stereoisomers of a Triple-Stranded Helicate, Author is Chen, Xiaofei; Mevissen, Christian; Huda, Saskia; Goeb, Christian; Oppel, Iris M.; Albrecht, Markus, the main research direction is titanium triscatecholate helicate complex preparation; crystal structure titanium triscatecholate complex; helicate; molecular switches; self-assembly; templates; topological isomers.SDS of cas: 17739-45-6.
Two biscatecholester ligands with oligoether spacers were used to prepare dinuclear titanium(IV) triscatecholate based helicates. In the case of Li4[(1/2)3Ti2], classical helicates with three internally bound Li+ ions and syn-oriented ligands in the complex units (fac/fac isomer) were obtained. In the case of the sodium salt Na4[(2)3Ti2], a different homochiral dinuclear triple-stranded helicate with two internally bound Na+ ions was formed. The complex units are anti-configured, and two of the ligand spacers are connecting internal with external positions of the helicate (mer/mer isomer). Removal of the sodium ions and addition of lithium ions leads to the switching from one topol. to the other with an expanded helicate [(2)3Ti2]4- as an intermediate. Switching back to the nonclassical helicate cannot be observed because severe structural rearrangements would be required.
In some applications, this compound(17739-45-6)SDS of cas: 17739-45-6 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
Pyridazine – Wikipedia,
Pyridazine | C4H4N2 – PubChem