So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Arakawa, Yuki; Komatsu, Kenta; Inui, Satoyoshi; Tsuji, Hideto researched the compound: 1,5-Dibromopentane( cas:111-24-0 ).Computed Properties of C5H10Br2.They published the article 《Thioether-linked liquid crystal dimers and trimers: The twist-bend nematic phase》 about this compound( cas:111-24-0 ) in Journal of Molecular Structure. Keywords: thioether linked biphenylcyanide dimer trimer liquid crystal preparation. We’ll tell you more about this compound (cas:111-24-0).
Systematic synthesis of thioether-linked dimers and trimers was carried out to reveal mol. designs for inducing mesophases and twist-bend nematic (NTB) phases. A five-fold approach based on mol. structural parameters including the terminal substituent, the position of the thioether bond, the nature of the bridge bond linking benzene rings in the mesogenic fragments, the nature of bonds at the linkage on the side oppose to the thioether linkage, and oligomeric effect was evaluated. Dimers with cyano groups at the 4,4′-positions in each mesogenic fragment of the thioether-based dimeric system were found to afford a large long-axis directional dipole moment in the fragments and exhibited potential for application as mesogens, with some mols. indicating the ability to form NTB phase. The dimers containing the thioether bond as a part of the spacer and not at the linkage position to the mesogenic fragments deteriorate as twist-bend nematogens but behave as traditional nematogens. Also, imine-, azo- and triple-bond bridged mesogenic fragments lead the dimers to be twist-bend nematogenic. Notably, all asym. thioether-linked cyanobiphenyl dimers with different functional bonds at the linkage on the side oppose to the thioether linkage, such as methylene, ketone, and two-typed esters (C=OO and OC=O) can form NTB phases, with some of them retaining the phase upon cooling to room temperature, which highlights the utility of thioether linkage in the mol. design of twist-bend nematogens. In the trimer system (or oligomeric effect), a cyanobiphenyl-based trimer composed of interior ether and exterior thioether linkers formed an NTB phase. This paper, for the first time, not only reveals the systematic mol. design of thioether-linked dimers but also offers the prospect of the thioether-linked oligomers, for twist-bend nematic liquid crystals.
In some applications, this compound(111-24-0)Computed Properties of C5H10Br2 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis