SDS of cas: 693-67-4. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 1-Bromoundecane, is researched, Molecular C11H23Br, CAS is 693-67-4, about Chalcogen bonding and liquid crystallinity: Understanding the anomalous behaviour of the 4′-(alkylthio)[1,1′-biphenyl]-4-carbonitriles (nSCB). Author is Cruickshank, Ewan; Strachan, Grant J.; Storey, John MD; Imrie, Corrie T..
The synthesis and characterization of the first eleven members of the 4′-(alkylthio)[1,1′-biphenyl]-4-carbonitriles, I [n = 1, 2, 3, etc.] was reported. All eleven members I showed monotropic liquid crystal behavior. The first six members were exclusively nematogenic, the seventh member showed nematic and smectic A phases and the higher homologues only smectic A behavior. A comparison of their transitional behavior with that of the corresponding alkyl and alkyloxy-cyanobiphenyls revealed a new pattern of behavior. Specifically, the nematic-isotropic transition temperatures showed a large decrease on passing from the methylthio to ethylthio homologues. This unexpected behavior was interpreted in terms of chalcogen bonding.
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Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem