Synthesis and characterization of some novel liquid crystalline compounds of 1,3,4-oxadiazoline and their hydrazone derivatives

Tomma, Jumbad H.; Ghali, Thaer S.; Al-Dujaili, Ammar H.

doi:10.1080/15421406.2018.1468277

Cited by 11 publications

(1 citation statement)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The presence of hard nitrogen and soft sulfur atoms enable these ligands to react with both transition and maingroup metals (Arion, 2019) and transition-metal complexes derived from these N,S Schiff bases occupy a central role in the area of coordination chemistry. The nature of the long alkyl substituent chains, when present, may play a role in determining the liquid crystalline behavior of the complexes and thus their mesomorphic potential (Tomma et al, 2018;Lai et al, 1998).…”

Section: Chemical Contextmentioning

confidence: 99%

Cis versus trans arrangement of dithiocarbazate ligands in bis-chelated Ni and Cu complexes

Begum

Sheikh

et al. 2020

Acta Cryst E

View full text Add to dashboard Cite

The structures are described of two bis-chelated metal complexes of nickel(II) and copper(II) with S-n-hexyl 3-(1-phenylethylidene)dithiocarbazate Schiff bases in a cis configuration, namely, bis[S-n-hexyl 3-(1-phenylethylidene)dithiocarbazato-κ2 N 3,S]nickel(II), [Ni(C15H21N2S2)2], and bis[S-n-hexyl 3-(1-phenylethylidene)dithiocarbazato-κ2 N 3,S]copper(II), [Cu(C15H21N2S2)2]. In both complexes, the metals have distorted square-planar geometries. A search in the Cambridge Structural Database [Groom et al. (2016). Acta Cryst. B72, 171–179] for bis-chelated nickel(II) and copper(II) complexes with similar Schiff bases retrieved 55 and 36 hits for the two metals, respectively. An analysis of the geometrical parameters of complexes showing cis and trans configurations is reported and the values compared with those for the complexes described in this work.

show abstract

Section: Chemical Contextmentioning

confidence: 99%