Answers are grounded in this paper and cite their sources.
Helical tubes, made up from four chains each of composition M(pzc)+ (M=Co, Ni), are present in compounds of Co or Ni ions coordinated by the ligand 2-pyrazinecarboxylic acid (2-pzc) and vanadium oxide chains. Compounds 1 and 2 have chiral structures and compound 3 contains equal numbers of left- and right-handed helices.
No takes yet. Share an insight, caveat, or question.
Zheng et al. (2000) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: