Assignment of the quadrupolar splittings in fully deuteriated alkyl chains of liquid crystalline compounds The case of 4-n-hexyloxy-4′-cyanobiphenyl

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Abstract
There have been disagreements about the assignment of the quadrupolar splittings in the deuteriated n-hexyl chain in 4-n-hexyloxy-4′-cyanobiphenyl (6OCB); these are resolved by comparing the splittings of the deuteron resonances in the fully deuteriated chain compound with those in the material with a selectively deuteriated chain. The methods available for assigning the quadrupolar splittings in fully deuteriated chains are then applied to 6OCB and it is concluded that measurement of spin-lattice relaxation times, T 1, is the best method.

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