7 illustrates the data at 60 °C for which a strong trend of decreasing conductivity with MW is observed.
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Synthesis and physical properties of tris(dialkylamino)cyclopropenium dicyanamide ionic liquids.
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The sentences
Generally the DCA salts might be expected to have higher T m due to closer electrostatic attractions to the cation, however, the hexaethyl and hexadecyl salts have lower T m and, more generally, the TDAC NTf 2 − salts do not show a clear trend towards lower T m ; presumably the greater size difference in the hexadecyl case explains that one.