Barely Significant
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a clear trend

15,854 sentences · 15,854 papers · 30,749 search hits before verification · confirmed specimen

Sighted at

p<0.09

Listed by Hankins (2013) · Otte et al. (2022)

In the literature

As expected, the increase in the alkyl chain increases the thermodynamic stability of larger nuclearity species, which can be explained by the larger dispersion interactions in longer chains. However, steric effects are significantly different in the methyl case, and thus, there is the lack of a clear trend in the nucleation energetics going from methyl to propyl species.
Proper alignment of the bound ammonium ions with the host carbonyl dipoles is critical: In the homologous series of n -alkane amines a clear trend in stability of the complexes was observed, reaching the maximum for n -butylamine: n = 1 < 2 < 3 < 4 > 5 > 6 > 7. α,ω-Alkanediammonium ions (H 3 N + –(CH 2 ) n –NH 3 + ) are bound by CB[6] ( 131a ) with a preference for an alkyl chain length of n = 5 or 6.