| CPC C07D 487/22 (2013.01) [A41D 19/0055 (2013.01); A41D 31/30 (2019.02); C11D 3/168 (2013.01); C11D 3/48 (2013.01)] | 5 Claims |
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1. A population of compounds comprising compounds according to one or more of formulas Cs, C4h, D2h and C2v below:
![]() wherein in each of the above formulas:
each occurrence of R is independently R′ or R″, where there is a mean average of (a) occurrences of R′ and (b) occurrences of R″ in each formula; and a+b=4;
R′ is 3-oxygen linked pyridyl having the following structure:
![]() R″ is 3-oxygen linked N-alkylated pyridinium having the following structure:
![]() wherein the mean average total number of substituent R″ (b) is from 1 to 3.9;
M is selected from aluminium or zinc;
each formula has counterions X selected from Cl−, Br−, I−, methanesulphonate, ethanesulphonate, formate, acetate or other inorganic or organic counter-ion or mixture thereof; and
wherein R′″ is optionally branched C1-C8 alkyl,
and wherein the population of compounds comprises a compound having the following structure:
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