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. 2019 Sep 17;10(43):9988–9997. doi: 10.1039/c9sc02832c

Table 1. Summary of new TMA crystal structures discovered from the crystallisation screen.

Structure code a Good solvent b Bad solvent c Space group
TMA_2-33 THF n-Butylbenzene P3121
TMA_3-31 EtOH Cyclohexanone C2/c
TMA_3-36 EtOH Ph2O P1[combining macron]
TMA_4-18 2-Propanol EtOAc C2/c
TMA_6-18 1-Propanol EtOAc P1[combining macron]
TMA_7-35 1,4-Dioxane 1,3-Dimethoxybenzene C2/m
TMA_8-32 1-Butanol Mesitylene P3221
TMA_8-35 1-Butanol 1,3-Dimethoxybenzene C2/m

aStructure codes correspond to crystallisation solvents numbers listed in ESI, Table S2. The structures with hexagonal layered packing of TMA molecules are: 2-33, 3-31, 3-36, 7-35, 8-32, and 8-35. Both 4-18 and 6-18 are non-hexagonal forms that show hydrogen bonding to the crystallisation solvent.

bSolvents that dissolved TMA at concertation ≥15 mg mL–1 at RT.

cSolvents that dissolved TMA at concentration <15 mg mL–1 at RT.