2-Methylresorcinarene: a very high packing coefficient in a mono-anion based dimeric capsule and the X-ray crystal structure of the tetra-anion
2016
Puttreddy, Rakesh | Beyeh, Ngong Kodiah | Kalenius, Elina | Ras, Robin H. A. | Rissanen, Kari
Mono- and tetra-deprotonated 2-methylresorcinarene anions (1 and 2) as their trans-1,4-diammoniumcyclohexane (TDAC)²⁺ inclusion complexes are reported. The mono-anion forms a fully closed dimeric capsule [1·H₂O·MeOH]₂²⁻ with a cavity volume of 165 ų and (TDAC)²⁺ as the guest with an extremely high packing coefficient, PC = 84.2%, while the tetra-anion forms a close-packed structure with two structurally isomeric tetra-anions 2a and 2b with a 50 : 50 ratio in the crystal lattice.
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