作者: Andreas Lemmerer
DOI: 10.1039/C0CE00749H
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摘要: The hydrogen bonded columns of salts benzoic acid or adamantanecarboxylic and five cyclic amines are reported. During solution crystallization, the H from carboxylic transfers to amine form ammonium carboxylate which feature three charge-separated N+–H⋯O−hydrogen bonds two types 1-D columns. Of ten structures, viz. (cyclopentylammonium·benzoate) (1), (cyclohexylammonium·benzoate) (2), (cyclododecylammonium·benzoate) (5), (cyclopentylammonium·adamantanecarboxylate) (6), (cyclohexylammonium·adamantanecarboxylate) (7) (cyclododecylammonium·adamantanecarboxylate) (10) a type IIhydrogen column consists repeating R34(10) rings whereas (cycloheptylammonium·benzoate) (3), (cyclooctylammonium·benzoate) (4), (cycloheptylammonium·adamantanecarboxylate) (8), (cyclooctylammonium·adamantanecarboxylate) (9) IIIhydrogen column, alternating R24(8)/R44(12) rings. Even with sterically different anions, formed is same for each counter cation hence it size that influences column. From this we can gather clues about effect steric anion its on overall packing.