4-Ethylphenol

Abstract

The title compound, C8H10O, crystallizes with three mol­ecules in the asymmetric unit. O—H⋯O hydrogen bonds form cooperative chains connecting the mol­ecules along [100]. On the unitary graph level, this pattern is assigned a DDD descriptor. The ternary descriptor is C 3 3(6).

Polymorphism of 1,3-X-adamantanes (X = Br, OH, CH3) and the crystal plastic phase formation ability

“…It may be noticed that these halogen halogen contacts are not present in the mono substituted 1-bromoadamantane. [25,33] As for 13DOHA, the structure of the low-temperature ordered hexagonal phase II displays a P6 3 /mcm (Z=6) space group, with a=b=11.9118(6) Å, c=10.9590(7) Å at 294 K). The molecules are localized on the two a-b and a-c mirrors given rise to a structure of high symmetry with Z'=0.25.…”

“…[56] On the contrary, 13DBrA exhibits only the solid-liquid phase transition in the 90 -390 K range (melting temperature at 382.1±0.3 K), with an entropy change of (3.37±0.04)R, in agreement with the Timmermans' criterion (i.e., higher than 2.5R). It should be noticed that related mono-brominated adamantane derivatives, as 1-bromoadamantane (C 3v molecular symmetry) [33] and 2bromoadamantane (C s molecular symmetry) [24], do present a plastic phase before melting. The pressure-dependence of the solid-solid phase transitions and the melting process are shown in Figure 1.…”

“…[22] Simple substituted at either 1-(tertiary carbon) or 2-(secondary carbon) positions of adamantane show a rich polymorphic behaviour that has largely been characterized. [23][24][25][26][27][28][29][30][31][32][33] Many, but not all, of these substituted compounds display a plastic phase. Moreover, the existence of a hydrogen bonding scheme is not a condition to preclude orientational disorder [23,[34][35][36][37].…”

The crystal structure of 2,6-difluorophenol, C6H4F2O

“…Elucidating the coordination behaviour of various phenol in dependence of pH-value and substitution pattern it seemed of interest to determine the crystal structure of the title compound to enable comparisons with metric parameters in envisioned coordination compounds. Recently, the molecular and crystal structures of 2-hydroxy-5-methylisophthalaldehyde [12], 3,5-dimethylphenol [13], 2,3,4,5,6-pentabromophenol [14] and 4-ethylphenol [15] have been determined. The structures of 2,6-dichlorophenol [16] and 2,6-diiodophenol in a co-crystal [17] are apparent in the literature next to the structure of the title compound co-crystallized with a 4-alkoxystilbazole [18].…”

The crystal structure of 2,6-dimethyl-4-nitro-phenol, C8H9NO3

“…towards sodium [11]) have been observed and secured based on structural studies conducted on single crystals. In continuation of our interest in structural features of derivatives of phenol [12][13][14][15][16] the molecular and crystal structure of the title compound was elucidated.…”