A new polymorph of N-(prop-2-yn-yl)tricyclo-[3.3.1.1]decane-1-carbox-amide.

ABSTRACT: The alkynyl bond of the title compound, C(14)H(19)NO, has a length of 1.170?(5)?Å. The amide function shows a trans conformation with respect to the carbonyl group characterized by the torsion angle O-C-N-H of -176?(2)°. There is an inter-molecular N-H?O hydrogen bond between the amide function and the carbonyl group. In addition, weak inter-molecular hydrogen bonds stabilize the crystal structure. A comparison with a polymorphic structure shows conformational differences with regard to the orientation of the carbonyl groups with respect to the adamantyl group [O-C-C-C = 96.2?(3)° in the title compound and 123.7?(2)° in the polymorph] and the orientations of the propargyl groups in relation to the carbonyl groups [O-C-C-C = -87.7?(3) and -58.7?(2)°, respectively].

SUBMITTER: Frey W 

PROVIDER: S-EPMC2962125 | biostudies-literature | 2008 Jul

REPOSITORIES: biostudies-literature