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Benzene-1,3,5-triyl tris-(2,2-dimethyl-propanoate).

ABSTRACT: In the title compound, C(21)H(30)O(6), the three acet-oxy groups are essentially planar with their normals rotated by -57.75?(4), -62.36?(4) and 63.36?(4)° from the normal to the mean plane of the C(6) ring. The arrangement of carbonyl groups around the ring is of two groups 'up' and one 'down', and the propeller-style arrangement of substituent groups is spoiled with the plane of the 'down' group twisted in the opposite direction; all the C(ring)-O-C-CMe(3 )conformations are trans. In the crystal, aromatic ?-? stacking occurs [centroid-centroid separation = 3.320?(1)?Å]; the other main inter-molecular inter-action is a C-H??-ring contact on the opposing side from the overlapped ring pairing; there are no short C-H?O contacts.

SUBMITTER: Haines AH 

PROVIDER: S-EPMC2971883 | biostudies-other | 2009

REPOSITORIES: biostudies-other

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Benzene-1,3,5-triyl tris-(2,2-dimethyl-propanoate).

Haines Alan H AH   Hughes David L DL  

Acta crystallographica. Section E, Structure reports online 20091128 Pt 12

In the title compound, C(21)H(30)O(6), the three acet-oxy groups are essentially planar with their normals rotated by -57.75 (4), -62.36 (4) and 63.36 (4)° from the normal to the mean plane of the C(6) ring. The arrangement of carbonyl groups around the ring is of two groups 'up' and one 'down', and the propeller-style arrangement of substituent groups is spoiled with the plane of the 'down' group twisted in the opposite direction; all the C(ring)-O-C-CMe(3 )conformations are trans. In the cryst  ...[more]

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