Publications [#233447] of Andrew T. McPhail

Journal Articles

  1. Engel, JF; McPhail, AT; Miller, RW, "Synthesis and X-Ray Crystal Structure of a New Potent Pyrethroid Acid, (±)-cis-3-[(Z)-2-Chloro-3,3,3-trifluoroprop-1-enyl]-2,2-dimethylcyclopropanecarboxylic Acid", J. Chem. Soc. Perkin I, 1983(8), 1737-1740, Royal Society of Chemistry (RSC) [Gateway.cgi], [doi].
    (last updated on 2026/01/21)

    Abstract:
    Single-crystal X-ray analysis of the title compound has established its structure and molecular geometry. Crystals are monoclinic, space group P2 1-/c, with a = 9.487(4), b = 8.009(4), c = 16.214(6) Å, β = 119.91 (1)°, Z = 4. The structure was solved by direct methods and refined by full-matrix least-squares calculations to R 0.056 over 1 242 reflections measured by diffractometer. The crystals contain centrosymmetric hydrogen-bonded dimers (O ⋯ O 2.65 Å) in which the carboxy and vinyl substituents are in a ' bisecting ' orientation, and the C=O group and one of hydrogen atoms on each methyl group point over the cyclopropane ring. The bond lengths in the ring reflect the substitution pattern.