Trichloroacetaldehyde, Cl 3 CCH = O, forms a cyclic trimer analogous to paraldehyde. (a) Account for the
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Trichloroacetaldehyde, Cl3C—CH = O, forms a cyclic trimer analogous to paraldehyde.
(a) Account for the fact that two forms of this trimer are known (α, bp 223°C and mp 116°C; b, bp 250°C and mp 152°C).
(b) Which of your structures is likely to be the one with the higher melting point? Explain.
(c) Assuming you have in hand a sample of both forms, show how NMR spectroscopy could be used to verify your hypothesis in part (b).
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