An n‒>pi^*^ interaction reduces the electrophilicity of the acceptor carbonyl group
Amit Choudhary; Charles G. Fry; Kimberli J. Kamer; Ronald T. Raines; Chem.Commun. 49 (2013) 8166–; doi:10.1039/c3cc44573a

data_7109728
_publ_section_title
;
 An n-->pi^*^ interaction reduces the electrophilicity of the acceptor
 carbonyl group
;
_journal_name_full               Chem.Commun.
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manual editing of the CIF file 
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 w=1/[\s^2^(Fo^2^)+(0.0616P)^2^+0.4217P]
 where P=(Fo^2^+2Fc^2^)/3
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