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The crystal structure of α-phenylselenomethoxycarbonylmethyl(triphenyl)arsorane, [Ph3AsC(COOCH3)SePh], has been determined by X-ray diffraction. The compound is a stable α-organoselenoarsonium ylide. Delocalization of electronic density appears to be restricted from atoms O(1) to Se including the As atom. The As—C(1) and Se—C(1) bonds have double-bond characteristics.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks text, jz1054a

CCDC reference: 126217

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