Pyrrolizin-3-one and its 1,2-dihydro derivative: structures of the free molecules determined by electron diffraction and ab initio calculations and in the crystal by X-ray diffraction†
Abstract
The molecular structures of pyrrolizin-3-one 1 and 1,2-dihydropyrrolizin-3-one 2 have been investigated in the gas phase by ab initio calculations (both compounds) and