Citation: Sang Ho Lim; Marilyn M. Olmstead; Alan L. Balch (2011). Molecular Accordion: Vapoluminescence and Molecular Flexibility in the Orange and Green Luminescent Crystals of the Dimer, Au2(\m-bis-(diphenylphosphino)ethane)2Br2. Journal of the American Chemical Society, 133, pp. 10229-10238.