We document soil and groundwater contamination caused by industrial airborne PFAS emission over an area of ∼200 km2 that has impacted over 1200 wells.

The implicit rigidity imparted by the alkene backbone in cisand trans-1,2-bis(diphenylphosphino)ethylene (dppee) has made

The crystal structures for cis‐(Ph2PCH=CHPPh2)(AuI)2 and trans‐(Ph2PCH=CHPPh2)(AuI)2 are reported. The structure of cis‐(Ph2PCH=CHPPh2)(AuI)2 reveals a short intramolecular Au–Au distance of 2.9526(5) Å, while the structure of trans‐(Ph2PCH=CHPPh2)(AuI)2 shows intermolecular Au–Au distances of 3.2292(7) Å. Structural data for the iodide complexes are compared to previously reported crystal structural data for cis‐ and trans‐(Ph2PCH=CHPPh2)(AuCl)2 and dppbz(AuCl)2. The quantum yields for the photochemical isomerization of cis‐(Ph2PCH=CHPPh2)(AuX)2 with 334‐nm light, Φ(cis → trans), are 0.204, 0.269, and 0.363 for X = Cl, Br, and I, respectively. Prior results from ab initio calculations on the model cis‐ and trans‐Au2X2C2H2(PH2)2 complexes aid in the interpretation of the correlation between the quantum yield for isomerization and the calculated aurophilic attraction potential V(Re). (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)

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