Photoreduction of Pt(IV) Chloro Complexes: Substrate Chlorination by a Triplet Excited State
作者:Tharushi A. Perera、Mehdi Masjedi、Paul R. Sharp
DOI:10.1021/ic5009413
日期:2014.7.21
Except for 2 (R = Ph, 4-trifluoromethylphenyl), all of the Pt(IV) complexes are photosensitive to UV light and undergo net halogen reductive elimination to give Pt(II) products, trans-Pt(PEt3)2(R)(X) (X = Cl, Br). Chlorine trapping experiments with alkenes indicate a reductive-elimination mechanism that does not involve molecular chlorine and is sensitive to steric effects at the Pt center. DFT calculations
通过氯化三氯甲烷制备反式-Pt(PEt 3)2(Cl)3(R)2(R = Cl,Ph,9-菲基,2-三氟甲基苯基,4-三氟甲基苯基,3- perenylenyl )的Pt(IV)配合物。 Pt(II)与-Cl 2(g)或PhICl 2的反式-Pt(PEt 3)2(R)(Cl)1络合物。混合的溴-氯配合物反式,反式-Pt(PEt 3)2(Cl)2(Br)(R)(R = 9-菲基,4-三氟甲基苯基),反式,顺式-Pt(PEt 3)2(Cl)2(Br)(4-三氟甲基苯基),反式,反式-Pt(PEt 3)2(Br)2(Cl)(R)(R = 9-菲基)和反式,顺式-Pt(PEt 3)2( BR)2(Cl)的(4-三氟甲基苯基)通过卤化物交换或通过氧化加成的Br获得2至1或Cl 2至反式-Pt(PET 3)2(R)(BR)。除2(R = Ph,4-三氟甲基苯基)外,所有Pt(IV)配合物均对紫外光敏感