Primary reactions in the photochemistry of hexahalide complexes of platinum group metals: A minireview

Primary photochemical processes for PtCl62− complex in acetonitrile solutions

“…Experiments on ultrafast kinetic spectroscopy allowed us to construct the mechanism of electron transfer with the participation of the key intermediate interpreted as the primary Adamson radical pair [Pt III Cl 5 2-(C 4v )Á Á ÁCl ]. As we mentioned in [19], intermediates postulated for Pt IV Cl 6 2À photolysis should be verified against high-level quantum chemical calculations.…”

“…The photochemistry of this complex is solvent-dependent (see [19] and references there). In aqueous solutions, the integral photochemical process is photoaquation with the formation of the Pt IV Cl 5 (H 2 O) À complex as primary photoproduct [20][21][22][23][24][25][26][27].…”

“…(18) at bh << 1 with Eqs. (19) and (20), we obtain DA ¼ as ex fh ð21Þ Using Eq. (18) to fit the dependence in Fig.…”

Short-lived intermediates in photochemistry of an OsCl62− complex in aqueous solutions

“…7. The XMCQDPT (10,8)/SBKJC in the gas phase in the triplet and quintet states are shown in Fig. 7 as vertical green and black lines.…”

“…Recently, we have reviewed the efforts in studying primary photophysical and photochemical processes for hexahalide complexes of tetravalent ions of platinum group metals (see ref. 10 and references there). Five complexes of this type were the subjects of femtosecond studies, namely, Pt IV , Ir IV Br 6 2− , and Os IV Br 6 2− .…”