The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: cis-Dichlorobis(pyridine)platinum(II)( cas:15227-42-6 ) is researched.Name: cis-Dichlorobis(pyridine)platinum(II).Martin, Marilyn; Krogh-Jespersen, Mary Beth; Hsu, Martha; Tewksbury, John; Laurent, Michel; Viswanath, Kasi; Patterson, Howard published the article 《Multistate luminescence, absorption and MCD studies of the relative energies of d → d, d → π*, and n,π → π* transitions for the cis and trans isomers of dichlorobis(pyridine)platinum(II)》 about this compound( cas:15227-42-6 ) in Inorganic Chemistry. Keywords: UV luminescence platinum chloride pyridine; magnetic CD platinum chloride pyridine. Let’s learn more about this compound (cas:15227-42-6).
Luminescence, absorption, and magnetic CD (MCD) experiments are reported for cis- and trans-dichlorobis(pyridine)platinum(II). For the trans isomer, an anal. of the temperature dependence of the lifetimes and luminescence intensities indicates that emission at 605 nm is from 2 excited π* states separated by 240 cm-1. For the cis isomer, time-resolved spectroscopy allowed observation of 2 emission bands at 600 and 700 nm, which were assigned from their lifetimes to π* → d and d → d transitions, resp. Further, temperature dependent lifetime studies show that the 600-nm band (π* → d) is from 2 electronic states separated by 200 cm-1. The absorption spectra of both isomers were measured at room and low temperatures in solution, in glasses, and in KCl pellets. From a comparison with the pyridine and Pt(NH3)2Cl2 absorption and MCD spectra and MO calculations, the observed absorption bands for Pt(py)2Cl2 are assigned as d → d, d → π*, and n, π → π* transitions. For the cis isomer the lowest unoccupied mol. orbital is a d metal orbital.
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Reference:
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