Mason W R
Department of Chemistry and Biochemistry, Northern Illinois University, DeKalb, Illinois 60115, USA.
Inorg Chem. 2001 Nov 19;40(24):6316-9. doi: 10.1021/ic010578p.
Electronic absorption and 8.0 T magnetic circular dichroism (MCD) spectra are reported for Pt(P(t-Bu)(3))(2) in 2-methylpentane solutions at 295 K and in glasses at 80 K. The intense bands observed in the 2.4-5.0 microm(-1) (1 microm(-1) = 10(4) cm(-1)) region are assigned as 5d --> 6p/metal-to-ligand charge-transfer transitions to dipole-allowed Sigma(u)(+) and Pi(u) spin-orbit states of 5d(10) --> 1pi(u) excited configurations. The enhanced resolution of the spectra at low temperatures reveals several previously unresolved spectral features in both absorption and MCD spectra, which strengthen the assignments and relative orbital energy ordering concluded from them.
报道了295 K下2-甲基戊烷溶液中以及80 K下玻璃态中Pt(P(t-Bu)(3))(2)的电子吸收光谱和8.0 T磁圆二色性（MCD）光谱。在2.4 - 5.0微米⁻¹（1微米⁻¹ = 10⁴厘米⁻¹）区域观察到的强吸收带被归属为5d→6p/金属到配体的电荷转移跃迁，跃迁到5d¹⁰→1πu激发组态的偶极允许的Σu⁺和πu自旋轨道态。低温下光谱分辨率的提高揭示了吸收光谱和MCD光谱中一些先前未分辨的光谱特征，这加强了基于这些光谱特征得出的归属以及相对轨道能量排序。
