Metal emission spectra from transition

Therefore, this low-energy band is assigned to a metal-centered d->p transition instead of as arising from Au---Au interactions. The solid-state luminescence spectrum (Fig. 25) exhibits a phosphorescence emission band centered at 417 nm. This value compares favorably with those reported for solids K[Au(CN)2]58 and Au2(dmb)(CN)2.63... 

W(N2)2(dppe)2(dppe) = 1, 2-bis(diphenylphosphino)ethane [1]. This molecule is distorted along 13 normal modes caused by a metal to dppe charge transfer transition. It provides a good example of the use of the time-dependent theory to calculate distortions from an emission spectrum. It shows an actual example of the effect of small A s on the overall shape of the spectrum (see Section IIl.E.l). It also provides a dramatic illustration of how the temperature and the medium surrounding the molecule affect the resolution and hence the interpretation. 

The photochemistry of CpTl in methanol has been reported, and absorption bands at 228 and 280nm have been assigned to ligand to metal charge transfer and a metal-centred lone-pair to vacant p-orbital transition, respectively. The emission spectrum consists of a band at 360nm, which is assumed to be from the lowest sp state. Both CpTl and MeCpTl have been used to deposit TI2O3 in an MOCVD experiment. 

Spectral bands of an aquated lanthanide ion arising from vibronic contributions were reported first by Haas and Stein (1971) in their study of the emission spectrum of aquated Gd. These bands are termed vibronic because they arise from a simultaneous change in the electronic state of the metal ion and the vibrational state of a coordinated ligand. Stavola et al. (1981) noted additional examples of such bands and presented a theoretical model based on the importance of electronic factors for calculating the intensities of lanthanide-ion vibronic transitions. Their theoretical model also predicts selection rules for such transitions. The intensities of observed bands assigned by these workers as being vibronic typically were at least 50 times weaker than the parent purely electronic band. Faulkner and Richardson (1979) have... 

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