Deuterated ligands

The most characteristic feature, however, will be observed in the structure of the vibrational satellites. The change of the electronic charge distribution due to an electronic transition is experienced by the whole molecule, in particular of both the deuterated and the protonated ligands. Thus, the emission spectrum will exhibit ligand satellites of both protonated and deuterated ligands. It is very important that these satellites belong to the same electronic 0-0 transition. 

It is important that, according to Fig. 25, the information concerning the correspondence of high frequency vibrations of the deuterated ligand relative to those of the protonated figand is available. A similar correlation has also been carried out for those vibrational modes that are Franck-Condon active with respect to the emission from state II, for details see Ref. [23]. 

Given a dimeric structure of type 1, like that of phenyllithium (R = C6Hs) in the presence of tetramethylethylene diamine (TMEDA) [71], and a 1 1 mixture of deuterated and non-deuterated ligands R (d and h, respectively), the Li environments 2-4 exist ... 

Figure 4 Statistical distribution of deuterated and non-deuterated ligands in simple organolithium aggregates (a) monomer (b) dimer (c) static tetramer (d) fluxional tetramer...

Deuterated ligand and GroEL form a complex in Dp solution. 

Figure 9. H NMR spectra (293 K) of chromiuni(lll)-salen complex 12 in dilTcrcnt solvents saturaiciJ solution in CH CN (a) saturated solution in CHjCI (b) in CH CI>-DMF (2 1) mixed solvent (c) Asterisks mark peaks of residual deutcrons of the solvents. It is seen that the deuterated ligand is not readily soluble in C HjCI and CHjCN...

The deuterated ligand was dried and reacted vyith bis(l,5[Pg.385]

For heteroleptic complexes the question may arise whether an independent emission of the different ligands may occur. For example, several authors reported the occurrence of such a dual emission . Obviously, for [Pt(bpy-hg) (bpy-dg)] " a dual emission does not appear. Apparently, the rate Pd a of energy transfer from the deuterated ligand (donor D) to the protonated one (acceptor A) is much larger than the decay rate rih of the fast decaying sublevel of the deuterated ligand. Thus, P -a = 5 10 s (from Table 1). This value, pre-... 

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