4.7- Diphenyl-1,10-phenanthroline

The synthesis of [3]- (figuratively shown as 7) and a [5]rotaxane (8) with one central and two terminal porphyrins in the open configuration has been reported <96AG(E)906> also a rotaxane with two Ru(terpy>2 stoppers has appeared <96CC1915>. A pseudorotaxane comprised of a macroring of 2,9-diphenyl-1,10-phenanthroline unit and a molecular string... 

Chan, C.-W., Wong, W.-T. and Che, C.-M. (1994) Gold(lll) photooxidants. Photophysical, photochemical properties, and crystal structure of a luminescent cyclometallated gold(lll) complex of 2,9-diphenyl- 1,10-phenanthroline. Inorganic Chemistry, 33, 1266-1272. 

In contrast, the complex [Cu (N N)2] gave no ESR signs for rapid electron hopping between the two N N = 2,9-diphenyl-1,10-phenanthroline ligands— probably as a result of the nearly orthogonal arrangement of the ligand n systems... 

An example of this type of behavior can be drawn from a study of the bimolecular quenching of the MLCT emission from the 2,9-diphenyl-1,10-phenanthroline (dpp) complex Cu(dpp) by a series of electron and/or... 

The multidcntate ligand, possessing two terpyridine moieties and a 2,9-diphenyl-1,10-phenanthroline fragment, was cyclized under high-dilution conditions with Ru(DMSO)4Cl2 to give the 29-membered macrocycle 21, as well as the corresponding dimer 22. Macrocycle 21... 

Since tetrathiafulvene (TTF) is well known to be a good electron donor (reversibly oxidized at 0.30 V vs SCE) as well as the inherent chemical stability of its cation radical, it was incorporated into a macrocycle possessing the 2,9-diphenyl-1,10-phenanthroline subunit, previously described by Sauvage and his coworkers the Cu(I) [2]-catenate was synthesized and characterized <94TL4339>. 

The effect of interlocking on the properties of molecules is dramatic. For example, the basicity of the 2,9-diphenyl-1.10-phenanthroline unit is enhanced by several orders of magnitude when it is present in a [2]catenand. The proton catenate displays a similar molecular structure to that of the corresponding copper(I) catenate, whereas that of the catenand is completely different. The special topology of the catenands and knots makes them unique ligands, with strong complexes being formed with a variety of metal ions. ° ... 

Another system, in which the porphyrins arc assembled via chelation of a pendant ligand to a transition nicial. is shown in Figure 50. Bis-porphyrin conjugales bridged hy a 2,9-diphenyl-1,10-phenanthroline (dpp) chelate like 90 were assembled at a Cu(l) center, which forms extremely. stable complexes with dpp-based ligands. The resulting... 

Figure SO. A covalent bis-porphyrin dimer bridged by a 2,9-diphenyl-1,10- phenanthroline chelate (90) and the dimer (91) of its Zn(ll)/ Au(lll) complex formed by coordination to a Cu" center.

The first approach is to use copper(I) to thread a linear multinitrogen-donor molecule, such as the 2,9-diphenyl-1,10-phenanthroline [177] derivative L1059 [178]... 

Diphenyl-1,10-phenanthroline, D-01032 3,8-Diphenyl-1,10-phenanthroline, D-01033 4,7-Diphenyl-1,10-phenanthroline, D-01034... 

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