Triazines bridging ligands

Although the cyclic voltammetry for this complex seems fairly similar to the trinuclear ruthenium cluster dimers, the lower-lying LUMO (as evidenced by the lower reduction potential) of the triazine bridging ligand plays an important role in explaining the details of the spectroelectrochemistry observed for this LCD. The CO stretching frequency of the neutral complex appears at 1940 cm Upon application of— 1.050 V (vi. Ag pseudoreference, roughly 0 to... 

Electronic properties related to the semiconductivity of monomers and polymers of phthalocyanoruthenium with bidentate bridging ligands, [PcRu(L2)] and [PcRu(L)] , have been investigated using density functional calculations (L = pyrazine, triazine, tetrazine, etc.) <2001JMT(579)169>. The electronic structures of one-dimensional... 

Triazine acts as a bridging ligand between [Ru2(02CPh)4] molecules to give a 2-dimensional coordination polymer. Suggest how triazine coordinates to [Ru2(02CPh)4], and predict the stmcture of the repeat motif that appears in one layer of the structure of the crystalline product. 

A nontrivial synthetic approach to multinuclear cyanide-bridged clusters was developed by Comba and co-workers (208), who used ligand XXII capable of encapsulating up to three Cu(II) ions inside the cyclam macrocycles connected to the central triazine ring. In this case, the very nature of the building block promotes the formation of high nuclearity complexes. Indeed, when the [Cu°3(XXII)] ... 

Lu atom (Lu-N 2.352(4) A). The formation of the dianion complex apparently proceeds by nucleophilic addition of the imido unit to the C N group of benzoni-trile, which demonstrates that a lanthanide-imido bond, even in a bridging form, is very reactive. This is in contrast with what was observed previously for bonds between transition metals and bridging imido ligands, which are usually robust and unreactive. Moreover, the resultant product represented the first metal complex of an amidinate dianion, in contrast to the well-known complexes of various metals with amidinate monoanions [RNC(R0NR] as ligands [6,7]. The dianion complex and related complexes derived from imido lanthanide species react with excess of benzonitrile under selective formation of the cyclotrimerization product 2,4,6-triphenyl-1,3,5-triazine [72]... 

---