2,2 ,2"-Tris amine. ligand structure

Fig. 16 Structures of the redox catalyst tris(l,10-phenanthroline-5,6-dione) ruthenium(II) perchlorate 1 and the mixed ligand system consisting of l,10-phenanthroline-5,6-dione and one N,N, A-tris(aminoethyl)amine ligand 2...

The reaction in Eq. (22) is an example of the complete destruction of the original cluster the amine ligands on tin were replaced by tri(phenyl)siloxy groups with quantitative formation of the amine Me2Si[NtBu(H)]2, but the nickel-tin bonds are lost and bond fission was observed. Besides the formation of elemental tin, the di-nuclear complex [(Ph3Si 0)2Sn]2 was obtained as a white crystalline product and characterized unambiguously by an X-ray structure determination. 

In 2007, Finn and coworkers [52] reported a thorough study on the application of various types of amine ligands (e.g., tris(benzyltriazolylmethyl)amine (TBTA)) on the reaction kinetics. Some relationships between the ligand structure and their Cu-binding capabilities were observed. 

The coordination of tris(pyrazolyl)amine and bis(pyrazolyl)amine ligands toward [Rh(/r-Cl)(cod)]2 was studied and the crystal structure of the trimetallic compound Rh3Cl3(cod)3(tdma) was reported. Trispyrazolylborate ligands also provided a series of complexes of the type TpRh(LL) (LL = nbd or cod), whose NMR spectroscopic properties and structural features were studied. The fluxional behavior of complexes of formula Tp Rh(LL) (LL = nbd, 2CO, cod R = H, Me, Ph, Br) was studied by means of NMR spectroscopy. Two K -square-planar isomers and one re -pentacoordinated complex were observed. The structure of the complex K -Tp Rh(nbd) was confirmed by X-ray diffraction. The hapticity of the Tp ligand was also studied on the basis of the i B-H) obtained by IR spectroscopy. Reactions of [Rh(/r-Cl)(nbd)]2 with a series of bis- and tris(azolyl) methanes 388, 389, 390, 391, and 392 were also reported. ... 

Monomeric lithium enolates were rarely characterized by crystal structure analysis. It seems that prerequisite to monomer formation is an optimal solvation of the counterion lithium only if the metal is satisfied by a threefold, strong coordination by an external cosolvent, a monomeric enolate was detectable in the crystal state. This is illustrated by a crystal structure of the lithium enolate of dibenzyl ketone grown from a THF/diethyl ether solution containing the tri-dentate amine ligand A/ M M M" M"-pentamethyldiethylenetriamine (PMDTA), shown in Figure 3.4 [16a]. 

Bulk electrochemical reduction of the platinum(IV) complex of the tridentate ligand l,l,l-tris(aminomethyl)ethane(tame), [Pt(tame)2]4+, leads to the quantitative formation of [Pt(tame)2]2+ (28), in which one of the amine donor groups in tame remains noncoordinated.141 The X-ray structure of the diprotonated complex [Pt(Htame)2]4+, as its tetrachlorozincate(II) salt, is also reported. 

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