Silver complex compounds, with structure

Other polydentate ligands are polyamines and related ligands. Stability constants of silver(I) complexes with polyamines in dimethyl sulfoxide,419 A-methyl-substituted 4-methyldiethylene-triamines,420 or ethylene- or N- or C-methylated ethylenediamine in aqueous solution have been reported.421 The structure of the silver 1,3-diaminopropane complex, [Ag NH2(CH2)3NH2 ]-C104,422 and complex formation with 1,4-diaminobutane and 1,5-diaminopentane have been reported.423 A dinuclear silver(I) compound with ethylenediamine [(enH)Ag(en)Ag(enH)2]4+ has... 

Stable olefin complexes of metals containing fewer than two d electrons are not known. Complexes possessing d and d" electronic structures are numerous. In the case of [Ag(C2H4)] , it can be expected that the n back-bonding is not as important as in the Pt(II) complexes. This was confirmed by ab initio calculations carried out for the silver compound. They show that the most essential changes in the electronic structure of ethylene in the silver complex are caused by polarization effects which are induced by the positive charge of the silver atom. The olefin-metal bonding orbital has only 6.5% contribution of the 5 Ag orbital. This result was confirmed by ESR measurements carried out for olefin silver complexes irradiated with y-rays. Based on... 

Planar coordination compounds with aromatic ligands, especially those having extended 7r-systems, show 7r-7r interactions in the solid state. The ligands shown in Figure 8 form complexes with silver(I) which have a supramolecular structure through 7r-7r interactions.586-596... 

Compound [25] was thus shown to have an unusual affinity for Ag+ cations. X-ray crystallographic determination of the structures of the free ligand, sodium and silver complexes were carried out and are shown in Fig. 17. The Ag-Fe distance in the silver complex of [25] is only 3.37 A, whereas the Na-Fe distance in the sodium complex is 4.39 A. This evidence together with the FAB MS data and UV spectroscopic data suggests that there may be an interaction between the silver cation and the iron present in the ferrocene moiety. 

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