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- W1979330925 abstract "A series of gold(III) metalacycle of five-, six- and seven-membered ring was prepared by reacting Auric acid (HAuCl4 · 3H2O) with 1 equiv. unsubstituted ethylenediamine (en), propylene diamine (pn) and butylenediamine (bn) ligands and with some N-mono-substituted as well as N,N′-disubstituted ethylenediamine ligands. The general formula of these complexes is [Au(alkyldiamine)Cl2]Cl. These complexes are characterized by melting point and elemental analysis, while structural analysis was done by spectroscopic techniques such as UV–Vis, Far-IR, IR spectroscopy, 1H and 13C solution as well as 13C and 15 N solid-state NMR. The solid-state 15 N NMR shows that the chemical shift difference between free and bound ligand decreases as bn > pn > en, indicating stronger Au–N bond for bn complex compared to pn and en. UV–Vis shows relative stability of the Au(III) complexes of unsubstituted ethylenediamine with respect to N,N′-di-substituted ethylenediamine. Far-IR data show the six-membered metalacycle gold(III) alkanediamine complexes to be more stable. Spectroscopic data are evaluated by comparisons with calculated data of the built and optimized structure by gaussian03 at the RB3LYP level with LanL2DZ bases set." @default.
- W1979330925 created "2016-06-24" @default.
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- W1979330925 date "2009-07-01" @default.
- W1979330925 modified "2023-09-23" @default.
- W1979330925 title "Synthesis and characterization of gold(III) complexes with alkyldiamine ligands" @default.
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- W1979330925 doi "https://doi.org/10.1016/j.ica.2009.02.009" @default.
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