Reaction of [Au(C
6F
5)(tht)
2Cl](OTf) with RaaiR′ in CH
2Cl
2 medium leads to [Au(C
6F
5)(RaaiR′)Cl](OTf) [RaaiR′ =
p-R–C
6H
4–N=N–C
3H
2–NN-1-R′,
(1–3), abbreviated as
N,N′-chelator, where N(imidazole) and N(azo) represent
N and
N′, respectively; R = H (
a), Me (
b), Cl (
c) and
R′ = Me
(1), CH
2CH
3
(2), CH
2Ph
(3), tht is tetrahydrothiophen]. The maximum molecular peak of [Au(C
6F
5)(MeaaiMe)Cl] is observed at
m/z 599.51 (100 %) in the FAB mass spectrum. Ir spectra of the complexes show –C=N– and –N=N– stretching near at 1590 and 1370 cm
−1 and near at 1510, 955, 800 cm
−1 due to the presence of pentafluorophenyl ring. The
1H-NMR spectral measurements suggest methylene, –CH
2–, in RaaiEt gives a complex AB type multiplet while in RaaiCH
2Ph shows AB type quartets.
13C-NMR spectrum of complexes confirm the molecular skeleton. In the
1H-
1H-COSY spectrum as well as contour peaks in the
1H-
13C HMQC spectrum for the present complexes, assign the solution structure and stereoretentive conformation. The electrochemistry
gives the ligand reduction peaks.