Zusammenfassung
The reaction of 2 equiv. phosphorus ylides, (C6H5)(3)PCHC(O)C6H4R (R -=
CH3 (L1), Br (L2), Cl (L3), NO2 (L4) and OCH3 (IS)) with 1 equiv. AgNO3
using methanol as solvent leads to formation of linear mononuclear Ag-CH
complexes, \RC6H4CO\(C6H5)(3)P\CH\(2)Ag(NO3), (R = CH3 (C1), Br
(C2), Cl (C3), NO2 (C4) and OCH3 (C5)), which contain one NO3 and two
phosphorus ylides coordinated via the ylidic carbon atom. The silver
complexes were synthesized and investigated by elemental analysis,
Fourier transform infrared spectroscopy (FUR), multinuclear (H-1, P-31
and C-13) Nuclear magnetic resonance (NMR). In addition, the identities
of complexes Cl and C3 were unequivocally determined by single crystal
X-diffraction techniques. X-ray single crystal diffraction studies show
that both complexes C1 and C3 belong to the triclinic crystal system and
P-1 space group. This crystal packing of structures shows a close
association between the nitrate anion and the metal centre. The Ag(I)
atom is located in a slightly distorted linear environment, surrounded
by C atoms of the methine of the ylide.
Nutzer