Thiosemicarbazonates of silver(I) : synthesis, spectroscopy and reactivity towards triphenylphosphine
Tarlok S.Lobana*, Gaurav Bhargava , Vinay Sharma & Manoj Kumar*
The new tripodal ligand tris-[{2-benzaldehyde}-oxoethyl}amine]-thiosemicarbazone, N[CH2-CH2-O-{o-C6H4-CH=N- NH-C(=S)-NH2}]3 (abbreviated as H3L) on reaction with silver(I) acetate in 3:1 (M:L) mole ratio in ethanol formed {Ag5L(OAc)2} (1), which in presence of excess triphenylphosphine (PPh3) in chloroform–ethanol mixture yielded, {Ag5L(OAc)2(PPh3)12}(2) ( L is deprotonated) . Similarly reactions of silver(I) acetate with salicylaldehyde thiosemicarbazone (H2stsc), furan-2-carbaldehyde thiosemicarbazone (Hftsc) and pyrrole-2-carbaldehyde thiosemicarbazone (Hptsc) in presence of PPh3 in ethanol-chloroform formed [AgL(PPh3)n] complexes (3-5)[L (n) = Hstsc (1); ftsc (3); ptsc (4) ; thiosemicarbazones are monodeprotonated]. The complexes (1-5) have been characterised by their physical properties, analytical data , IR and UV spectroscopic studies.
Indian Journal of Chemistry
Vol. 42A, February 2003, pp 313-317
Tarlok S.Lobana*, Gaurav Bhargava , Vinay Sharma & Manoj Kumar*
The new tripodal ligand tris-[{2-benzaldehyde}-oxoethyl}amine]-thiosemicarbazone, N[CH2-CH2-O-{o-C6H4-CH=N- NH-C(=S)-NH2}]3 (abbreviated as H3L) on reaction with silver(I) acetate in 3:1 (M:L) mole ratio in ethanol formed {Ag5L(OAc)2} (1), which in presence of excess triphenylphosphine (PPh3) in chloroform–ethanol mixture yielded, {Ag5L(OAc)2(PPh3)12}(2) ( L is deprotonated) . Similarly reactions of silver(I) acetate with salicylaldehyde thiosemicarbazone (H2stsc), furan-2-carbaldehyde thiosemicarbazone (Hftsc) and pyrrole-2-carbaldehyde thiosemicarbazone (Hptsc) in presence of PPh3 in ethanol-chloroform formed [AgL(PPh3)n] complexes (3-5)[L (n) = Hstsc (1); ftsc (3); ptsc (4) ; thiosemicarbazones are monodeprotonated]. The complexes (1-5) have been characterised by their physical properties, analytical data , IR and UV spectroscopic studies.
Indian Journal of Chemistry
Vol. 42A, February 2003, pp 313-317
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