PPh 3] Cl (2),[Ni (L3) PPh 3](3), and [Ni (L4) PPh 3](4)(where L1= 2, 3, 4-
trihydroxybenzaldehyde-4-methyl-3-thiosemicarbazone, L2= 2, 3, 4-trihydroxybenzaldehyde-
4-ethyl-3-thiosemicarbazone, L3= 2, 3, 4-trihydroxybenzaldehyde-4-phenyl-3-
thiosemicarbazone, and L4= 2, 3, 4-trihydroxybenzaldehyde-4-(4-ethylphenyl)-3-
thiosemicarbazone) were synthesised. All compounds were characterised using FT-IR, 1 H …