Department of Chemistry, Jamal Mohamed College, Tiruchirapalli-620 020, India

The new complexes of oxovanadium(IV), thorium(IV) and
dioxouranium(VI) with N-(1-piperidinobenzyl) urea (PBU) and
N,N'-bis(N-morpholinobenzyl) urea (MBU) have been synthesised
and characterised by elemental analysis, molar conductance, magnetic
susceptibility, electronic, IR, ¹H NMR and thermal studies.
From the IR and PMR spectral data, the ligands, are suggested to
behave as O, N donors. PBU coordinates through N atom of
piperidine ring and O atom of urea fragment while MBU acts as a
tridentate ligand coordinating through N atoms of two morpholine
rings and O atom of urea moiety. The complexes have also been
screened in vitro for antibacterial activities.