The Cyclo-Addition Reaction of Lh3 (1) With Chloroacetyl Chloride In the Presence of Et3n In Dioxane Affords the Corresponding Azetidin-2-One, L'h3 (8). the Reaction of 8 With Cu(Ii), Cd(Ii), Mn(Ii), Fe(Iii) and Moo2(Vi) Ions In Meoh Results In the Formation of Corresponding Coordination Compounds, [Cu(Oac)(L'h2)] (9), [Cd(Oac)(L'h2)] (10), [Mn(Oac)(L'h2)(Meoh)2] (11), [Fecl2(L'h2)(Meoh)] (12) and [Moo2(Acac)(L'h2)(Meoh)] (13). the Compounds Have Been Characterized on the Basis of Elemental Analyses, Molecular Weight, Molar Conductance, Spectral (Ir, Reflactance, Esr) and Magnetic Susceptibility Measurements. 8 Acts As a Monobasic Tridentate Ono Donor Ligand In These Monomeric Compounds. a Square-Planar Structure For 9, a Tetrahedral Structure For 10 and an Octahedral Structure For 11 and 12 Have Been Proposed. 13 Affords an Eight-Coordinate Structure.