Reactions of Zr(OPr n ) 4 and Zr(OBu n ) 4 with 3-pentenoic acid (PA) in 1:1 molar ratio were studied in propanol and butanol solution at room temperature by the sol-gel process. The complexations were investigated by 13 C{ 1 H}, 1 H-NMR and FTIR spectroscopy.

Tin and titanium pentenoate have been prepared from tin(IV) butoxide and titanium (IV) isopropoxide in alcohol and 3-pentenoic acid. Reactions of Sn(OBu n ) 4 and Ti(OPr i ) 4 with 3-pentenoic acid in 1:1 molar ratio were studied in butanol and propanol solution at room temperature by sol-gel process. The complexations were investigated by 13 C, 1 H-NMR and FT-IR spectroscopy. 13 C{ 1 H}, 1 H-NMR and FT-IR spectra showed that 3-pentenoic acid completely reacted with Sn(OBu n ) 4 and Ti(OPr i ) 4 . These new products were hydrolyzed by water in ratio of 1:4 [M(OR) 4 /H 2 O, M: Sn, Ti, R: butyl and isopropyl]. The stability of hydrolyzed products was investigated by 13 C, 1 H NMR and FT-IR. After hydrolysis, it was seen that no 3-pentenoic acid was released from [Ti(OPr i ) 3 (PA)] n and but was released from [Sn(OBu n ) 3 (PA)] n under the studied conditions.

Zinc(II) and nickel(II)-complexes of 5-methoxyisatin 3-[N-(4chlorophenyl) thiosemicarbazone] (H 2 MICP) were synthesized and characterized by infrared, ultraviolet and 1 H-NMR spectroscopies as well as elemental analysis. Model of H 2 MICP and its zinc(II) and nickel(II)-complexes were optimized with B3LYP method using 6-31G(d,p), 6-311G(d,p), 6-311++G(d,p), 6-311++G(2d,2p) basis sets. The calculated 1 H-NMR, UV and IR spectra data were compared with experimental results. In addition to the Natural Bond Orbital (NBO) analysis of H 2 MICP and its Zinc(II) and Nickel(II) complexes, Fukui functions of H 2 MICP were also reported.