James C. Chang

James Chang

Retired from the Department of Chemistry and Biochemistry
University of Northern Iowa
Cedar Falls, IA 50614-0423

Degrees

  • B.S., 1957, Mount Union College
  • Ph.D., 1964, U.C.L.A.

Research Interests

My areas of research are:

  1. Kinetics of substitution of transition-metal complexes. In the past I have been studying the kinetics of aquation of chromium(III) complexes such as those with the general formula [CrXY(N)4]n+ type, where (N)4 represents four nitrogen atoms from amine ligands. The most recent project concerns the effect of size of leaving groups on the rates of aquation. The next immediate project will involve the synthesis of cobalt(III) complexes of the types [Co(OA)2(en)2]+ and [Co(OA)(NH3)5]+ (en is 1,2-diaminoethane and OA is a carboxylic acid anion) from the carbonato-complexes, [Co(CO3)(en)2]+ and [Co(CO3)(NH3)5]+, and the kinetics of aquation of these complexes.

  2. Synthesis of transition-metal complexes with potential antimicrobial activities. For the past four years I have also been involved in the synthesis and characterization of transition-metal complexes with potential antimicrobial activities. These compounds are nickel(II), copper(II), and zinc(II) complexes of substituted benzaldehyde-2-furanthiocarboxyhydrazones and Schiff bases derived from amino acids and substituted benzaldehydes. The projects will involve the preparation of the organic ligands and the metal complexes, also characterization of these compounds by infrared spectra, NMR spectra, electrical conductivity, and magnetic susceptibility whenever applicable. Testing of these compounds against micro-organisms will be in collaboration with either Dr. Simet of our department or Dr. Jurgenson of the Biology Department.

Selected Publications

The Reaction of Some Pentaammine(o-substituted benzoato) chromium(III) Cations, Polyhedron 1987, 6, 1153.

Synthesis, Characterization, and Antimicrobial Studies of Copper(II) Nickel(II), and Zinc(II) Complexes with o-Methoxybenzadehyde-2-furan-thiocarboxyhydarzone, 2-Furaldehyde-2-furanthiocarboxyhydrazone, and 5-Nitro-2-furaldehyde-2-furanthiocarboxyhydrazone, Synth. React. Inorg. Met.-org. Chem., 1988, 18, 657.

Synthesis and Characterization of Copper(II) and Zinc(II) Complexes of Schiff Bases Derived from Amino Acids and 2,4-Dihydroxybenzaldehyde, Synth. React. Inorg. Met-Org. Chem. 1991, 21, 897.

Copper (II) and Zinc (II) Complexes of Schiff Bases Derived From Amino Acids and o-Vanillin, Synth. React. Inorg. Met.-Org. Chem., 1994, 24, 623-630.

Synthesis and Characterization of Amino Acid Schiff Base Complexes of NiCII, Synth. React. Inorg. Met-Org. Chem., 1994,24,1091-1097.

Department of Chemistry and Biochemistry
University of Northern Iowa
1227 West 27th Street
Cedar Falls, IA 50614-0423
Phone: 319-273-2437
FAX: 319-273-7127
E-mail: barbara.reid@uni.edu
Web: http://www.chem.uni.edu

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