Complex formation between D-lactobionate and bivalent metal ions. Studies in solution and in the solid state
Frutos, AA; Escandar, GM; Peregrin, JMS; Sierra, MG; Sala, LF
| HERO ID | 4947691 |
|---|---|
| In Press | No |
| Year | 1997 |
| Title | Complex formation between D-lactobionate and bivalent metal ions. Studies in solution and in the solid state |
| Authors | Frutos, AA; Escandar, GM; Peregrin, JMS; Sierra, MG; Sala, LF |
| Journal | Canadian Journal of Chemistry |
| Volume | 75 |
| Issue | 4 |
| Page Numbers | 405-413 |
| Abstract | The equilibrium reactions between deprotonated D-lactobionic acid (4-O-beta-D-galactopyranosyl-D-gluconic acid) and cobalt(II), nickel(II), copper(II), zinc(II), cadmium(II), and mercury(II) have been studied by potentiometric and spectrophotometric methods in aqueous solution. All measurements have been carried out at a temperature of 20.0 +/- 0.1 degrees C and at an ionic strength of 0.100 M (NaNO3) with the corresponding stability constants calculated by applying computational methods. The interactions between the proposed cations with deprotonated D-lactobionic acid were compared with those corresponding to D-gluconic acid. Compounds of type: Co(C12H21O12)(2) . 2H(2)O . C2H5OH, Ni(C12H21O12)(2) . 2H(2)O . C2H5OH, Cu(C12H21O12)(2) . 2H(2)O . C2H5OH, Zn(C12H21O12)(2) . 2H(2)O . C2H5OH, and Cd(C12H21O12)(2) . 2H(2)O . 0.5C(2)H(5)OH have been isolated. These metal-sugar salts were characterized by elemental, thermogravimetric, and susceptibility analyses and FT-IR, UV-visible absorption, diffuse reflectance, and C-13 NMR spectroscopies. |
| Doi | 10.1139/v97-046 |
| Wosid | WOS:A1997XD81400006 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | D-lactobionate; metal complexes; equilibrium constants; potentiometry; solid state studies |