Spectral Studies of Polymer Supported Chelates

Abstract

The reaction between polystyrene 3-formylsalicylate and 2-Aminobenzylalcohol in DMF in the presence of ethyl acetate results in the formation of polystyrene N-(2-hydroxymethylphenyl)-2'-hydroxybenzylideneimine-3'carboxylate (I). A benzene suspension of I reacts with mercaptoacetic acid undergoes cyclization and forms polystyrene N-(2-hydroxymethylphenyl)-C-(3'-carboxy-2'-hydroxyphenyl)thiazolidine-4-one, PSCH2-LH2 (II). A DMF suspension of II reacts with Mn(II) and Cd(II) ions and forms the corresponding polystyrene-anchored coordination compounds, [PSCH2-LHMn(OAc)(DMF)3] (III) and [PSCH2-LHCd(OAc)(DMF)] (IV). The polystyrene-anchored coordination compounds have been characterized on the basis of elemental analyses, spectral (IR, reflectance) studies and magnetic susceptibility measurements. II behave as a monobasic bidentate OS donor ligand in the coordination compounds. An octahedral structure for III and tetrahedral structure for IV are suggested.

Preparation and Spectroscopic Characterization of Polymer-Supported Transition Metal Complexes

“…The magnetic moment of the compounds at room temperature are given in Table- [25]. [PSCH2-LZr(OH)2·2DMF] is diamagnetic as expected.…”

Simultaneous Quantification of Tiagabine and Its Related Substance by a Stabilityindicating Rp-HPLC Method

“…Due to the acidic nature of TBN, the maintenance of pH below and above the analyte's pKa will lead to the maintenance of analyte in unionized and ionized forms respectively. [23][24][25][26] Then, choose the mobile phase with acidic pH, by taking into consideration of the pKa value, solubility, and polarity of TBN and RS-A. A split in the peak was observed at pH 4.5 (Fig.…”