Geometric Isomers of Platinum Coordination Compounds: An NMR Experiment for the Undergraduate Inorganic Chemistry Laboratory

TCE

The Chemical Educator

ISSN: 1430-4171 (electronic version)

Table of Contents

Abstract Volume 2 Issue 6 (1997), S1430-4171(97)06150-7

Geometric Isomers of Platinum Coordination Compounds: An NMR Experiment for the Undergraduate Inorganic Chemistry Laboratory

Georgia M. Arvanitis* and Karen L. Wilk

The College of New Jersey, Ewing, New Jersey 08628-0718

Published online: 24 December 1997

Abstract. This experiment illustrates the value of using NMR spectroscopy to study geometric isomers, and the synthetic utility of the trans effect in inorganic reaction mechanisms. The syntheses of cis- and trans-diamminedichloroplatinum(II) are carried out on a small scale, using both ¹⁴N and ¹⁵N ammine ligands. Students use ¹⁹⁵Pt and ¹⁵N NMR spectroscopies to study the coordination complexes prepared. The ¹⁹⁵Pt chemical shift is indicative of the metal’s coordination environment. Furthermore, the ¹⁹⁵Pt– ¹⁵N coupling constant is sensitive to the nature and geometry of the ligands bound to the metal, and this is also explored.

Key Words: Laboratories and Demonstrations; NMR; inorganic chemistry

(*) Corresponding author. (E-mail: arvanit@tcnj.edu)

Article in PDF format (95 KB )

Supporting Materials:

CHEM 455 Lab Procedure Handout (318 KB) 10.1007/s00897970150b