University of Illinois Urbana-Champaign

Redox active metal-sulfide clusters and computer-assisted instructional lessons on transition metal chemistry

Gammon, Steven Drew

This item is only available for download by members of the University of Illinois community. Students, faculty, and staff at the U of I may log in with your NetID and password to view the item. If you are trying to access an Illinois-restricted dissertation or thesis, you can request a copy through your library's Inter-Library Loan office or purchase a copy directly from ProQuest.

Permalink

https://hdl.handle.net/2142/20930

Description

Title
Redox active metal-sulfide clusters and computer-assisted instructional lessons on transition metal chemistry
Author(s)
Gammon, Steven Drew
Issue Date
1989
Doctoral Committee Chair(s)
Smith, Stanley
Department of Study
Chemistry
Discipline
Chemistry
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
  • Chemistry, Inorganic
  • Education, Teacher Training
  • Education, Technology of
Language
eng
Abstract
  • The chemical education research was focused on the design and implementation of a series of interactive videodisc chemistry lessons. These lessons were designed to give first year chemistry students an appreciation of some of the structural and electronic issues of coordination chemistry. This software uses IBM personal computers, Pioneer and Sony videodisc players, both touch and non-touch screens, and a local area network. The programming was done in Microsoft QuickBASIC. The videodisc was used in these lessons as a means for the students to observe real reactions of some transition metal complexes. The videodisc was also used to present a unique teaching approach to complementary colors and d orbital splitting of octahedral complexes.
  • The synthetic inorganic chemistry research involved the synthesis and characterization of a series of charge transfer salts using metal sulfide clusters and TCNQ. The goal of the research was to design a group of salts to be the organometallic analogs of (TTF)(TCNQ) and demonstrate metallic conductivity.
  • The metal sulfide clusters were cubanes of the formula (RCp)$\sb4$M$\sb2$M$\sp\prime\sb2$S$\sb4$ (R = H, Cp; M = Cr, V; M$\sp\prime$ = Cr,V) and the cluster (RCp)$\sb5$V$\sb5$S$\sb6$ (R = H, Cp). All of the above clusters were examined by cyclic voltammetry and were found to have a 0/+1 oxidation wave at about 0 mV (Ag/AgCl). This oxidation made them suitable for reaction with TCNQ. Upon reaction with TCNQ, we found that these clusters formed both 1:1 (cluster:TCNQ) and 1:2 charge transfer salts with TCNQ. These compounds were semiconductors with band gaps in the range of 0.24-0.75 eV. IR and structural studies of both the 1:1 and 1:2 indicated that the TCNQ had undergone a Peierls distortion and was dimerized.
Type of Resource
text
Permalink
http://hdl.handle.net/2142/20930
Copyright and License Information
Copyright 1989 Gammon, Steven Drew

Owning Collections

Graduate Dissertations and Theses at Illinois PRIMARY
Graduate Theses and Dissertations at Illinois
Dissertations and Theses - Chemistry