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Metal complexes of selected organic ligands containing sulphur and phosphorus

Metal complexes of selected organic ligands containing sulphur and phosphorus

Bloodworth, B. C. (1976) Metal complexes of selected organic ligands containing sulphur and phosphorus. PhD thesis, Thames Polytechnic.

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Abstract

An industrial problem concerning a pesticide product, ®Tinox, lead to the work described in this thesis. This included the study of the chelating properties of six sulphur and oxygen ligands and five phosphoryl sulphur and oxygen ligands with nickel(ll) and coba lt(ll) halides. Thirty two complexes of nickel(II) and cobalt(ll) halides were prepared and are reported in this thesis.

The ligands used in the investigation are
1. 3-thiabutanol
2. 1-mereapto-3-thiabutane
3. 1-mereapto-2-methoxyethane
4. l-methoxy-3-thiabutane
5. Di-(2-inethylthioethyl) disulphide
6. Di-(2-methoxyethyl) disulphide
7. 0,0-dimethyl methyl phosphorodithioate
8. 0 0, 0-dimethyl (2-methylthioethyl) phosphorodithioate
9. 0,0-dimethyl 0-(2-methylthioethyl) phosphorothionate
10. 0,0-dimethyl S-(2-methylthioethyl) phosphorothiolate
11. 0,0-dimethyl (2-methylthioethyl) thiophosphonate

The complexes were investigated by magnetic, spectrophotometric (infrared, ultraviolet) and conductiometric measurements.

The stereochemistry of the complexes prepared depended on the particular ligand used and examples of octahedral tetrahedral and square planar complexes of nickel (ll) halites and tetrahedral and square planar of cobalt halides complexes were obtained.

A comparison between the co-ordinating properties of sulphur and oxygen in their analogout forms i.e. thiol with hydroxyl, thioether with ether and thiophosphate with phosphate was made.

A preliminary study on the use of ferric salt in the stablisation of ®Tinox was conducted. No conclusion could be established at this stage and further experimental work is required for a proper evaluation on the potential use of the ferric salt.

Item Type: Thesis (PhD)
Additional Information: uk.bl.ethos.571364
Uncontrolled Keywords: chemistry, ligand, coordination complex, Tinox
Subjects: Q Science > QD Chemistry
Pre-2014 Departments: School of Chemistry
School of Science > Department of Chemistry
Last Modified: 03 Feb 2017 14:11
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/8982

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