Studies in chromium complexes
- Authors: Friend, Maurice Temple
- Date: 1953
- Subjects: Complex ions , Chromium
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4474 , http://hdl.handle.net/10962/d1011892 , Complex ions , Chromium
- Description: In this work physical and analytical methods have been used to investigate the potassium salts of certain dioxalato chromium (III) complexes. The solid potassium salts of the trioxalatochromiate and the cis and trans dioxalatodiaquochromiates together with a salt corresponding to potassium dioxalatosulphatoaquochromiate were prepared. The mono- and dihydroxo derivatives of the cis and trans dioxalatochromiates were also obtained in aqueous solution. The methods of preparation and analysis used are described. Spectrophotometric absorption curves obtained on solutions of these salts using a Beckman Spectrophotometer are in agreement with results of previous workers, and the new absorption curve obtained from a solution of the solid cis dioxalatodiaquochromia salt shows that it is pure and gives additional proof of the completeness of the trans - cis isomerisation. Summary, p. i.
- Full Text:
- Date Issued: 1953
- Authors: Friend, Maurice Temple
- Date: 1953
- Subjects: Complex ions , Chromium
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4474 , http://hdl.handle.net/10962/d1011892 , Complex ions , Chromium
- Description: In this work physical and analytical methods have been used to investigate the potassium salts of certain dioxalato chromium (III) complexes. The solid potassium salts of the trioxalatochromiate and the cis and trans dioxalatodiaquochromiates together with a salt corresponding to potassium dioxalatosulphatoaquochromiate were prepared. The mono- and dihydroxo derivatives of the cis and trans dioxalatochromiates were also obtained in aqueous solution. The methods of preparation and analysis used are described. Spectrophotometric absorption curves obtained on solutions of these salts using a Beckman Spectrophotometer are in agreement with results of previous workers, and the new absorption curve obtained from a solution of the solid cis dioxalatodiaquochromia salt shows that it is pure and gives additional proof of the completeness of the trans - cis isomerisation. Summary, p. i.
- Full Text:
- Date Issued: 1953
Studies in chromium complexes
- Authors: Cooper, Desmond Rudolph
- Date: 1953
- Subjects: Chromium , Complex ions
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4523 , http://hdl.handle.net/10962/d1014707
- Description: The chemistry of co-ordination compounds in general has played an important role in the development of the modern theory of valency, but the properties of complex salts between chromium and organic compounds containing carboxyl and amino- groups are of additional interest because of their bearing on the theory of certain technological processes such as chromium plating and, in particular, chrome-tanning. Owing to the rapid development of valence theory over the last two decades the technological chemist finds himself at a disadvantage vis-a-vis his academic counterpart in attempting to interpret the results of researches relating to these compounds as he must rely on the less powerful "classical" approach to his problems. Hence the need was felt for a brief survey of modern concepts of valency in terms of wave mechanics. For a more extended study the reader may consult the appropriate references and text books.
- Full Text:
- Date Issued: 1953
- Authors: Cooper, Desmond Rudolph
- Date: 1953
- Subjects: Chromium , Complex ions
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4523 , http://hdl.handle.net/10962/d1014707
- Description: The chemistry of co-ordination compounds in general has played an important role in the development of the modern theory of valency, but the properties of complex salts between chromium and organic compounds containing carboxyl and amino- groups are of additional interest because of their bearing on the theory of certain technological processes such as chromium plating and, in particular, chrome-tanning. Owing to the rapid development of valence theory over the last two decades the technological chemist finds himself at a disadvantage vis-a-vis his academic counterpart in attempting to interpret the results of researches relating to these compounds as he must rely on the less powerful "classical" approach to his problems. Hence the need was felt for a brief survey of modern concepts of valency in terms of wave mechanics. For a more extended study the reader may consult the appropriate references and text books.
- Full Text:
- Date Issued: 1953
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