Ⅰ. INTRODUCTIONEsters of dithiophosphoric acid are a kind of excellent extractant for separating Co-Ni and Co-Mn. It was found that Co（Ⅱ） is easy to oxidize and to form the stable six-coordinated octahedral comple...Ⅰ. INTRODUCTIONEsters of dithiophosphoric acid are a kind of excellent extractant for separating Co-Ni and Co-Mn. It was found that Co（Ⅱ） is easy to oxidize and to form the stable six-coordinated octahedral complex Co[（RO）<sub>2</sub>PS<sub>2</sub>] during extraction process. And it made back-extraction process very difficult. It was found that pydridine is able to cause substitute-reduction reaction with Co[（RO）<sub>2</sub> PS<sub>2</sub>]<sub>3</sub> and to form Co[（RO）<sub>2</sub>PS<sub>2</sub>]<sub>2</sub>·2Py. It is展开更多
The Mo（Ⅲ） ion has a 4d3 electronic configuration, a nd the expected octahedral 6 coordination has been confirmed by some X-ray structural studies such as K3Mo （NCS）6. H2O·CH3COOH, MoCl3（py）3 and MoCl3（tu...The Mo（Ⅲ） ion has a 4d3 electronic configuration, a nd the expected octahedral 6 coordination has been confirmed by some X-ray structural studies such as K3Mo （NCS）6. H2O·CH3COOH, MoCl3（py）3 and MoCl3（tu）3, but results of structural research work are still not many. It seems to be worthy to take a further investigation of Mo （Ⅲ） complexes. et al. and Kumorita et al. had reported the preparation and some properties for MoCl3（urea）3. In order to obtain its further information about the struc-展开更多
It is well known that the thiocyanate ion (NCS^-) is an ambidentate ligand, and it can coordinate to metal atom either through its nitrogen end or its sulfur end. In view of the hard and soft acids and bases theory, t...It is well known that the thiocyanate ion (NCS^-) is an ambidentate ligand, and it can coordinate to metal atom either through its nitrogen end or its sulfur end. In view of the hard and soft acids and bases theory, the nitrogen atom is 'harder' than the sulfur atom and tends to bond to a 'hard' metal ion. The tendency of a metal atom to coordinate to a certain terminal atom of thiocyanate seems to be a good criterion for determining its relative hardness. The present work is a further investigation about the structure of molybdenum (Ⅲ) thiocyanate complexes.展开更多
基金Project supported by the National Natural Science Foundation of China
文摘Ⅰ. INTRODUCTIONEsters of dithiophosphoric acid are a kind of excellent extractant for separating Co-Ni and Co-Mn. It was found that Co（Ⅱ） is easy to oxidize and to form the stable six-coordinated octahedral complex Co[（RO）<sub>2</sub>PS<sub>2</sub>] during extraction process. And it made back-extraction process very difficult. It was found that pydridine is able to cause substitute-reduction reaction with Co[（RO）<sub>2</sub> PS<sub>2</sub>]<sub>3</sub> and to form Co[（RO）<sub>2</sub>PS<sub>2</sub>]<sub>2</sub>·2Py. It is
文摘The Mo（Ⅲ） ion has a 4d3 electronic configuration, a nd the expected octahedral 6 coordination has been confirmed by some X-ray structural studies such as K3Mo （NCS）6. H2O·CH3COOH, MoCl3（py）3 and MoCl3（tu）3, but results of structural research work are still not many. It seems to be worthy to take a further investigation of Mo （Ⅲ） complexes. et al. and Kumorita et al. had reported the preparation and some properties for MoCl3（urea）3. In order to obtain its further information about the struc-
文摘It is well known that the thiocyanate ion (NCS^-) is an ambidentate ligand, and it can coordinate to metal atom either through its nitrogen end or its sulfur end. In view of the hard and soft acids and bases theory, the nitrogen atom is 'harder' than the sulfur atom and tends to bond to a 'hard' metal ion. The tendency of a metal atom to coordinate to a certain terminal atom of thiocyanate seems to be a good criterion for determining its relative hardness. The present work is a further investigation about the structure of molybdenum (Ⅲ) thiocyanate complexes.
