MAGNETIC STUDIES OF HIGH-SPIN COBALTOUS COMPOUNDS. VII. SOME THIOCYANATE COMPLEXES
The compound STACo(Ph/sub 3/P)/sub 2/(SCN)/sub 2/! was studied magnetically and spectroscopically. The data lead to the following conclusions: (1) the compound is tetrahedral; (2) the SCN groups are bound to Co via the sulfur atoms; (3) the position of S-bonded thiocyanate ions in the spectrochemical series is between Cl/sup -/ and Br/sup -/ as previously shown by Schaffer. Several salts of the STACo(NCS)4!/sup 2-/ anion were studied magnetically and spectroscopically. A number of importart parameters pertaining to the electronic structure and ligand field were evaluated and the effect of bonding the S atom to Hg(II) in moving the -NCS- ion to a stronger position in the spectrochemical series, as observed by Schaffer, was confirmed. The compound STACo(Ph/sub 3/PO)/sub 2/(NCS)/sub 2/! has been prepared. Comparison of spectral and magnetic data for the compound with similar data for its chloride and bromide analogs shows that in this case the thiocyanate ions are coordinated through the nitrogen atoms. (auth)
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge
- NSA Number:
- NSA-15-016873
- OSTI ID:
- 4020102
- Report Number(s):
- NYO-9563
- Country of Publication:
- United States
- Language:
- English
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