Spectrophotometric Investigation of Cobaltous Nitrate in Organic Solvents1

1950 ◽  
Vol 72 (12) ◽  
pp. 5455-5463 ◽  
Author(s):  
Leonard I. Katzin ◽  
Elizabeth Gebert
Keyword(s):  
Spectrophotometric Investigation ◽  
Cobaltous Nitrate

Spectrophotometric investigation of the galaxy NGC 3353

Astrophysics ◽  
1986 ◽  
Vol 24 (2) ◽  
pp. 204-213
Author(s):  
A. N. Burenkov ◽  
�. E. Khachikyan
Keyword(s):  
Spectrophotometric Investigation ◽  
The Galaxy

Spectrophotometric investigation of ascorbinate complexes of metals

Talanta ◽  
1967 ◽  
Vol 14 (11) ◽  
pp. 1237-1244 ◽  
Author(s):  
K.P. Stolyarov ◽  
I.A. Amantova
Keyword(s):  
Spectrophotometric Investigation

Spectrophotometric investigation of coloured polycaprolactams

1963 ◽  
Vol 4 (5) ◽  
pp. 1093-1097
Author(s):  
A.N. Bykov ◽  
T.M. Kirillova ◽  
N.P. Lits
Keyword(s):  
Spectrophotometric Investigation

Some reactions of nitrogen bases with cobalt(II) complexes of the bidentate chelate Di(2-pyridyl) sulphide

1970 ◽  
Vol 23 (6) ◽  
pp. 1191 ◽  
Author(s):  
ME Bridson ◽  
WR Walker
Keyword(s):  
Room Temperature ◽  
Equilibrium Constants ◽  
Spectrophotometric Investigation ◽  
Nitrogen Bases ◽  
Bidentate Chelate ◽  
Temperature Equilibrium

Cobalt(11) compounds containing the chelate di(2-pyridyl) sulphide (dps) of the types Co(dps)X2 (X = Cl, Br, and I) and Co(dps)2X2 (X = Cl, Br, and NCS) have been prepared and investigated. An attempt to prepare cobalt(11) complexes containing mixed chelates such as Co(dps)(4-mepy)2X2 (4-mepy = 4-methylpyridine) was unsuccessful. However, a spectrophotometric investigation of the following replacement reactions Co(dps)Cl2 + 2(N-base) ↔ Co (N-base)2Cl2 + dps was carried out in chloroform and room-temperature equilibrium constants were determined. For N-base = 4-mepy, pyridine, 4-ethylpyridine, isoquinoline, 4-benzoylpyridine, quinoline, and 4-cyanopyridine K values were evaluated as 113, 73, 56, 43, 10, 0.7, and 0.03 respectively. For the tetrahedral-octahedral configurational equilibrium Co(4-mepy)2X2 + 2(4-mepy) ↔ Co(4-mepy)4X2(X = Cl, Br, and I) equilibrium constants have been determined at room temperature in chloroform as 13.2, 12.9, and 8.7 respectively.

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