Some Oxime and Amide Complexes of NiCl2

M. E. Stone; K. E. Johnson

doi:10.1139/v73-190

Some Oxime and Amide Complexes of NiCl2

Canadian Journal of Chemistry ◽

10.1139/v73-190 ◽

1973 ◽

Vol 51 (8) ◽

pp. 1260-1264 ◽

Cited By ~ 20

Author(s):

M. E. Stone ◽

K. E. Johnson

Keyword(s):

Electronic Spectra ◽

Tetragonal Distortion ◽

Cyclohexanone Oxime

[Ni(Aox)4Cl2] (Aox = acetaldoxime), [Ni(Acm)4(H2O)2]Cl2 (Acm = acetamide), Ni(Cy)3Cl2 (Cy = cyclohexanone oxime), and [Ni(cap)6]Cl2(Cap = caprolactam) have been prepared. Their solution electronic spectra indicate approximately octahedral environments for Ni(II) while solid Ni(Aox)4Cl2 shows a small tetragonal distortion. The i.r. spectra can be accounted for by oxime bonding to Ni via nitrogen and amide bonding to Ni via oxygen alone.

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Far-infrared and electronic spectra of some bis(ethylenediamine) and related complexes of copper(II) and the relevance of these data to tetragonal distortion and bond strengths

Inorganic Chemistry ◽

10.1021/ic50098a031 ◽

1971 ◽

Vol 10 (4) ◽

pp. 817-826 ◽

Cited By ~ 160

Author(s):

Alfred B. P. Lever ◽

Elvio Mantovani

Keyword(s):

Electronic Spectra ◽

Far Infrared ◽

Tetragonal Distortion ◽

Bond Strengths

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The effect of temperature on the electronic spectra of octahedral iron(II) complexes

Australian Journal of Chemistry ◽

10.1071/ch9682859 ◽

1968 ◽

Vol 21 (12) ◽

pp. 2859 ◽

Cited By ~ 17

Author(s):

G Winter

Keyword(s):

Electronic Spectra ◽

Tetragonal Distortion ◽

Effect Of Temperature ◽

Temperature Changes ◽

Spectral Changes ◽

Band Separation

Spectral changes in iron(11) complexes caused by temperature changes have been examined. When the iron(11) ion is surrounded by six equivalent ligands (FeC12, FeBr2, FeI2, FeSiF6,6H2O) the band separation that arises from the splitting of the 5Eg level decreases on cooling. The variation is proportional to the magnitude of the band separation. In complexes with tetragonal distortion (FeCl2,2H20, FeCl2,- 2CH3OH,FeCl2,4pyridine, FeCl2,2pyridine, FeCl2,4isoquinoline, FeBr2,4isoquinoline) the variation in band separation with change in temperature is smaller and is inversely related to the magnitude of the band separation.

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Copper(II) Dihydroxybenzoates; Synthesis and Properties

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19931363 ◽

1993 ◽

Vol 58 (6) ◽

pp. 1363-1370 ◽

Cited By ~ 5

Author(s):

Jozef Sokolík ◽

Brigita Lučanská ◽

Gustáv Plesch ◽

Ingrid Tumová ◽

Aladár Valent ◽

...

Keyword(s):

Carboxylic Acids ◽

Electronic Spectra ◽

Room Temperature ◽

Magnetic Moments ◽

Tetragonal Distortion ◽

High Toxicity ◽

Antipyretic Activity ◽

Pharmacological Screening ◽

Cooperative Ordering

Compounds of composition Cu(2,5-DHB)2 . 4 H2O (DHB, dihydroxybenoate anion) and Cu(2,Y-DHB)2 . 8 H2O (Y = 4 or 6) were prepared as potential antiinflamatory gents with a view of pharmacological screening. The room-temperature magnetic moments allow to classify all compounds into the group of magnetically diluted copper(II) complexes. According the EPR and electronic spectra, the degree of tetragonal distortion increases passing from Cu(2,6-DHB)2 . 8 H2O (III) through Cu(2,4-DHB)2 . 8 H2O (I) to Cu(2,5-DHB)2 . 4 H2O (II. The complexes differ also in the cooperative ordering in their structures. All tested compounds exhibit higher antiinflamatory activities (on dextran edema) than free carboxylic acids. However, their effects were accompanied with relatively high toxicity. Remarkable results were also achieved on evaluating the antipyretic activity.

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