Cobalt oleate explained

Cobalt oleate is an organometallic compound with the formula Co(C₁₈H₃₃O₂)₂. When cobalt oleate is added to non-polar solvents, the viscosity rapidly increases, and then continues increasing over time. This unusual viscosity effect is caused by the formation of a weak coordination complex with the solvent molecules.^[1]

Preparation

Cobalt oleate can be synthesized by heating a solution of sodium oleate and cobalt(II) chloride to 70 °C.^[2]

2NaC18H33O2 + CoCl2 -> 2NaCl + Co(C18H33O2)2

See also

• Oleic acid

Notes and References

1. Funakoshi . Hideo . Matuura . Ryohei . October 1964 . Peptizing Action of Some Polar Substances on the Benzene Solution of Cobalt Oleate . Nature . en . 204 . 4954 . 186 . 10.1038/204186a0 . 1964Natur.204..186F . 4198459 . 0028-0836. free .
2. An . Kwangjin . Lee . Nohyun . Park . Jongnam . Kim . Sung Chul . Hwang . Yosun . Park . Je-Geun . Kim . Jae-Young . Park . Jae-Hoon . Han . Myung Joon . Yu . Jaejun . Hyeon . Taeghwan . 2006-08-01 . Synthesis, Characterization, and Self-Assembly of Pencil-Shaped CoO Nanorods . Journal of the American Chemical Society . en . 128 . 30 . 9753–9760 . 10.1021/ja0608702 . 16866531 . 0002-7863. subscription .