Distribution of complex ions between aqeuous and organic layers

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Moogie
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Hi

I was wondering if anyone might be able to offer an explanation why the Fe3+ complex ion containing 5 water ligands and 1 thiocynanate (the classic blood red complex) appears to be able to distribute equally between an organic and an aqueous layer but a cobalt 2+ complex ion containing 4 thiocynanate ions resides exclusively in the aqueous layer

Thanks
 
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Moogie said:
Hi

I was wondering if anyone might be able to offer an explanation why the Fe3+ complex ion containing 5 water ligands and 1 thiocynanate (the classic blood red complex) appears to be able to distribute equally between an organic and an aqueous layer but a cobalt 2+ complex ion containing 4 thiocynanate ions resides exclusively in the aqueous layer

Thanks

Depends on the organic layer.