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- W1986173763 abstract "Bis(tetracarbonylcobalt)mercury has been found to react with melted imidazole at 130° to give imidazolecobalt(II) bis[tetracarbonylcobaltate(-I)], [Co(N2C3H4)x][Co(CO)4]2, which changes its colour in the imidazole metl reversibly from pink to blue between 70 and 140°. This thermochromism may be explained by a change of the coordination number of the cobalt iron surrounded by imidazole (x=6 resp. 4). At 200° the primary product is converted into diimidazolylcobalt, Co(N2C3H3)2. Die Umsetzung von Bis(tetracarbonylcobalt)quecksilber mit geschmolzenem Imidazol ergibt bei 130° zunächst Imidazolcobalt(II)-bis(tetracarbonylcobaltat)(-I)], [Co(N2C3H4)x][Co(CO)4]2, das zwischen 70 und 140° in der Imidazolschmelze reversibel seine Farbe von rosarot nach blau ändert. Diese Thermochromie kann durch einen Wechsel der Koordinationszahl des Cobalt(II)-Ions erklärt werden (x= 6 bzw. 4). Aus dem Primärprodukt entsteht bei 200° blaues Diimidazolylcobalt, Co(N2C3H3)2." @default.
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- W1986173763 date "1969-03-01" @default.
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- W1986173763 title "Über die umsetzung von bis(tetracarbonylcobalt)quecksilber mit imidazol" @default.
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- W1986173763 doi "https://doi.org/10.1016/s0022-328x(00)89773-9" @default.
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