The reaction of 9,10-bis(2-(diphenylphosphino)ethyl)anthracene with [Rh(CO)2Cl]2 in dichloromethane at −30 °C by metal-directed self-assembly affords the novel calix-shaped metallocyclophane [Rh{9,10-bis(2-(diphenylphosphino)ethyl)anthracene}(CO)Cl]3, which adopts a cone conformation and possesses a huge cavity. It has special solution behavior and can encapsulate carbon monoxide in a dichoromethane solution, which leads to fluorescent enhancement emission intensity.

The novel calix-shaped metallocyclophane [Rh9,10-bis(2-(diphenylphosphino)ethyl)anthracene(CO)Cl]3 can encapsulate carbon monoxide in a dichoromethane solution

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The calix-shaped metallocyclophane [Rh{9,10-bis(2-(diphenylphosphino)ethyl)anthracene}-(CO)Cl]3 and its solution behavior

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