Supramolecular structures based on dimetal units: simultaneous utilization of equatorial and axial connections

Abstract
As determined by X-ray crystallography, tetranuclear metal–metal bound molecular loops [Rh2(DAniF)2]2- (O2CCH2CO2)2 (DAniF = N,N′-di-p-anisylformamidinate) react with 2-N donor linkers to give a tubular structure {[Rh2(DAniF)2]2(O2CCH 2CO2)2(NC5H4CHCHC 5H4N)2}n 1, and a sheet-like structure with interstitial dichloromethane molecules for [Rh2(DAniF)2]2(O2CCH2 - CO2)2(NCC6H4CN) 2}n 2; when the assembly unit was changed from [Rh2(DAniF)2(O2CCH2CO2 )]2 to the square [Rh2(DAniF)2(O2CCO2)]4 and the linker NCC6F4C6F4CN was used, the compound {[Rh2(DAniF)2]4(O2C CO2)4(NCC6F4C6 F4CN)4}n 3, was formed, in which there are infinite tubes of square cross section having entrained CH2Cl2 molecules.

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