%0 Generic %A Conrady, Fabian M. %A Fröhlich, Roland %A Schulte to Brinke, Christian %A Pape, Tania %A Hahn, F. Ekkehardt %D 2011 %T Stepwise Formation of a Molecular Square with Bridging NH,O-Substituted Dicarbene Building Blocks %U https://acs.figshare.com/articles/dataset/Stepwise_Formation_of_a_Molecular_Square_with_Bridging_NH_O_Substituted_Dicarbene_Building_Blocks/2626912 %R 10.1021/ja205021p.s002 %2 https://acs.figshare.com/ndownloader/files/4277610 %K BF %K NH %K isocyanide carbon atoms %K dicarbene linkers %K Stepwise Formation %K intramolecular attack %K Molecular Square %K hydroxyl groups %K Cl %K Ir %K diisocyanide bridges %X The β,β′-bis(triisopropylsiloxy)phenyl-1,4-diisocyanide 3 and [Ir(Cp*)Cl2]2 were used for the stepwise assembly of the [Ir(Cp*)Cl] cornered molecular square [6](Cl)4. Synthesis of the tetrakis(diisocyanide) bridged molecular square [Ir(Cp*)Cl(3)]4(BF4)4 [5](BF4)4 followed by cleavage of the O–Si(i-Pr)3 bonds of the diisocyanide bridges with HCl/i-PrOH led to an intramolecular attack of the liberated hydroxyl groups at the isocyanide carbon atoms with formation of molecular square [6](Cl)4 featuring four dicarbene linkers. %I ACS Publications