10.1021/ja205021p.s002 Fabian M. Conrady Fabian M. Conrady Roland Fröhlich Roland Fröhlich Christian Schulte to Brinke Christian Schulte to Brinke Tania Pape Tania Pape F. Ekkehardt Hahn F. Ekkehardt Hahn Stepwise Formation of a Molecular Square with Bridging NH,O-Substituted Dicarbene Building Blocks American Chemical Society 2011 BF NH isocyanide carbon atoms dicarbene linkers Stepwise Formation intramolecular attack Molecular Square hydroxyl groups Cl Ir diisocyanide bridges 2011-08-03 00:00:00 Dataset https://acs.figshare.com/articles/dataset/Stepwise_Formation_of_a_Molecular_Square_with_Bridging_NH_O_Substituted_Dicarbene_Building_Blocks/2626912 The β,β′-bis(triisopropylsiloxy)phenyl-1,4-diisocyanide <b>3</b> and [Ir(Cp*)Cl<sub>2</sub>]<sub>2</sub> were used for the stepwise assembly of the [Ir(Cp*)Cl] cornered molecular square [<b>6</b>](Cl)<sub>4</sub>. Synthesis of the tetrakis(diisocyanide) bridged molecular square [Ir(Cp*)Cl(<b>3</b>)]<sub>4</sub>(BF<sub>4</sub>)<sub>4</sub> [<b>5</b>](BF<sub>4</sub>)<sub>4</sub> followed by cleavage of the O–Si(<i>i</i>-Pr)<sub>3</sub> bonds of the diisocyanide bridges with HCl/<i>i</i>-PrOH led to an intramolecular attack of the liberated hydroxyl groups at the isocyanide carbon atoms with formation of molecular square [<b>6</b>](Cl)<sub>4</sub> featuring four dicarbene linkers.