%0 Journal Article %T Heteroleptic carbazolato-barium hydroborates and a related separated ion pair %+ Institut des Sciences Chimiques de Rennes (ISCR) %A Chapple, Peter.M. %A Roisnel, Thierry %A Cordier, Marie %A Carpentier, Jean-François %A Sarazin, Yann %Z P.M.C would like to thank the French Agence Nationale de la Recherche for the provision of a research grant (ANR-17-CE07-0017-01) %< avec comité de lecture %@ 0277-5387 %J Polyhedron %I Elsevier %V 217 %P 115731 %8 2022-05 %D 2022 %R 10.1016/j.poly.2022.115731 %K Carbazolate ligand %K Barium %K Hydroborate %K Cation %Z Chemical SciencesJournal articles %X The syntheses and characterisation of two molecular barium-hydroborate complexes supported by a bulky bis(imino)carbazolate ligand, namely [{CarbDipp}Ba(μ-H2Bpin)]3 (23) and [{CarbDipp}Ba(H2-9BBN).Et2O] (3.Et2O), are presented. These two complexes are obtained in high yields upon reaction of the amido precursor [{CarbDipp}BaN(SiMe3)2] (1) with the commercially available pinacolborane or [H-9BBN]2, respectively. The solid-state molecular structures of the complexes were solved, and show 23 to form a solvent-free cyclic trimer, whereas the monomeric 3.Et2O is solvated by one molecule of diethyl ether. Furthermore, the well-defined ion pair [{CarbDipp}Ba.(Et2O)2]+[H2N{B(C6F5)3}2]– (4), a rare occurrence of soluble barium cation, was also obtained in good yield upon treatment of 1 with Bochmann’s acid. Its X-ray structure was solved and reveals the absence of interaction between the metal cation and its counter-ion. Finally, the structure of the seven-coordinated, dicationic [Ba.(thf)7]2+[H2N{B(C6F5)3}2]–2 (5) is also presented. %G English %2 https://univ-rennes.hal.science/hal-03607938/document %2 https://univ-rennes.hal.science/hal-03607938/file/POLYH-D-22-00021_MS_Revised_R1_ClearVersion.pdf %L hal-03607938 %U https://univ-rennes.hal.science/hal-03607938 %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ ENSC-RENNES %~ ISCR %~ SCR-CD %~ SCR_OMC2012 %~ ISCR-OMC %~ STATS-UR1 %~ UR1-SPM %~ ISCR-PRATS %~ INC-CNRS %~ UR1-UFR-SPM %~ UR1-HAL %~ UR1-SDLM %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ ANR %~ UR1-MMS %~ TEST2-HALCNRS