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A Porphyrin as a Binucleating Ligand: Preparation and Crystal Structure of a Porphyrin Complex Containing a Coordinated B2O2 Ring |
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| Authors: | Warwick J. Belcher Matthis Breede Penelope J. Brothers Clifton E. F. Rickard |
| Abstract: | A new coordination mode for the porphyrin ligand is found in [B2O2(BCl3)2(tpClpp)] (tpClpp=dianion of 5,10,15,20-tetra-p-chlorophenylporphyrin; the p-chlorophenyl groups are omitted for clarity in the picture shown on the right). This complex contains a four-membered B2O2 ring in the cavity of the ligand. The two boron atoms are coplanar with the porphyrin molecule, which undergoes an elongation along the B⋅⋅⋅B axis to accomodate the unusual guest. |
| Keywords: | Boron N ligands Porphyrinoids |