Abstract
trans-[1,8-Bis(diisopropylphosphino)triptycene]nickel (II) dichloride, trans-[1,8-bis(diisopropylphosphino)triptycene]carbonylrhodium (I) chloride and cis-[1,8-bis(diisopropyl-phosphino)triptycene] platinum (II) dichloride have been prepared and fully characterized in order to evaluate the coordination diversity of triptycene-based bidentate ligands. Their structural features and coordination preferences were studied and compared to the previously reported palladium complexes. The comparative structural analysis revealed that 1,8-bis(diisopropylphosphino)triptycene is able to access a variety of bite angles and to stabilize metal centers in different geometries. In addition, intramolecular weak C-H⋯Cl-Pt hydrogen bonding interactions which stabilize [1,8-bis(diisopropyl-phosphino)triptycene] platinum (II) dichloride in a constrained cis form are discussed.
Original language | English |
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Pages (from-to) | 761-767 |
Number of pages | 7 |
Journal | Journal of Organometallic Chemistry |
Volume | 692 |
Issue number | 4 |
DOIs | |
State | Published - 15 Jan 2007 |
Bibliographical note
Funding Information:This research was supported by The Israel Science Foundation (Grant No. 866/06). We also thank Dr. Shmuel Cohen for solving X-ray structures.
Keywords
- Bidentate ligands
- Intramolecular hydrogen bond
- Transition metal complexes
- Triptycene
- trans-Spanning