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Syntheses, Crystallization, and Spectroscopic Characterization of 3,5-Lutidine N-Oxide Dehydrate
Published on: April 24, 2018
4,6-Bis(diphenyl-phosphino)phenoxazine (nixantphos)
Thashree Marimuthu1, Muhammad D Bala, Holger B Friedrich
1School of Chemistry, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, Durban 4000, South Africa.
Acta Crystallographica. Section E, Structure Reports Online
|January 5, 2011
Summary
This study details a novel rhodium ligand, C(36)H(27)NOP(2), crucial for hydroformylation catalysis. Its unique structure features a significant intra-molecular phosphorus-phosphorus distance, influencing catalytic activity.
Area of Science:
- Organometallic Chemistry
- Catalysis
- Coordination Chemistry
Background:
- Rhodium complexes are vital catalysts in hydroformylation.
- Ligand design significantly impacts catalytic efficiency and selectivity.
- The title compound, C(36)H(27)NOP(2), is a novel ligand for rhodium.
Purpose of the Study:
- To characterize the structure of the title compound, C(36)H(27)NOP(2).
- To investigate the structural features relevant to its role as a ligand in rhodium-catalyzed hydroformylation.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular structure.
- Analysis of bond lengths, bond angles, and planarity of the phenoxazine ring system.
Main Results:
- The compound exhibits an intra-molecular P⋯P distance of 4.255(2) Å.
- Bond angles at the phosphorus atoms range from 99.93(10)° to 103.02(10)°.
- The phenoxazine ring system is planar with a non-crystallographic mirror plane.
Conclusions:
- The unique structural characteristics, including the P⋯P distance and planar phenoxazine core, are key features of this ligand.
- These structural attributes likely contribute to its efficacy in rhodium-catalyzed hydroformylation reactions.
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