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Accessing Valuable Ligand Supports for Transition Metals: A Modified, Intermediate Scale Preparation of 1,2,3,4,5-Pentamethylcyclopentadiene
Published on: March 20, 2017
Construction of the first rhodium(I) cyclic pentameric structure [Rh(CO)Cl{(μ-N(t)BuP)2(C≡CPh)2}]5 using
Mujahuddin M Siddiqui1, Joel T Mague, Maravanji S Balakrishna
1Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology (IIT) Bombay , Powai, Mumbai 400076, India.
Abstract:
To examine the steric effect of the phosphorus substituents in cyclodiphosphazanes, two less sterically demanding alkynyl-functionalized cis-[(μ-N(t)BuP)2(C≡CPh)2] (1) and trans-[(μ-N(t)BuP)2(C≡CPh)2] (2) were synthesized. The cis isomer 1, with a large subtending angle (135.8°) upon treatment with [Rh(CO)2Cl]2, afforded the first rhodium(I) cyclic pentameric macrocycle [Rh(CO)Cl{(μ-N(t)BuP)2(C≡CPh)2}]5 (3). The crystal structure of the cyclic pentamer 3 closely resembles a classical "Ferris wheel".
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