title: Construction of the first rhodium(I) cyclic pentameric structure [Rh(CO)Cl{(μ-N(t)BuP)2(C≡CPh)2}]5 using (phenylethynyl)cyclodiphosphazanes.
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".
authors: Phosphorus Laboratory, Department of Chemistry, Indian Institute of Technology (IIT) Bombay , Powai, Mumbai 400076, India.
authors: Mujahuddin M
authors: MM
authors: Siddiqui
authors: Joel T
authors: JT
authors: Mague
authors: Maravanji S
authors: MS
authors: Balakrishna