Showing papers by "Sang-Hoon Kim published in 2004"
TL;DR: The preparation of an 1,3-alternate calix[4]arene phosphorus ligand and single-crystal X-ray diffraction study reveal that the rhodium center has a bent coordination environment with a P-Rh-P angle of 135.66(3) degrees.
Abstract: The preparation of an 1,3-alternate calix[4]arene phosphorus ligand, 25,27-bis(2-(diphenylphosphino)ethoxy)-26,28-bis(1-propyloxy)calix[4]arene (3), is presented Ligand 3 is obtained in three steps in 64% overall yield Reaction of 3 with [Rh(cot) 2 ]BF 4 produced the encapsulated rhodium complex [Rh{(P,P)-diphen-calix[4]arene}]BF 4 (4) As revealed by a single-crystal X-ray diffraction study, the rhodium center has a bent coordination environment with a P-Rh-P angle of 13566(3)° Palladation of 3 employing [Pd(MeCN) 4 ](BF 4 ) 2 yielded the chelate palladium complex 7 in which the palladium center has a slightly bent configuration Treatment of the ligand with Pd(cod)Cl 2 and [Pd(η 3 -C 4 H 7 )(THF) 2 ]BF 4 leads to the isolation of the monometallic complex Full characterization includes X-ray structural studies of compounds 3, 4, and 6
17 citations