Kang, Hyun Ji Noh, Tae Hwan Na, Young Mee Yoo, Kyung Ho Jung, Ok-Sang 2024-01-20T21:33:09Z 2024-01-20T21:33:09Z 2021-09-03 2009-04-20 0020-1693 https://pubs.kist.re.kr/handle/201004/132562 The reaction of (COD)PdCl2 (COD = 1,5-cyclooctadiene) with (3-Py)(2)SiR1R2 (3-Py = 3-pyridyl; R-1 = Ph, R-2 = Ph (m-pdps); R-1 = Ph, R-2 = Me (m-pmps)) in acetone affords single crystals consisting of cyclodimers, [PdCl2((3-Py)(2)SiR1R2)](2), whereas the same reaction in a mixture of dichloromethane and ethanol yields amorphous spheres consisting of cyclotrimers, [PdCl2((3-Py)(2)SiR1R2)](3). In a boiling chloroform solution, the cyclodimers are completely converted to cyclotrimers. These cyclotrimers, in the 10-60 degrees C range, are partly returned to cyclodimers. By contrast, the reaction of (COD) PdCl2 with (3-Py)(2)SiR1R2 (R-1 = Bu, R-2 = Me (m-pbms); R-1 = dodecyl, R-2 = Me (m-pddms)) yields amorphous spheres consisting of cyclotrimers irrespective of solvents. Both [PdCl2(m-pbms)](3) and [PdCl2(m-pddms)](3) are initially cyclotrimers in chloroform, but they exist as a mixture of cyclodimers and cyclotrimers in solution in the 10-60 degrees C range. The metallacycles tend to form cyclodimers in the order m-pdps > m-pmps > m-pbms > m-pddms. The equilibrium between cyclodimers and the cyclotrimers is sensitive to solvent, temperature, and concentration as well as molecular structure. (c) 2008 Published by Elsevier B.V. English ELSEVIER SCIENCE SA PLATINUM(II) ASSEMBLIES MORPHOLOGY CARBON METAL Interconversion between cyclodimer and cyclotrimer: Synthesis and characterization of cyclo-[Pd(II)Cl-2(N-N)] complexes Article 10.1016/j.ica.2008.09.024 1 INORGANICA CHIMICA ACTA, v.362, no.6, pp.1963 - 1968 INORGANICA CHIMICA ACTA 362 6 1963 1968 scie scopus 000265299200043 2-s2.0-64349094001 Chemistry, Inorganic & Nuclear Chemistry Article PLATINUM(II) ASSEMBLIES MORPHOLOGY CARBON METAL Cyclodimers Cyclotrimers Interconversion Microspheres Palladium(II) complexes