title: Synthesis of new poly(propylenimine) dendrimers DAB-dendr-[NH(O)COCH2CH2OC(O)C5H4Rh(NBD)](n) [n=4, 8, 16, 32, 64] functionalized with alkoxycarbonylcyclopentadienyl complexes of rhodium(I).
abstract: The reaction between [Rh[C5H4CO2(CH)2OH](NBD)] (1) and 1,1'-carbonyldiimidazole (CDI) leads to the new CO2-imidazole functionalized alkoxycarbonylcyclopentadienyl complex [Rh[C5H4CO2(CH2)2O2C-Im](NBD)] (2) (Im=imidazole). The latter was treated with five generations of poly(propylenimine) dendrimers DAB-dendr-(NH2)(n) [n=4, 8, 16, 32, 64] (DAB=diaminobutane) to accomplish the synthesis of the new organometallic dendritic macromolecules DAB-dendr-[NH(O)COCH2CH2OC(O)C5H4Rh(NBD)](n) [n=4 (4), 8 (5), 16 (6), 32 (7), 64 (8)] based on flexible poly(propylenimine) dendrimer cores, built up to the fifth generation. Spectroscopic characterization of all the new compounds will be presented and discussed.
authors.affiliation: Dipartimento di Chimica Fisica ed Inorganica, Viale Risorgimento 4, I-40136 Bologna, Italy. busetto@ms.fci.unibo.it.
authors.forename: Luigi
authors.initials: L
authors.lastname: Busetto
authors.forename: M Cristina
authors.initials: MC
authors.lastname: Cassani
authors.forename: Piet W N M
authors.initials: PW
authors.lastname: van Leeuwen
authors.forename: Rita
authors.initials: R
authors.lastname: Mazzoni