https://www.selleckchem.com/pr....oducts/as1842856.htm
A series of bifunctional cyclopentadienes of the type 1,3-EtOCO-HCp-linker-NH2 were synthesized. In this series, the linker length (distance between the amine functionalities and the cyclopentadiene) has been systematically varied (CH2) n (n = 1-3). The corresponding Re complexes [(η5-C5H3RR'Re(CO)3] (R = -COOEt, R' = -linker-NH2) were synthesized and structurally characterized. They exhibit extraordinary stability toward water and air. All bifunctional cyclopentadienes have been labeled with the [99mTc(CO)3]+ moiety. Whereas the rea