575433-87-3Relevant academic research and scientific papers
Synthesis and Coordination Chemistry of Hexadentate Picolinic Acid Based Bispidine Ligands
Comba, Peter,Grimm, Laura,Orvig, Chris,Rück, Katharina,Wadepohl, Hubert
, p. 12531 - 12543 (2016/12/26)
The synthesis and CuII, NiII, ZnII, CoII, and GaIII coordination chemistry of the two isomeric hexadentate N5O ligands 6-[[9-hydroxy-1,5-bis(methoxycarbonyl)-7-methyl-6,8-bis(pyridin-2-yl)-3,7-diazabicyclo[3.3.1]nonan-3-yl]methyl]picolinic acid (Hbispa1a) and 6-[[9-hydroxy-1,5-bis(methoxycarbonyl)-7-methyl-2,4-bis(pyridin-2-yl)-3,7-diazabicyclo[3.3.1]nonan-3-yl]methyl]picolinic acid (Hbispa1b), picolinic acid-appended bispidines, are described. The two ligands are highly preorganized for octahedral coordination geometries and are particularly well suited for tetragonal symmetries, i.e., for Jahn-Teller labile ground states. This is confirmed by all data presented: solid-state structures, solution spectroscopy, electrochemistry, and CuII complex stabilities. Differences in the preorganization of the two isomers for the Jahn-Teller labile CuII centers are thoroughly analyzed on the basis of the crystal structures and an angular-overlap-model-based ligand-field analysis.
Modular syntheses of H4octapa and H2dedpa, and yttrium coordination chemistry relevant to 86Y/90Y radiopharmaceuticals
Price, Eric W.,Cawthray, Jacqueline F.,Adam, Michael J.,Orvig, Chris
, p. 7176 - 7190 (2014/05/06)
The ligands H2dedpa, H4octapa, p-SCN-Bn-H 2dedpa, and p-SCN-Bn-H4octapa were synthesized using a new protection chemistry approach, with labile tert-butyl esters replacing the previously used methyl esters as pr
BIFUNCTIONAL CHELATING AGENTS
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Page/Page column 64, (2011/09/19)
A bifunctional chelating agent of the formula (I): wherein the variables R1, R1 , Q1, Q2 and M are as defined in the description of the present application. Also described is a complex of the above chelating age
