%0 Generic %A Burford, Neil %A D'eon, Mark %A Ragogna, Paul J. %A McDonald, Robert %A Ferguson, Michael J. %D 2004 %T Synthesis and Structures of Complexes Demonstrating the Coordinative Versatility of the 2,4-Diimino-3-phosphinopentene Anion (γ-Phosphino-β-diketiminate) %U https://acs.figshare.com/articles/dataset/Synthesis_and_Structures_of_Complexes_Demonstrating_the_Coordinative_Versatility_of_the_2_4_Diimino_3_phosphinopentene_Anion_Phosphino_diketiminate_/3352210 %R 10.1021/ic0351444.s004 %2 https://acs.figshare.com/ndownloader/files/5191522 %K chelate %K 31 P NMR chemical shifts %K coordinative engagement %K ligand backbone %K Coordinative Versatility %K diimino %K anion %K AsCl 3 %K SbCl 3 result %K intramolecular coordination %X The synthesis and characterization of a 2,4-diimino-3-phosphinopentene anion (γ-phosphino-β-diketiminate) is reported and enables diversification of the β-diketiminate ligand framework, which has been widely employed across the periodic table. Phosphines are observed to adopt the γ-position of the ligand rather than the N,N‘ chelate. While aluminum and lithium adopt the familiar N,N‘ chelate arrangement with the new 2,4-diimino-3-phosphinopentene anion ligand, reactions with AsCl3 or SbCl3 result in substitution at the β-methyl position on the ligand backbone, realizing novel P→E (E = As or Sb) intramolecular coordination. The chemistry of the 2,4-diimino-3-phosphinopentene anion can be monitored by the 31P NMR chemical shifts, which are distinctively diagnostic of the coordinative engagement of the ligand. %I ACS Publications