The reaction of the new ligand 1,3-di(2-(N-isopropylamino)troponimine)propane, H-2[(iPr)TP], with KH affords K-2[(iPr)TP]. The salt of this new ligand is a useful starting material for the preparation of the lanthanum compounds [[(iPr)TP](3)La-2(THF)](2) and [[(iPr)TP]LaCl(THF)](2), respectively. These metal complexes were characterized by NMR and X-ray crystallography. In contrast to macrocyclic ligands the [(iPr)TP]2- anion shows a higher flexibility upon coordination and features two different coordination modes. Further reaction of [[(iPr)TP]LaCl(THF)](2) with 2 equiv of LiCH(SiMe3)(2) or KN(SiMe3)(2) in toluene affords the alkyl or amide derivatives [[(iPr)TP](2)LaE(SiMe3)(2)] (E = CH, N) in high yield. Crystal data : [[(iPr)TP](3)La-2(THF)](2), space group P2(1)/c, a = 19.860(2) Angstrom, b = 17.691(3) Angstrom, c = 21.333(3) Angstrom, beta = 102.211(8)degrees, Z = 4, V = 7325.8 Angstrom(3); [[(iPr)TP]LaCl(THF)](2), space group P2(1)/n, a = 12.848(3) Angstrom, b = 32.902(7) Angstrom, c = 16.215(3) Angstrom, beta = 110.38(3)degrees, Z = 4, V = 6425(2) Angstrom(3).