Goni, A. Md. published the artcileCoordination nature of europium(III) with tBuPNP (2,6-bis(di-tert-butylphosphinomethyl) pyridine) ligand, COA of Formula: C23H43NP2, the publication is Inorganica Chimica Acta (2013), 645-648, database is CAplus.
The reaction of 2,6-bis(di-tert-butylphosphinomethyl)pyridine (PNP) with hydrated Eu(III) chloride yields a novel complex, dichlorotriaqua[2,6-bis(di-tert-butylphosphorylmethyl)pyridine]europium(III) chloride. The complex crystallizes as a dihydrate. IR, 1H and 31P NMR spectroscopic studies were undertaken along with x-ray diffraction studies for structural elucidation. The solid state structure of the compound reveals the insertion of O atoms in the inner coordination sphere bridging P and Eu atoms. The metal center is a seven coordinate system ligated by two chloride ligands, three H2O ligands and two O atoms from the oxidized phosphine moiety of the PNP ligand. The N atom of the pyridine unit of the ligand is not coordinated to the metal center.
Inorganica Chimica Acta published new progress about 338800-13-8. 338800-13-8 belongs to pyridine-derivatives, auxiliary class Bis-phosphine Ligands, name is 2,6-Bis((di-tert-butylphosphino)methyl)pyridine, and the molecular formula is C23H43NP2, COA of Formula: C23H43NP2.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem