Lutz, Martin published the artcileA reversible solid-solid phase transition Z’=1 to Z’=6 in [Ni(OAc)(PNPtBu)]OTf, COA of Formula: C23H43NP2, the publication is Polyhedron (2009), 28(12), 2341-2346, database is CAplus.
At ambient temperature, [Ni(OAc)(PNPtBu)]OTf has one independent mol. in the asym. unit of the crystal structure with very large anisotropic displacement parameters. During cooling a fully reversible solid-solid phase transition occurs at a discrete temperature in the range 210-230 K The low-temperature phase has six independent, well ordered mols. in the asym. unit. The P21/a space group symmetry of the high-temperature phase changes to P21/n for the low-temperature phase and the c-axis increases by a factor of six. The acetate ligand is coordinated in a η 1-fashion through one of the O atoms, with the sterically encumbered, tridentate PNPtBu ligand completing the square planar geometry around the NiII ion. The synthesis and full characterization of the complex is reported. Crystallog. data are given.
Polyhedron 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