Mandel, Jeffrey B. published the artcileSynthesis and spectroscopic characterization of cobalt(III) and copper(II) complexes of hexadentate and tetradentate ligands containing pyridyl arms, Safety of Propane-1,3-diamine dihydrochloride, the publication is Inorganic Chemistry (1988), 27(17), 2990-6, database is CAplus.
[Co(edampda)]ClO4 [H2edampda = N,N‘-bis(2-pyridylmethyl)ethylenediamine-N,N‘-diacetic acid], [Co(tpa)(H2O)Cl](ClO4)2 [tpa = tris(2-pyridylmethyl)amine], [Co(uns-penp)(H2O)Cl](ClO4)2 [uns-penp = N,N-bis(2-pyridylmethyl)ethylenediamine], and [Cu(uns-Hpenp)Cl2]ClO4 were prepared and characterized. In addition, the previously reported [Co(tpen)](ClO4)3 [tpen = N,N,N‘,N‘-tetrakis(2-pyridylmethyl)ethylenediamine], [Co(tptn)](ClO4)3 [tptn = N,N,N‘,N‘-tetrakis(2-pyridylmethyl)-1,3-propanediamine], and ¦¤¦«¦¤-(-)589-[Co(tppn)](ClO4)3 [tppn = N,N,N‘,N‘-tetrakis(2-pyridylmethyl)-1,2-propanediamine] were prepared and characterized by high-resolution 1H NMR spectroscopy for the 1st time. Two-dimensional 1H NMR spectroscopy was utilized to complete the pyridine H assignments in the 1-dimensional 1H NMR spectra of the tpen and tptn complexes. The 300-MHz 1H NMR spectra of all of these complexes show good resolution for all of the hydrogens. The AB patterns of the pyridyl hydrogens and ethylenediamine hydrogens are discussed and correlated to 1 another. The AB coupling constants of the pyridyl rings are ?16 and 20 Hz for the G (in the plane of the ethylenediamine ring) and R (out of the plane of the ethylenediamine ring) chelate rings, resp.; these results are consistent with the well-documented AB coupling constants of (amino polycarboxylato)cobalt complexes. All of the 1H NMR spectra were interpreted completely, and the usefulness of using AB coupling constants to assign individual AB patterns to R, G, or E chelate rings in polypyridyl complexes is demonstrated. In addition, the partial resolution of [Co(tpen)](ClO4)3 is reported, and the visible spectra of all of the complexes are reported.
Inorganic Chemistry published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C3H12Cl2N2, Safety of Propane-1,3-diamine dihydrochloride.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia