The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: (S)-Propane-1,2-diamine dihydrochloride(SMILESS: C[C@H](N)CN.[H]Cl.[H]Cl,cas:19777-66-3) is researched.COA of Formula: C38H34N2O4P2. The article 《Metal Complexes with Cis α Topology from Stereoselective Quadridentate Ligands with Amine, Pyridine, and Quinoline Donor Groups》 in relation to this compound, is published in Inorganic Chemistry. Let’s take a look at the latest research on this compound (cas:19777-66-3).
Though the principles governing quadridentate topol. and metal stereochem. were known for some time, the cis α topol. was little exploited in designing catalysts for asym. reactions. Study of the inorganic chem. of labile metal cis α complexes was undertaken as a prelude to exploring their potential to serve as catalysts for a variety of different reactions. The synthesis of 1st row transition metal complexes of quadridentate ligands with ethylenediamine (en) and S-propylenediamine (S-pn) backbones that were alkylated at N with either pyridine (py) or quinoline (qn) donor groups as well as with noncoordinating benzyl (Bn) or pentafluorobenzyl (F5Bn) groups was undertaken. The steric and electronic properties vary throughout the ligand series, en(Bn)py, 1, en(F5Bn)py, 2, S-pn(F5Bn)py, 3, and S-pn(F5Bn)qn, 4. These ligands were reacted with MCln salts (n = 2, M = Mn, Fe, Co, Ni, Cu, Zn; n = 3, M = Fe) to generate, in most cases, octahedral complexes with the targeted cis α topol. UV/visible, NMR, IR, cyclic voltammetry (CV), and conductivity anal. are described for the metal compounds x-ray structural anal. of [Cu{en(F5Bn)py}Cl]Cl reveals a five coordinate square pyramidal geometry. Single or major diastereomers were obtained for all diamagnetic Zn(II) complexes as well as for Co(III) analogs that were prepared by oxidation of Co(II) species using Br2 as the oxidant. Electronic differences among ligands are reflected in the oxidation potentials of the resp. metal complexes as determined by CV, with fluorinated systems showing greater resistance to oxidation, as expected.
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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider