Asymmetric synthesis of threonine and partial resolution and retroracemization of .alpha.-amino acids via copper(II) complexes of their Schiff bases with (S)-2-N-(N'-benzylprolyl)aminobenzaldehyde and (S)-2-N-(N'-benzylprolyl)aminoacetophenone. Crystal and molecular structure of a copper(II) complex of glycine Schiff base with (S)-2-N-(N'-benzylprolyl)aminoacetophenone

1983 ◽  
Vol 105 (7) ◽  
pp. 2010-2017 ◽  
Author(s):  
Yu. N. Belokon ◽  
I. E. Zel'tser ◽  
V. I. Bakhmutov ◽  
M. B. Saporovskaya ◽  
M. G. Ryzhov ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Amino Acids ◽  
Schiff Base ◽  
Asymmetric Synthesis ◽  
Schiff Bases ◽  
Crystal And Molecular Structure ◽  
Partial Resolution

scholarly journals Structural Characterization of Heterodinuclear ZnII-LnIII Complexes (Ln = Pr, Nd) with a Ring-Contracted H2valdien-Derived Schiff Base Ligand

2021 ◽  
Author(s):  
Shabana Noor ◽  
Richard Goddard ◽  
Fehmeeda Khatoon ◽  
Sarvendra Kumar ◽  
Rüdiger W. Seidel
Keyword(s):  
Molecular Structure ◽  
Schiff Base ◽  
Structural Characterization ◽  
Schiff Base Ligand ◽  
Crystal And Molecular Structure ◽  
X Ray ◽  
X Ray Crystallography ◽  
Imidazoline Ring

AbstractSynthesis and structural characterization of two heterodinuclear ZnII-LnIII complexes with the formula [ZnLn(HL)(µ-OAc)(NO3)2(H2O)x(MeOH)1-x]NO3 · n H2O · n MeOH [Ln = Pr (1), Nd (2)] and the crystal and molecular structure of [ZnNd(HL)(µ-OAc)(NO3)2(H2O)] [ZnNd(HL)(OAc)(NO3)2(H2O)](NO3)2 · n H2O · n MeOH (3) are reported. The asymmetrical compartmental ligand (E)-2-(1-(2-((2-hydroxy-3-methoxybenzylidene)amino)-ethyl)imidazolidin-2-yl)-6-methoxyphenol (H2L) is formed from N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) through intramolecular aminal formation, resulting in a peripheral imidazoline ring. The structures of 1–3 were revealed by X-ray crystallography. The smaller ZnII ion occupies the inner N2O2 compartment of the ligand, whereas the larger and more oxophilic LnIII ions are found in the outer O2O2’ site. Graphic Abstract Synthesis and structural characterization of two heterodinuclear ZnII-LnIII complexes (Ln = Pr, Nd) bearing an asymmetrical compartmental ligand formed in situ from N1,N3-bis(3-methoxysalicylidene)diethylenetriamine (H2valdien) through intramolecular aminal formation are reported.

Cobalt(II) and nickel(II) complexes ofN-protected amino acids. Crystal and molecular structure of bis (N-acetylglycinato)tetraaquocobalt(II)

1987 ◽  
Vol 17 (3) ◽  
pp. 313-321 ◽  
Author(s):  
L. Menabue ◽  
M. Saladini ◽  
L. P. Battaglia ◽  
A. Bonamartini Corradi ◽  
G. Marcotrigiano ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Amino Acids ◽  
Crystal And Molecular Structure
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