X-ray structural examination of organic ligands of the complexone type. VIII. Crystal and molecular structure of nitrilotripropionic acid

1985 ◽  
Vol 26 (3) ◽  
pp. 447-451 ◽  
Author(s):  
A. V. Gasparyan ◽  
L. M. Shkol'nikova ◽  
N. V. Tsirul'nikova ◽  
N. A. Egorushkina ◽  
L. G. Makarevich ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Organic Ligands ◽  
Structural Examination ◽  
X Ray ◽  
Type Viii ◽  
Nitrilotripropionic Acid

X-ray structural study of organic ligands of the Complexone type. XVII. Crystal and molecular structure of nitrilo-di(?-propionamide)monoacetic acid

1988 ◽  
Vol 29 (1) ◽  
pp. 99-104
Author(s):  
L. M. Shkol'nikova ◽  
K. D. Suyarov ◽  
A. L. Poznyak ◽  
N. M. Dyatlova ◽  
S. S. Makarevich
Keyword(s):  
Molecular Structure ◽  
Structural Study ◽  
Crystal And Molecular Structure ◽  
Organic Ligands ◽  
X Ray

An X-ray structural study of organic ligands of the complexone type. IV. Crystal and molecular structure of rac-2,3-dihydroxybutane-1,4-diamine-N,N,N?,N?-tetra-acetic acid

1983 ◽  
Vol 24 (3) ◽  
pp. 400-407
Author(s):  
A. E. Obodovskaya ◽  
L. M. Shkol'nikova ◽  
L. O. Atovmyan ◽  
I. A. Seliverstova ◽  
V. G. Yashunskii ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Acetic Acid ◽  
Structural Study ◽  
Crystal And Molecular Structure ◽  
Organic Ligands ◽  
X Ray ◽  
Type Iv

X-ray structural study of organic ligands of the complexone type. III. Crystal and molecular structure of phosphonomethylglycine and iminodiacetic-monomethylphosphonic acid

1983 ◽  
Vol 23 (5) ◽  
pp. 737-746 ◽  
Author(s):  
L. M. Shkol'nikova ◽  
M. A. Porai-Koshits ◽  
N. M. Dyatlova ◽  
G. F. Yaroshenko ◽  
M. V. Rudomino ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Structural Study ◽  
Crystal And Molecular Structure ◽  
Organic Ligands ◽  
X Ray ◽  
Type Iii

The crystal and molecular structure of tris(pentamethylenedithiocarbamate) chromium(III)-chloroform (1 : 2)

1981 ◽  
Vol 46 (1) ◽  
pp. 6-19 ◽  
Author(s):  
Viktor Kettman ◽  
Ján Garaj ◽  
Jaroslav Majer
Keyword(s):  
Molecular Structure ◽  
Structural Analysis ◽  
Crystal And Molecular Structure ◽  
Analysis Method ◽  
Complex Molecules ◽  
Coordination Polyhedra ◽  
X Ray ◽  
Cell Dimensions ◽  
Crustal Density ◽  
Unit Cell Dimensions

The crystal and molecular structure of [Cr(S2CN(CH2)5)3].2 CHCl3 was found by the X-ray structural analysis method. The value R 0.090 was found for 1 131 observed independent reflections. The substance crystallizes in a space group of symmetry P212121 with the following unit cell dimensions: a = 0.8675 (6), b = 1.815(2), c = 2.155(3) nm. The experimentally observed crustal density was 1.48 Mgm-3 and the value calculated for Z = 4 was 1.51 Mgm-3. The CrS6 coordination polyhedron has the shape of a trigonally distorted octahedron, where the D3 symmetry is a approximately retained. The degree of trigonal distortion expressed as the projection of the chelate S-Cr-S angle onto the plane perpendicular to the C3 pseudo axis is Φ = 41.7° (Φ = 60° for an octahedron). The skeleton of the structure formed by the complex molecules contains channels filled with chloroform molecules. The specific type of complex-chloroform interaction consists of the formation of hydrogen bonds of the chloroform protons with the fully occupied pπ-orbitals of the sulphur atoms in the coordination polyhedra. The low stability and crystal decomposition can be explained by loss of chloroform from the channels.

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.

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