Synthesis, single crystal structures, DFT and in vitro anti oxidant superoxide dismutase studies of copper(II) complexes derived from the di-(2-picolyl)amine and co-ligands: Promising antioxidants

Polyhedron ◽  
2021 ◽  
pp. 115609
Author(s):  
Satish K. Patel ◽  
Ram N. Patel ◽  
Abhay K. Patel ◽  
Neetu Patel ◽  
M. Cortijo ◽  
...  
Keyword(s):  
Superoxide Dismutase ◽  
Single Crystal ◽  
Crystal Structures ◽  
Single Crystal Structures ◽  
Anti Oxidant

Syntheses, single crystal structures, DFT and antioxidant superoxide dismutase studies of some new mono-/binuclear copper(II) complexes

Polyhedron ◽  
2017 ◽  
Vol 129 ◽  
pp. 164-181 ◽  
Author(s):  
R.N. Patel ◽  
Yogendra Pratap Singh ◽  
Yogendra Singh ◽  
Ray J. Butcher ◽  
Jerry P. Jasinski
Keyword(s):  
Superoxide Dismutase ◽  
Single Crystal ◽  
Crystal Structures ◽  
Binuclear Copper ◽  
Single Crystal Structures

scholarly journals Manipulating the Conformation of 3,2′:6′,3″-Terpyridine in [Cu2(μ-OAc)4(3,2′:6′,3″-tpy)]n 1D-Polymers

Chemistry ◽  
2021 ◽  
Vol 3 (1) ◽  
pp. 182-198
Author(s):  
Dalila Rocco ◽  
Samantha Novak ◽  
Alessandro Prescimone ◽  
Edwin C. Constable ◽  
Catherine E. Housecroft
Keyword(s):  
Single Crystal ◽  
Crystal Structures ◽  
Metal Binding ◽  
Polymer Chains ◽  
X Ray Diffraction ◽  
Face To Face ◽  
Single Crystal Structures ◽  
Π Stacking ◽  
Metal Binding Domain ◽  
Packing Interactions

We report the preparation and characterization of 4′-([1,1′-biphenyl]-4-yl)-3,2′:6′,3″-terpyridine (1), 4′-(4′-fluoro-[1,1′-biphenyl]-4-yl)-3,2′:6′,3″-terpyridine (2), 4′-(4′-chloro-[1,1′-biphenyl]-4-yl)-3,2′:6′,3″-terpyridine (3), 4′-(4′-bromo-[1,1′-biphenyl]-4-yl)-3,2′:6′,3″-terpyridine (4), and 4′-(4′-methyl-[1,1′-biphenyl]-4-yl)-3,2′:6′,3″-terpyridine (5), and their reactions with copper(II) acetate. Single-crystal structures of the [Cu2(μ-OAc)4L]n 1D-coordination polymers with L = 1–5 have been determined, and powder X-ray diffraction confirms that the single crystal structures are representative of the bulk samples. [Cu2(μ-OAc)4(1)]n and [Cu2(μ-OAc)4(2)]n are isostructural, and zigzag polymer chains are present which engage in π-stacking interactions between [1,1′-biphenyl]pyridine units. 1D-chains nest into one another to give 2D-sheets; replacing the peripheral H in 1 by an F substituent in 2 has no effect on the solid-state structure, indicating that bifurcated contacts (H...H for 1 or H...F for 2) are only secondary packing interactions. Upon going from [Cu2(μ-OAc)4(1)]n and [Cu2(μ-OAc)4(2)]n to [Cu2(μ-OAc)4(3)]n, [Cu2(μ-OAc)4(4)]n, and [Cu2(μ-OAc)4(5)]n·nMeOH, the increased steric demands of the Cl, Br, or Me substituent induces a switch in the conformation of the 3,2′:6′,3″-tpy metal-binding domain, and a concomitant change in dominant packing interactions to py–py and py–biphenyl face-to-face π-stacking. The study underlines how the 3,2′:6′,3″-tpy domain can adapt to different steric demands of substituents through its conformational flexibility.

Syntheses and single-crystal structures of novel soluble phosphonato- and phosphinato-bridged titanium oxo alkoxides

1999 ◽  
pp. 1537-1538 ◽  
Author(s):  
Gilles Guerrero ◽  
Michael Mehring ◽  
P. Hubert Mutin ◽  
Françoise Dahan ◽  
André Vioux
Keyword(s):  
Single Crystal ◽  
Crystal Structures ◽  
Single Crystal Structures
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