A structural model of the ferrichrome type siderophore: chiral preference induced by intramolecular hydrogen bonding networks in ferric trihydroxamate

2001 ◽  
pp. 978-979 ◽  
Author(s):  
Kenji Matsumoto ◽  
Tomohiro Ozawa ◽  
Koichiro Jitsukawa ◽  
Hisahiko Einaga ◽  
Hideki Masuda
2021 ◽  
Vol 50 (35) ◽  
pp. 12088-12092
Author(s):  
Clare A. Leahy ◽  
Michael J. Drummond ◽  
Josh Vura-Weis ◽  
Alison R. Fout

Hydrogen bonding networks are vital for metallo-enzymes to function; however, modeling these systems is non-trivial. The development of 1st-row transition metal chloride complexes with intramolecular hydrogen-bonding interactions are detailed herein.


2019 ◽  
Author(s):  
Chuanli Wu ◽  
Aminah Alqahtani ◽  
Sara Sangtarash ◽  
Andrea Vezzoli ◽  
Hatef Sadeghi ◽  
...  

As a small molecule possessing both strong H-bond donor and acceptor functions, 1H-imidazole can participate in extensive homo- or heteromolecular H-bonding networks. These properties are important in Nature, as imidazole moieties are incorporated in many biologically-relevant compounds. Imidazole also finds applications ranging from corrosion inhibition to fire retardants and photography. We have found a peculiar behaviour of imidazole during scanning tunnelling microscopy-break junction (STM-BJ) experiments, in which oligomeric chains connect the two electrodes and allow efficient charge transport. We attributed this behaviour to the formation of hydrogen-bonding networks, as no evidence of such behaviour was found in 1-methylimidazole (incapable of participating in intramolecular hydrogen bonding). The results are supported by DFT calculations, which confirmed our hypothesis. These findings pave the road to the use of hydrogen-bonding networks for the fabrication of dynamic junctions based on supramolecular interactions.


Polyhedron ◽  
2013 ◽  
Vol 52 ◽  
pp. 261-267 ◽  
Author(s):  
David C. Lacy ◽  
Jhumpa Mukherjee ◽  
Robie L. Lucas ◽  
Victor W. Day ◽  
A.S. Borovik

2019 ◽  
Author(s):  
Chuanli Wu ◽  
Aminah Alqahtani ◽  
Sara Sangtarash ◽  
Andrea Vezzoli ◽  
Hatef Sadeghi ◽  
...  

As a small molecule possessing both strong H-bond donor and acceptor functions, 1H-imidazole can participate in extensive homo- or heteromolecular H-bonding networks. These properties are important in Nature, as imidazole moieties are incorporated in many biologically-relevant compounds. Imidazole also finds applications ranging from corrosion inhibition to fire retardants and photography. We have found a peculiar behaviour of imidazole during scanning tunnelling microscopy-break junction (STM-BJ) experiments, in which oligomeric chains connect the two electrodes and allow efficient charge transport. We attributed this behaviour to the formation of hydrogen-bonding networks, as no evidence of such behaviour was found in 1-methylimidazole (incapable of participating in intramolecular hydrogen bonding). The results are supported by DFT calculations, which confirmed our hypothesis. These findings pave the road to the use of hydrogen-bonding networks for the fabrication of dynamic junctions based on supramolecular interactions.


10.1002/jcc.2 ◽  
1996 ◽  
Vol 17 (16) ◽  
pp. 1804-1819 ◽  
Author(s):  
Attila Kov�cs ◽  
Istv�n Kolossv�ry ◽  
G�bor I. Csonka ◽  
Istv�n Hargittai

Sign in / Sign up

Export Citation Format

Share Document