scholarly journals Coherent Vibration and Femtosecond Dynamics of the Platinum Complex Oligomers upon Intermolecular Bond Formation in the Excited State

2020 ◽  
Vol 59 (51) ◽  
pp. 23154-23161
Author(s):  
Munetaka Iwamura ◽  
Airi Fukui ◽  
Koichi Nozaki ◽  
Hikaru Kuramochi ◽  
Satoshi Takeuchi ◽  
...  
2020 ◽  
Vol 132 (51) ◽  
pp. 23547-23547
Author(s):  
Munetaka Iwamura ◽  
Airi Fukui ◽  
Koichi Nozaki ◽  
Hikaru Kuramochi ◽  
Satoshi Takeuchi ◽  
...  

2020 ◽  
Vol 132 (51) ◽  
pp. 23354-23361
Author(s):  
Munetaka Iwamura ◽  
Airi Fukui ◽  
Koichi Nozaki ◽  
Hikaru Kuramochi ◽  
Satoshi Takeuchi ◽  
...  

2000 ◽  
Vol 56 (5) ◽  
pp. 849-856 ◽  
Author(s):  
Clair Bilton ◽  
Frank H. Allen ◽  
Gregory P. Shields ◽  
Judith A. K. Howard

A systematic survey of the Cambridge Structural Database (CSD) has identified all intramolecular hydrogen-bonded ring motifs comprising less than 20 atoms with N and O donors and acceptors. The probabilities of formation Pm of the 50 most common motifs, which chiefly comprise five- and six-membered rings, have been derived by considering the number of intramolecular motifs which could possibly form. The most probable motifs (Pm > 85%) are planar conjugated six-membered rings with a propensity for resonance-assisted hydrogen bonding and these form the shortest contacts, whilst saturated six-membered rings typically have Pm < 10%. The influence of intramolecular-motif formation on intermolecular hydrogen-bond formation has been assessed for a planar conjugated model substructure, showing that a donor-H is considerably less likely to form an intermolecular bond if it forms an intramolecular one. On the other hand, the involvement of a carbonyl acceptor in an intramolecular bond does not significantly affect its ability to act as an intermolecular acceptor and thus carbonyl acceptors display a substantially higher inclination for bifurcation if one hydrogen bond is intramolecular.


ChemPhysChem ◽  
2006 ◽  
Vol 7 (6) ◽  
pp. 1372-1381 ◽  
Author(s):  
Yi-Ming Cheng ◽  
Shih-Chieh Pu ◽  
Chia-Jung Hsu ◽  
Chin-Hung Lai ◽  
Pi-Tai Chou

Author(s):  
GEORGE B. RICHTER-ADDO

The chemistry of nitric oxide (NO) has taken on new dimensions since the discovery, about a decade ago, of a myriad of biological events that NO participates in. Many of the foundations of metal-NO chemistry were laid out earlier by inorganic chemists and biochemists investigating the structures and electronic properties of the heme-NO moiety or its model compounds. Certainly, the persistent work over the last three decades by chemists working with metal nitrosyls has paid off. Current areas of research in heme-NO chemistry include (i) how the NO group approaches and binds to the metal center (or how it dissociates from the metal center); (ii) the ground state and excited state geometries of the metal-NOfragment; (iii) effects of the trans axial ligands on NO orientation and/or dissociation; and (iv) N-N bond formation from NO molecules catalyzed by heme groups.


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