The Kekulé Covalent Bond Arrangements of C60

The third orthogonal dynamic covalent bond

National Centre of Competence in Research (MSE), Switzerland; Web: http://www.nccr-m Department of Organic Chemistry, Universit [email protected]; Web: http://www.u 22 379 5123; Tel: +41 22 379 6523 Department of Chemistry, University of Zur † Electronic supplementary information ( results for all reported experiments. See D ‡ Present address: Department of Chemis China. Cite this: Chem. S...

Role of covalent bond formation in morphology and properties of PP/PP-g-PS binary blends

PP-g-PS copolymer is a typical compatilizer used in polypropylene and polystyrene immiscible blends. PP-g-PS copolymers with different side chain lengths were synthesized, and their thermal and mechanical properties were characterized by differential scanning calorimetry (DSC), polarizing optical microscopy (POM) and dynamic mechanical analysis (DMA), respectively. The DSC and POM results show ...

Formation of Semi - Covalent Bond in [ (

IR photodissociation (IRPD) spectra of [(N2O)nH2O] with n = 2–7 are measured in the 1100–3800 cm region. In parallel, the geometry optimization and the vibrational analysis are carried out at the B3LYP/6-311++G(d,p) level of theory. In the OH stretching (2400–3800 cm) region, the IRPD spectrum of the [(N2O)2H2O] ion shows a sharp band at 3452 cm and a broad one at around 2700 cm, which are assi...

Generation of Kekulé valence structures and the corresponding valence bond wave function

A new scheme, called "list of nonredundant bonds", is presented to record the number of bonds and their positions for the atoms involved in Kekulé valence structures of (poly)cyclic conjugated systems. Based on this scheme, a recursive algorithm for generating Kekulé valence structures has been developed and implemented. The method is general and applicable for all kinds of (poly)cyclic conjuga...

Reaching the maximum multiplicity of the covalent chemical bond.