Reactions of molecular hydrogen ruthenium complexes [RuH(.eta.2-H2)P4]BF4 with alkynes: preparation and crystal structure of the [Ru{.eta.3-(p-tolyl)C3CH(p-tolyl)}{PhP(OEt)2}4]BPh4 derivative

1991 ◽  
Vol 10 (8) ◽  
pp. 2876-2883 ◽  
Author(s):  
Gabriele. Albertin ◽  
Paola. Amendola ◽  
Stefano. Antoniutti ◽  
Sandra. Ianelli ◽  
Giancarlo. Pelizzi ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Molecular Hydrogen ◽  
Ruthenium Complexes

Synthesis, characterization and reactivity studies of electrophilic ruthenium(ii) complexes: a study of H2activation and labilization

2014 ◽  
Vol 43 (35) ◽  
pp. 13410-13423 ◽  
Author(s):  
K. S. Naidu ◽  
Yogesh P. Patil ◽  
Munirathinam Nethaji ◽  
Balaji R. Jagirdar
Keyword(s):  
Molecular Hydrogen ◽  
Ruthenium Complexes

Synthesis of some new highly electrophilic ruthenium complexes bearing the 1,2-bis(dipentafluorophenyl phosphino)ethane ligand and their reactivity studies towards activation and labilization of molecular hydrogen are reported.

scholarly journals Different Molecular Interaction between Collagen and α- or β-Chitin in Mechanically Improved Electrospun Composite

Marine Drugs ◽  
2019 ◽  
Vol 17 (6) ◽  
pp. 318 ◽  
Author(s):  
Hyunwoo Moon ◽  
Seunghwan Choy ◽  
Yeonju Park ◽  
Young Mee Jung ◽  
Jun Mo Koo ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Tensile Strength ◽  
Regenerative Medicine ◽  
Hydrogen Bonds ◽  
Molecular Interactions ◽  
Molecular Interaction ◽  
Molecular Hydrogen ◽  
Correlation Spectroscopy ◽  
Two Dimensional ◽  
Secondary Interaction

Although collagens from vertebrates are mainly used in regenerative medicine, the most elusive issue in the collagen-based biomedical scaffolds is its insufficient mechanical strength. To solve this problem, electrospun collagen composites with chitins were prepared and molecular interactions which are the cause of the mechanical improvement in the composites were investigated by two-dimensional correlation spectroscopy (2DCOS). The electrospun collagen is composed of two kinds of polymorphs, α- and β-chitin, showing different mechanical enhancement and molecular interactions due to different inherent configurations in the crystal structure, resulting in solvent and polymer susceptibility. The collagen/α-chitin has two distinctive phases in the composite, but β-chitin composite has a relatively homogeneous phase. The β-chitin composite showed better tensile strength with ~41% and ~14% higher strength compared to collagen and α-chitin composites, respectively, due to a favorable secondary interaction, i.e., inter- rather than intra-molecular hydrogen bonds. The revealed molecular interaction indicates that β-chitin prefers to form inter-molecular hydrogen bonds with collagen by rearranging their uncrumpled crystalline regions, unlike α-chitin.

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