The most simple water molecular, H2O, is a fascinating but poorly understood molecule. Its unique ability to attract an exceptionally large number of hydrogen bonds induces the formation of a dense "hydrogen bond network" that has the potential to modify the properties of the surrounding molecules...
Serine-based β-lactamases of Class A, C and D all rely on a key water molecule to hydrolyze and inactivate β-lactam antibiotics. This process involves two conserved catalytic steps. In the first acylation step, the β-lactam antibiotic forms an acyl-en
In fact, the bond type is determined by the mutual orientation of neighboring molecules (the short-range order of each molecule) and can vary with time. Therefore, the network of bonds can simultaneously affect the properties of solid and the properties of liquid. The calculations (Fig. 2a) ...
(i.e., theirGiwi>0) to remain soluble in water. Due to their size, with linear as well as with more globular polymer molecules any hydrophobic patch that is exposed to the water interface is likely to bind to another such patch on another similar polymer molecule, with aΔGiwienergy ...
We report spectroscopic evidence of isomer interconversion in water cluster anions, (H2O)(n)(-), which occurs through the interaction with a benzene molecule. An anion complex composed of (H2O)(6)(-) and benzene, Bz center dot(H2O)(6)(-), is formed via the reaction of (H2O)(6)Ar-...
The F − anion will donate a pair of electrons to the B atom in the BF 3 molecule to form the tetrahedral BF 4 − anion. This type of bonding where one atom, the donor, supplies both electrons to form the bond to the second atom, the acceptor, is termed Coordinate, or sometimes...
The crystal structure of Cu(AcO)2(2,2′-bipy)·H2O is composed of dinuclear molecular units [Cu2(μ-AcO)2(AcO)2(2,2′-bipy)2] with a monodentate acetate and a bipy molecule coordinated to each copper atom and two syn–anti bridging acetate groups. The dinuclear units form ladder-...
A similar cluster was also adopted by Mondal and Narayana [42], to simulate the vRR spectrum of Guanosine, which showed that placing one water molecule at each H-bond position is mandatory for correctly reproducing the effect of solvation on vRR spectra. We computed the vRR spectra by two ...
The trimers, W3c and W3u, as well as the clusters W5c and W6c exhibit exclusively two-fold hydrogen bond motifs, i.e., each water molecule accepts and donates one hydrogen bond. Three-fold hydrogen bond coordination can be found in clusters W5p, W8c, W8p, and W10. A four-fold ...
What type of bond exists within the water molecule? A. polar covalent B. hydrogen bond C. ionic D. non-polar covalent Intra- and Intermolecular Bonding: Intramolecular bonding refers to the bonding happening within one molecule, such as covalent...