Search results
Results from the WOW.Com Content Network
Methanol and its vapours are flammable. Moderately toxic for small animals – Highly toxic to large animals and humans (in high concentrations) – May be fatal/lethal or cause blindness and damage to the liver, kidneys, and heart if swallowed – Toxicity effects from repeated over exposure have an accumulative effect on the central nervous system, especially the optic nerve – Symptoms may ...
Note that the dipole moments drawn in this diagram represent the shift of the valence electrons as the origin of the charge, which is opposite the direction of the actual electric dipole moment. The bond dipole moment [5] uses the idea of electric dipole moment to measure the polarity of a chemical bond within a molecule. It occurs whenever ...
Example of a dipolar compound, represented by a resonance structure In organic chemistry , a dipolar compound or simply dipole is an electrically neutral molecule carrying a positive and a negative charge in at least one canonical description.
Often the PI 3 is made in situ by the reaction of red phosphorus with iodine in the presence of the alcohol; for example, the conversion of methanol to give iodomethane: [5] PI 3 + 3 CH 3 OH → 3 CH 3 I + " H 3 PO 3 " These alkyl iodides are useful compounds for nucleophilic substitution reactions, and for the preparation of Grignard reagents.
Transition dipole moment, the electrical dipole moment in quantum mechanics; Molecular dipole moment, the electric dipole moment of a molecule. Bond dipole moment, the measure of polarity of a chemical bond; Electron electric dipole moment, the measure of the charge distribution within an electron; Magnetic dipole moment, the measure of the ...
Dipole moment: 1.35 D: 1.61 D: 1.58 D: Hazards SDS: Main hazards: flammable, ingestion and inhalation toxicity hazard Flash point: 81 °C c.c. 86 °C 86 °C c.c. GHS pictograms: RTECS number GO6300000 GO6125000 GO6475000 Related compounds Related phenols: xylenols: Related compounds bromocresol green, cresol red: Except where noted otherwise ...
An example in organic chemistry of the role of geometry in determining dipole moment is the cis and trans isomers of 1,2-dichloroethene. In the cis isomer the two polar C−Cl bonds are on the same side of the C=C double bond and the molecular dipole moment is 1.90 D.
The reaction field method is used in molecular simulations to simulate the effect of long-range dipole-dipole interactions for simulations with periodic boundary conditions. Around each molecule there is a 'cavity' or sphere within which the Coulomb interactions are treated explicitly.