Encyclopedia of Chemistry

...

macromolecule A large molecule of high molecular mass composed of more than 100 repeated monomers (single chemical units of lowe ...

magnetic moment The twisting force exerted on a magnet or dipole when placed in a magnetic field. Magnetic moment and spin are i ...

has been extended to polar addition reactions as fol- lows. “In the HETEROLYTIC addition of a polar molecule to an alkene or alk ...

MCD SeeMAGNETIC CIRCULAR DICHROISM. McMillan, Edwin Mattison (1907–1991) American Physicist Edwin Mattison McMillan was born on ...

Concerning mediators of immediate hypersensitiv- ity, the most important include histamine, leukotriene e.g., SRS-A (slow-reacti ...

mercury battery No longer used or manufactured in the United States due to pollution potential. mesolytic cleavage Cleavage of a ...

levels. The band is not filled, and electrons are free to move in an electric field, giving typical metallic conduc- tivity. Som ...

methylidyne SeeCARBYNE. me-too drug A compound that is structurally very similar to already known DRUGs, with only minor pharmac ...

in which case Km= (k–1+ kcat)/k 1 (Briggs-Haldane con- ditions). It has more usually been applied only to the special case in wh ...

mineral A naturally occurring homogeneous solid, inorganically formed, with a definite chemical composi- tion, usually crystalli ...

Moco SeeMOLYBDENUM COFACTOR. model A synthetic COORDINATIONentity that closely approaches the properties of a METALion in a PROT ...

See also CHEMICAL REACTION; ORDER OF REACTION. molecular mechanics calculation An empirical cal- culational method intended to g ...

molecular rearrangement 183 Molecular Modeling by Karl F. Moschner, Ph.D. Models, representations of real objects, have long bee ...

184 molecular rearrangement been optimized to better reproduce structures for a spe- cific class of compounds, such as peptides ...

molecular rearrangement 185 lations may be performed at different levels of approxima- tion that can be divided into two classes ...

bond (unexpected on the basis of the principle of mini- mum structural change), as in the reaction CH 3 CH 2 CH 2 Br + AgOAc →(C ...

molybdenum cofactor(Moco) The molybdenum complex of the MOLYBDOPTERIN PROSTHETIC GROUP (LIGAND). In the molybdenum COFACTOR, the ...

pling) provide information about the oxidation, spin, and COORDINATIONstate of the ion. mother nuclide The nuclide that undergoe ...

atomic centers. Examples include the three-center bonds in diborane, the delocalized pi bonding of ben- zene, and BRIDGED CARBOC ...