concerted reactions

См. также в других словарях:

• Concerted reaction — In chemistry, a concerted reaction is a chemical reaction in which all bond breaking and bond making occurs in a single step. Reactive intermediates or other unstable high energy intermediates are not involved. Concerted reaction rates tend not… …   Wikipedia

• Law of mass action — For other uses, see Mass action (disambiguation). In Chemistry, the law of mass action is a mathematical model that explains and predicts behaviors of solutions in dynamic equilibrium. It can be described with two aspects: 1) the equilibrium… …   Wikipedia

• Valency interaction formula — The Valency Interaction Formula, or VIF is a method for drawing molecular structural formulas based in quantum mechanics. The mathematical basis for VIF was formulated by Oktay Sinanoglu in a series of five papers published in 1984. [ Sinanoğlu,… …   Wikipedia

• Hoffmann , Roald — (1937–) Polish born American chemist Born in Zloczow, Poland (now Zolochez in Ukraine), Hoffmann was moved at the age of four with his family to a labor camp. His father was executed for trying to escape, but Hoffmann and his mother were smuggled …   Scientists

• reaction mechanism — Introduction       in chemical reactions (chemical reaction), the detailed processes by which chemical substances are transformed into other substances. The reactions themselves may involve the interactions of atoms (atom), molecules (molecule),… …   Universalium

• Ene reaction — The Ene reaction (also known as the Alder ene reaction) is a chemical reaction between an alkene with an allylic hydrogen (the ene) and a compound containing a multiple bond (the enophile), in order to form a new σ bond with migration of the ene… …   Wikipedia

• Oxidative addition — and reductive elimination are two important and related classes of reactions in organometallic chemistry.[1][2][3] Oxidative addition is a process that increases both the oxidation state and coordination number of a metal centre. The oxidative… …   Wikipedia

• 1,3-Dipolar cycloaddition — The 1,3 dipolar cycloaddition, also known as the Huisgen cycloaddition or Huisgen reaction, [1][2] is an organic chemical reaction belonging to the larger class of concerted, pericyclic cycloadditions. It is the reaction between a 1,3 dipole and… …   Wikipedia

• Proton-coupled electron transfer — (PCET) is a reaction mechanism that is thought to be common in redox reactions. It involves the concerted transfer of an electron and proton to or from a substrate.[1][2] In PCET, the proton and the electron (i) start from different orbitals and… …   Wikipedia

• Pericyclic reaction — In organic chemistry, a pericyclic reaction is a type of organic reaction wherein the transition state of the molecule has a cyclic geometry, and the reaction progresses in a concerted fashion. Pericyclic reactions are usually rearrangement… …   Wikipedia

• CIA leak scandal timeline — Note: This subject is also referred to as: CIA leak case timeline , Plamegate scandal timeline , and Plame affair timeline . The CIA leak scandal timeline (also known as the CIA leak case timeline, the Plamegate scandal timeline, and the Plame… …   Wikipedia