twist-boat conformation

См. также в других словарях:

• Cyclohexane conformation — A cyclohexane molecule in chair conformation. Hydrogen atoms in axial positions are shown in red, while those in equatorial positions are in blue. A cyclohexane conformation is any of several three dimensional shapes that a cyclohexane molecule… …   Wikipedia

• Конформация — Конформации шестичленных циклов на примере циклогексана: 1  «кресло»; 3, 5  «твист» конформации; 4  «ванна»; 2  «полукресло», или «конверт» Конформация …   Википедия

• hydrocarbon — hydrocarbonaceous, adj. /huy dreuh kahr beuhn, huy dreuh kahr /, n. any of a class of compounds containing only hydrogen and carbon, as an alkane, methane, CH4, an alkene, ethylene, C2H4, an alkyne, acetylene, C2H2, or an aromatic compound,… …   Universalium

• Ring flip — Ring flipping (also known as ring inversion or ring reversal) is a phenomenon involving the interconversion (by rotation) about single bonds of cyclic conformers having equivalent ring shapes but not necessarily equivalent spatial positions of… …   Wikipedia

• Oxocarbenium — The general structure of an oxocarbenium ion An oxacarbenium ion is a canonical form of a carbocation, real or hypothetical, which places a formal positive charge on an oxygen atom.[1] They are common transition states for the hydrolysis of… …   Wikipedia

• sugars — Those carbohydrates (saccharides) having the general composition (CH2O)n and simple derivatives thereof. Although the simple monomeric s. (glycoses) are often written as polyhydroxy aldehydes or ketones, e.g., HOCH2–(CHOH)4–CHO for aldohexoses (… …   Medical dictionary