EnantiomerIn chemistry, an enantiomer ( ), also known as an optical isomer, antipode, or optical antipode, is one of a pair of molecular entities which are mirror images of each other and non-superposable. Enantiomer molecules are like right and left hands: one cannot be superposed onto the other without first being converted to its mirror image.
Chirality (chemistry)In chemistry, a molecule or ion is called chiral () if it cannot be superposed on its mirror image by any combination of rotations, translations, and some conformational changes. This geometric property is called chirality (). The terms are derived from Ancient Greek (cheir) 'hand'; which is the canonical example of an object with this property.
Cahn–Ingold–Prelog priority rulesIn organic chemistry, the Cahn–Ingold–Prelog (CIP) sequence rules (also the CIP priority convention; named after Robert Sidney Cahn, Christopher Kelk Ingold, and Vladimir Prelog) are a standard process to completely and unequivocally name a stereoisomer of a molecule.
Functional groupIn organic chemistry, a functional group is any substituent or moiety in a molecule that causes the molecule's characteristic chemical reactions. The same functional group will undergo the same or similar chemical reactions regardless of the rest of the molecule's composition. This enables systematic prediction of chemical reactions and behavior of chemical compounds and the design of chemical synthesis.SubstituentIn organic chemistry, a substituent is one or a group of atoms that replaces (one or more) atoms, thereby becoming a moiety in the resultant (new) molecule. The suffix -yl is used when naming organic compounds that contain a single bond replacing one hydrogen; -ylidene and -ylidyne are used with double bonds and triple bonds, respectively.
X-ray crystallographyTechnique used for determining crystal structures and identifying mineral compoundsTo determine the 3D structure of a crystal, an X-ray beam passes through a crystal and some X-rays are diffracted into a pattern that is indicative of the particular arrangements of atoms in the crystal.A powder X-ray diffractometer in motionX-ray crystallography is the experimental science of determining the atomic and molecular structure of a crystal, in which the structure causes a beam of incident X-rays to diffract in specific directions.
StereochemistryStereochemistry, a subdiscipline of chemistry, studies the spatial arrangement of atoms that form the structure of molecules and their manipulation. The study of stereochemistry focuses on the relationships between stereoisomers, which are defined as having the same molecular formula and sequence of bonded atoms (constitution) but differing in the geometric positioning of the atoms in space.
AtomSmallest unit of a chemical elementAtoms are the basic particles of the chemical elements and the fundamental building blocks of matter. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons. The chemical elements are distinguished from each other by the number of protons that are in their atoms. For example, any atom that contains 11 protons is sodium, and any atom that contains 29 protons is copper.
CarbonChemical element with atomic number 6 (C)–↑C↓Siboron ← carbon → nitrogen
ChemistryScientific study of matter's behavior and propertiesImages relating to the six main branches of chemistry, clockwise from the upper left : a BeF₂ glass network (inorganic chemistry), a caffeine molecule (organic chemistry), a reaction coordinate diagram (physical chemistry), a proton NMR spectrum (analytical chemistry), the RGS4 protein (biochemistry), and a glowstick using chemiluminescence (applied chemistry).Chemistry is the scientific study of the properties and behavior of matter.
Molecular entityIn chemistry and physics, a molecular entity, or chemical entity, is "any constitutionally or isotopically distinct atom, molecule, ion, ion pair, radical, radical ion, complex, conformer, etc., identifiable as a separately distinguishable entity".
Organic compoundOrganic compounds are a subclass of chemical compounds of carbon. Little consensus exists among chemists on the exact definition of organic compound; the only universally accepted definition is the quasi-tautological "organic compounds are the subject matter of organic chemistry". Generally, any large chemical compound containing a carbon–hydrogen or carbon–carbon bond is accepted as an organic compound.
rectusRelated word or term.sinisterRelated word or term.*As an Amazon Associate I earn from qualifying purchases.