the spatial arrangement of atoms

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• stereochemistry — The branch of chemistry concerned with the spatial three dimensional relations of atoms in molecules, i.e., the positions the atoms in a compound bear in relation to one another in space. * * * ste·reo·chem·is·try .ster ē ō kem ə strē, .stir n,… …   Medical dictionary

• conformation — The spatial arrangement of a molecule achieved by rotation of groups about single covalent bonds, without breaking any covalent bonds; the latter restriction differentiates c. from configuration (as in anomers and related stereoisomers) where a… …   Medical dictionary

• configuration — 1. The general form of a body and its parts. 2. In chemistry, the spatial arrangement of atoms in a molecule. The c. of a compound ( e.g., a sugar) is the unique spatial arrangement of its atoms such that no other arrangement of these atoms is… …   Medical dictionary

• Crystallography — For the book of poetry, see Crystallography (book). A crystalline solid: atomic resolution image of strontium titanate. Brighter atoms are Sr and darker ones are Ti. Crystallography is the experimental science of the arrangement of atoms in… …   Wikipedia

• configuration — configurational, configurative /keuhn fig yeuhr euh tiv, yeuh ray tiv/, adj. configurationally, adv. /keuhn fig yeuh ray sheuhn/, n. 1. the relative disposition or arrangement of the parts or elements of a thing. 2. external form, as resulting… …   Universalium

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• stereochemistry — noun Etymology: International Scientific Vocabulary Date: 1890 1. a branch of chemistry that deals with the spatial arrangement of atoms and groups in molecules 2. the spatial arrangement of atoms and groups in a compound and its relation to the… …   New Collegiate Dictionary

• Chemical structure — A chemical structure includes molecular geometry, electronic structure and crystal structure of molecules. Molecular geometry refers to the spatial arrangement of atoms in a molecule and the chemical bonds that hold the atoms together. Molecular… …   Wikipedia

• Wislicenus, Johannes — ▪ German chemist born June 24, 1835, Kleineichstädt, Thuringia [Germany] died Dec. 5, 1902, Leipzig, Ger.       German chemist whose pioneering work led to the recognition of the importance of the spatial arrangement of atoms within a molecule.… …   Universalium