cation complexing

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• Molecular switch — A molecular switch is a molecule that can be reversibly shifted between two or more stable states.[1] The molecules may be shifted between the states in response to changes in e.g. pH, light, temperature, an electrical current, microenvironment,… …   Wikipedia

• Crown ether — 18 crown 6 coordinating a potassium ion Crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups. The most common crown ethers are oligomers of ethylene oxide, the repeating unit being ethyleneoxy, i.e.,… …   Wikipedia

• coordination compound — Chem. complex (def. 10). Also called coordination complex. * * * ▪ chemistry Introduction  any of a class of substances with chemical structures in which a central metal atom is surrounded by nonmetal atoms or groups of atoms, called ligands… …   Universalium

• rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

• Mendelevium — fermium ← mendelevium → nobelium Tm ↑ Md ↓ (Upu) …   Wikipedia

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• Liquid-liquid extraction — Liquid liquid extraction, also known as solvent extraction and partitioning, is a method to separate compounds based on their relative solubilities in two different immiscible liquids, usually water and an organic solvent. It is an of a substance …   Wikipedia

• Pentazole — is an aromatic compound consisting of a five membered ring with all nitrogen atoms, one of which is bonded to a hydrogen atom. It has a molecular formula of HN5. Its SMILES structure is SMILES|S=n1n [nH] nn1. Although strictly speaking a… …   Wikipedia

• ether — etheric /i ther ik, i thear /, adj. /ee theuhr/, n. 1. Also called diethyl ether, diethyl oxide, ethyl ether, ethyl oxide, sulfuric ether. Chem., Pharm. a colorless, highly volatile, flammable liquid, C4H10O, having an aromatic odor and sweet,… …   Universalium

• Organogold chemistry — is the study of compounds containing carbon gold bonds. They are studied in academic research, but have not received widespread use otherwise. The dominant oxidation states for organogold compounds are I with coordination number 2 and a linear… …   Wikipedia

• Phosphorus — This article is about the chemical element. For other uses, see Phosphorus (disambiguation). silicon ← phosphorus → sulfur …   Wikipedia