Any combination of a cation associated with molecules or anions containing unshared pairs of electrons. The interaction can range from purely electrostatic to that approaching covalent character.

With respect to a complex we further define:

The term "complex" was found in the following pages:

Determination of arsenic species in water by means of capillary electrophoresis coupled to electrospray mass spectrometry | EVISA's News
Company database: Pfeiffer Vacuum GmbH
Instrument database: Flux Instruments GmbH & CO KG - Rheos HR
New CDC study on the effect of thimerosal exposure on neuropsychological characteristics of children is fueling the debate about the origin of autism | EVISA's News
Instrument database: PerkinElmer Inc. - Clarus 500 GC Mass Spectrometer
Instrument database: Shimadzu Europe - GCMS-QP2010 Plus
Fast speciation analysis of inorganic arsenic by using frontal chromatography for separation | EVISA's News
Instrument database: Applied Biosystems - 4800 MALDI TOF/TOF™ Analyzer
The Council Directive 80/68/EEC on groundwater pollution | EVISA's News
Directory of scientists: Peter M. May
Researchers Reveal Selenium's Metabolism In Life-Giving Amino Acids | EVISA's News
Liquid-liquid extraction in speciation analysis | EVISA's News
Instrument database: Applied Biosystems - 4700 Proteomics Analyzer
Instrument database: Shimadzu Europe - AA-6300
Instrument database: Thermo Scientific - Orbitrap Fusion™ Tribrid™ Mass Spectrometer
Journals database: Aquatic Ecosystem Health & Management
Instrument database: jas - joint analytical systems GmbH - Atomic Emission Detector - AED
New Strategy for Speciation Analysis of Gadolinium retained in Bone after Application of MR Contrast Agents | EVISA's News
Bioavailable and toxic platinum species present in silicone breast implants ? | EVISA's News
ISC'04 | EVISA's Agenda of Events