Related Experiment Video
Updated: Jun 28, 2026

07:08
In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films
Published on: January 17, 2017
A gold-containing TiO complex: a crystalline molecular precursor as an alternative route to Au/TiO2 composites
Markus Rohe1, Elke Löffler, Martin Muhler
1Anorganische Chemie I, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801 Bochum, Germany.
Dalton Transactions (Cambridge, England : 2003)
|November 6, 2008
Abstract:
The gold-containing titanium peroxo-complex AuCl4(NH4)7[Ti4(O2)4(Hcit)2(cit)2].12H2O 1 allows an easy reproducible access to pure Au/TiO2 composites.
Related Concept Videos
Formation of Complex Ions
A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
EDTA: Auxiliary Complexing Reagents
EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...

