Transition metal oxalate complexes are coordination complexes with oxalate (C2O42−) ligands. Some are useful commercially, but the topic has attracted regular scholarly scrutiny. Oxalate (C2O42-) is a kind of dicarboxylate ligand.[1] As a small, symmetrical dinegative ion, oxalate commonly forms five-membered MO2C2 chelate rings. Mixed ligand complexes are known, e.g., [Co(C2O4)(NH3)4]κ+.[2]
Structures of some metal oxalate complexes
[Cr2(ox)5]4-.
Potassium ferrioxalate (K3[Fe(C2O4)3]·3H2O)
Oxaliplatin, an anticancer drug
[Zr(ox)4]4-
^Krishnamurty, Kotra V.; Harris, Gordon M. (1961). "The Chemistry of the Metal Oxalato Complexes". Chemical Reviews. 61 (3): 213–246. doi:10.1021/cr60211a001.
^Bernal, Ivan; Cetrullo, James (1990). "The phenomenon of conglomerate crystallization. XIX. Clavic dissymmetry in coordination compounds. XVII". Structural Chemistry. 1 (2–3): 235–243. doi:10.1007/BF00674267. S2CID 96021604.
and 28 Related for: Transition metal oxalate complex information
K+. The anion is a transitionmetaloxalatecomplex consisting of an iron atom in the +3 oxidation state and three bidentate oxalate C2O2−4 ligands. Potassium...
turn known as ligands or complexing agents. Many metal-containing compounds, especially those that include transitionmetals (elements like titanium that...
Transitionmetal carboxylate complexes are coordination complexes with carboxylate (RCO2−) ligands. Reflecting the diversity of carboxylic acids, the...
dimethyl oxalate (m.p. 52.5 to 53.5 °C, 126.5 to 128.3 °F). It forms an acid chloride called oxalyl chloride. Transitionmetaloxalatecomplexes are numerous...
K2Fe(C2O4)2(H2O)x. The anion is a transitionmetaloxalatecomplex, consisting of an atom of iron in the +2 oxidation state bound to oxalate (C 2O2− 4) ligands and...
compounds. Octahedral transition-metalcomplexes containing amines and simple anions are often referred to as Werner-type complexes. When two or more types...
of the chloro complex [Mo2Cl8]4−. There are a few divalent and trivalent aqua ions of transitionmetals in the second and third transition series: ruthenium(II)...
fluorides and oxalate bromides. Oxalate chlorides may be produced by treating an oxalate salt with concentrated hydrochloric acid, or with a metal oxide dissolved...
cations Na+. The anion is a transitionmetalcomplex consisting of an iron atom in the +3 oxidation state and three bidentate oxalate ions C2O2−4 anions serving...
lustrous transitionmetal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in...
was introduced by Georg Wittig in 1958. Ate complexes are common for metals, including the transitionmetals (groups 3-11), as well as the metallic or semi-metallic...
anions. Oxalate acts as a ligand, which normally complexes two metal atoms. An oxalate nitrate compound may also be called a nitrate oxalate. In chemical...
compounds include the sulfite oxalates and oxalate selenates. Oxalate sulfates may be deposited from a solution in water of the metal anions and sulfate with...
element in addition to the oxalate anion are double salts of caesium and oxalate. The oxalate may form a complex with a metal that can make a salt with...
Dithiolene metalcomplexes are complexes containing 1,2-dithiolene ligands. 1,2-Dithiolene ligands, a particular case of 1,2-dichalcogenolene species...
functional group that binds to a central metal atom to form a coordination complex. The bonding with the metal generally involves formal donation of one...
[Fe(C2O4)3]3−. It is a transitionmetalcomplex consisting of an iron atom in the +3 oxidation state and three bidentate oxalate ions C2O2−4 anions acting...
a ligand in organometallic chemistry, giving rise to many transitionmetal indenyl complexes. Indane Indole Isoindene Indenyl effect Indenone International...
thiocyanate. More complex bridging ligands are also well known including oxalate, malonate, and pyrazine. Prior to ET, the bridged complex must form, and...
important oxalates include Ag2C2O4, BaC2O4, CaC2O4, Ce2(C2O4)3, K2C2O4, and Na2C2O4. Carbonyls are coordination complexes between transitionmetals and carbonyl...
needle-like crystals of calcium oxalate monohydrate inside such cells, called Raphides. Calcium along with other metal ions are sequestered in idioblast...
dihydrate dehydrates at 258° and decomposes to Ni metal over 316 °C. Double oxalate salts where oxalate is a ligand on the nickel atom may be called oxalatonickelates...
Iron shows the characteristic chemical properties of the transitionmetals, namely the ability to form variable oxidation states differing by steps of...
(from Latin ferrum 'iron') and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass...
These reactions require metal catalysts, which bind and activate the CO. These processes involve transitionmetal acyl complexes as intermediates. Much...
element; it has symbol Y and atomic number 39. It is a silvery-metallic transitionmetal chemically similar to the lanthanides and has often been classified...