Potassium Trioxalatogermanate IV

The trioxalatogermanate anion has been studied at least twice— by Tchakirian and by Moeller and Nielsen. Tchakirian lists some of the chemical and physical properties of the corresponding acid in solution, and Moeller and Nielsen report the separation of the optical isomers formed by the anion. These workers do not indicate 

The analyses for potassium and oxalate are relatively simple, but the analysis for germanium involves a number of operations. To determine potassium, a known weight of 

Potassium trioxalatogermanate is a white crystalline solid which decomposes at 180°, liberating carbon dioxide. It is very soluble in water but insoluble in ethanol, methanol, chloroform, and diethyl ether. The crystals are monoclinic with a = 9.89 A, b = 17.56 A, c = 14.95 A (all to 0.03 A), and /3 = 68°. The density is 2.02 g./cc. at 20°. There are six molecular units per unit cell. 

Inorganic Syntheses, Volume VIII Edited by Henry F. Holtzclaw, Jr. 1966 by McGraw-Hill Book Company, Inc. 

---

Potassium trioxalatogermanate(IV), synthesis 9 Potassium tetraoxalatozirconate(IV), -hafnate(IV), and -thorate-(IV), synthesis 12... 

Potassium trioxalatogermanate(IV), synthesis 9 Dichlorobis(2,4-pentanedionato)titanium(IV) (correction), synthesis 10... 

---