Gmelin, Leopold

Gmelin, Leopold (1788-1853) German chemist in Heidelberg wrote the Handbuch der Chemie (first edition 1817-1819). 

Other Sources of Selenium. In 1820 Leopold Gmelin prepared pure selenium from the fuming sulfuric acid of Graslitz [Kretzlitz] in Bohemia, and in the following year Buch and Wohler showed that this selenium came originally from the particles of iron pyrites dispersed in the alum shale from which the sulfuric acid had been prepared. 

Johann Friedrich Gmelin, 1748-1804. Father of Leopold Gmelm. Professor of chemistry at Tubingen and Gotbngen Famous chemical historian. His remarkable Geschichte der Chemie was published in 1797-99. 

He had continued his chemical experiments all through his medical course, and Professor Gmelin, who had not failed to notice his surprising skill, advised him to relinquish medicine for chemistry. Wohler therefore wrote to Berzelius for permission to enter his laboratory in Stockholm. On August 1 the great Swedish master gave his famous reply One who has studied under the direction of Herr Leopold Gmelin will certainly find little to learn with me.. . . You may come when you wish. ... 

Leopold Gmelin, 1788-1853. Professor of chemistry and medicine at Heidelberg. First author of the Handbuch der anorgamschen Chemie. Discoverer of potassium ferricyamde Son of Johann Friedrich Gmelin, the author of the Geschichte der Chemie. Leopold s nephew, Christian Gottlob Gmelin, was tlie first to observe the red color imparted to a flame by lithium salts. 

According to some authorities, the first metal ammine to be isolated in the solid state was the reddish yellow hexaamminecobalt(III) oxalate [Co(NH3)6]2(C204)3, described in 1822 by Leopold Gmelin (1788-1853).16 Gmelin also discovered several new double salts potassium ferricyanide, or potassium hexacyanoferrate(III), K3[Fe(CN)6l>17 the cobalticyanides or hexacyanocobaltates(III), M3[Co(CN) ],18 and the platinocyanides or tetracyanoplatinates(II), M2[Pt(CN)4].19All these substances certainly deserve to rank among the earliest known coordination compounds. 

Important new insights into the various ways in which the elements could be interrelated were gained during the middle decades of the nineteenth century. The German chemist Leopold Gmelin (1788-1853) pointed out in 1843 that whereas in some triads the atomic weights hardly differed at all, for example, in chromium-manganese-iron, in other triads... 

Friediich Wohler (1800-1882) was born in Eschersheim, Germany, and studied at Heidel berg under Leopold Gmelin. From 1836 to 1882, he was professor of chemistry at Gottingen. Wohler developed tho first industrial method for preparing aluminum metal, and he discovered several new elements In addition, he wrote textbooks about both inorganic and organic chemistry. 

French chemist Antoine-Jerome Balard and German chemist Leopold Gmelin independently discover bromine. 

Kratz, O. 1990, Chemie im Spiegel der schongeistigen Literatur zur Zeit Leopold Gmelins , in W. Lippert (ed.), Der 200. Geburtstag von Leopold Gmelin, Frankfurt/M. Gmelin Institut, pp. 73-112. 

Leopold Gmelin is the best-known member of a distinguished family ... 

Leopold Gmelin (Gottingen, 2 August 1788-Heidelberg, 13 April 1853), docent (1813), associate professor (1814) and professor (1817-51) of medicine and chemistry in Heidelberg, was a learned and independent investigator and author. He produced a very good handbook, which first appeared in two... 

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