Ueber die Ammoniummoleküle der Metalle

What’s in a Name?—A Short History of Coordination Chemistry from Then to Now

“…This colour-based nomenclature can be viewed as the first systematic approach to relating the constitution of a series of coordination compounds through their names. Logical extensions of the Carl Weltzien published three papers attempting to rationalize the constitution of these cobalt complexes into the prevalent "ammonium theory" [110][111][112]. Although these papers are models of logical analysis, they clearly identify the problem of formulating these compounds in a meaningful manner before the Werner model.…”

“…Although these papers are models of logical analysis, they clearly identify the problem of formulating these compounds in a meaningful manner before the Werner model. An example of the complexity of notation is seen in Figure 7, which presents the proposed "structure" of the sulfate salt of the luteo complex [Co(NH 3 ) 6 ] 3+ [110]. In a strange twist of fate, Werner reanimated the ammonium model in a paper from 1903 entitled Die Ammoniumsalze als einfachste Metallammoniake (The ammonium salts as the simplest metal-ammine complexes) [113].…”

“…In a strange twist of fate, Werner reanimated the ammonium model in a paper from 1903 entitled Die Ammoniumsalze als einfachste Metallammoniake (The ammonium salts as the simplest metal-ammine complexes) [113]. [110]. There is little, if any, resemblance to the subsequent Werner formulations beyond the overall stoichiometry (corrected for the doubled cobalt atom).…”

“…It is appropriate to summarize the situation at this point in the text. A remarkably good summary is given by William Odling in his 1855 translation of [110]. There is little, if any, resemblance to the subsequent Werner formulations beyond the overall stoichiometry (corrected for the doubled cobalt atom).…”