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XIX, On a New Series of Organic Bodies containing Metals. 
By Dr. E. Frankland, F.C.S., Professor of Chemistry, Owens College, Manchester. 
Communicated hy B. C. Brodie, Esq., F.R.S. 
Received May 10, — Read June 17, 1852. 
Under the above title I described, more than three years ago, some preliminary 
experiments'!- which proved the existence of certain organic compounds highly ana- 
logous to cacodyl, and, like that body, consisting of a metal, or in some cases phos- 
phorus, associated with the groups C2 H3, Hg, Cg H^, &c., and possessing, in most 
instances, highly remarkable powers of combination. I fixed the composition and 
studied some of the reactions of two of these bodies, to which the names Zincmethyl 
(C2H3Zn) and Zincethyl (C4H5Zn) were provisionally assigned, besides giving me- 
thods for procuring similar compounds containing tin, arsenic and phosphorus, by 
acting upon the iodides of the alcohol radicals with these elements, and expressing a 
belief, founded upon the similarity of functions existing between hydrogen and the 
groups of the form €„ that most, if not the whole, of the compounds con- 
tained in the following series might be formed; those marked thus * being at that 
time already known. 
Hydrogen series. 
Methyl series. 
Ethyl series. 
Butyl series. 
Valyl series. 
Amyl series. 
Phenyl series. 
ZnH 
As Hj* 
Sb Hj* 
P H3* 
Zn CoHj* 
As(C2 
Sb(CjH 3)3 
P (C.H 3 ) 3 * 
Zn C4H5* 
As (C4 HOa 
Sb (C4 H 3)3 
P (C 4 H 3)3 
Zn CgH, 
As(Cg HA 
Sb(CgH,)3 
P (C 6 H ,)3 
Zn C3 Hg 
AsCCsHgX 
Sb(C3Hg)3 
P (CsHg )3 
Zn CioH,i 
As(C3oH„)3 
Sb(C4oH„)3 
P (C,oHu )3 
Zn C12 H5 
As(C .3 Hg), 
Sb(C„Hg)3 
P (C,,H ,)3 
More recently Lowic and Schweitzer:}: have commenced labouring in the same field, 
and have filled up one of the gaps in the foregoing table by the formation of stibethyl 
(Sb(C4 Hg)), in acting upon iodide of ethyl with an alloy of antimony and potassium ; 
the same chemists state also the probable formation of similar compounds containing 
methyl and amyl in place of ethyl, and bismuth and phosphorus instead of antimony. 
I have continued my researches upon the organo-metallic bodies formed as above 
described, and having succeeded in increasing the list by the addition of several new 
members, I propose, in a series of papers, of which this is the first, to lay before the 
Royal Society the results of my experiments on the formation of bodies of this class. 
The agents which I have hitherto employed in the formation of these organo- 
t Annalen der Chemie und Pharmacie, Bd. LXXI. s. 213, and Journal of the Chemical Society, vol. ii. p. 297. 
+ Annalen der Chemie und Phamacie, Bd. LXXV. s. 315. 
3 H 2 
