654
E D G A R I:.
S M I T H ASI?
II.IKKY
13.
II.\RKIS.
TIII:
solution. As rutlieiiiurii, from the results just given, allies itseif with palladiuni. platiiiuin, arid riiociiuiii. so far as its deposition from a pliosphnte solution was c o n ~ e r i i e d ,it seemeti d iiiterest it from ii-idiurii coiil(1 1,e to ascertairi whether a separatioii effected. Sc j x i i x f lbii qf R Z I ~i 2~ 7~ 7 C ~.?in ~/ iLi In’di/(iii .-13 e re a x ai 11 ;i so111 tioii of rutheiiiuiii \\-as used in fiit!. cc. of which there was n . o ~ o o graiii of rutheuiiiiii. T o this were added ten cc. of ail iridium solution (equal to one-tenth gram’ of iridium) ten cc. of disndiuiii phosphate, I .03j8sp. g r . , aiid three cc. of phosphoric acid. T h e curl-eiit was S . ll.,rL=0.01 ampere. I t nctetl through tlie night. T h e deposit of rutlieiiiuiii iii each of tlic three esperinieiits wis txiglit, metallic. a n d perfectly adherent. I t vas waslied and dried as in the cleteriiiiiiatioiis clescritml in tlic preceding lines. Results : (if
I..
..........
2
o.0104g r a m of rut1ieniui:i. 0.00~6 ’ “
3 ............
. . . Additional experiments on tlie separation of the two metals mere made with similar result.;. I t would be of interest and i.alue to study the conduct of ruthenium in alkaline solutions. TT.’oliler’ observed that the metal could be quickly brouglit into solutioii n.hen the current acted upon it in the presence of an alkali. I t is altogether probable that, under such conditions. its separation from the other metals of the group could be quite readily brought about, but lack of material will, at least for the present, prevent any such iiir.estigation. 0.UlOO
V S I Y E X S I T T OF p E X S S \ I~V.~Xl.l.
[ C O S T K I X U T I O N F R O M T H E J O H S I r . 4 R K l S O S 14.i130K.+TOR\’
01‘
CH~~MISTKY No. . 5.1
T H E ACTION OF PHOSPHORUS PENTACHLORIDE UPON T H E DIOXIDES O F ZIRCONlUfl A N D THORIUfl. BY
EDGAR
S
F. S M I T H
AXNn H A R K S B. I f A R K I S . Hecclvrd hlay 3 1 , ~ H g j .
O U E years ago Weber ( / a h . rK59, 7 7 ) studied the action
of phosphorus pentachloride upon itiorgaiiic oxides, such as those of silicori, titanium, arid tin, and demonstrated that the lriiiri.
Chum. (l,tcb
