Palladium(II) fluoride

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| Name = Palladium(II) fluoride

| ImageFile = PdF2-xtal-1993-unit-cell-CM-3D-ellipsoids.png

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| ImageName = unit cell of the crystal structure of palladium(II) fluoride

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|Section1={{Chembox Identifiers

| CASNo = 13444-96-7

| CASNo_Ref = {{cascite|correct|??}}

| PubChem = 83470

| EINECS = 236-598-8

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| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}

| ChemSpiderID = 75308

| SMILES = F[Pd]F

| InChI = 1/2FH.Pd/h2*1H;/q;;+2/p-2

| InChIKey = BHZSLLSDZFAPFH-NUQVWONBAA

| StdInChI_Ref = {{stdinchicite|changed|chemspider}}

| StdInChI = 1S/2FH.Pd/h2*1H;/q;;+2/p-2

| StdInChIKey_Ref = {{stdinchicite|changed|chemspider}}

| StdInChIKey = BHZSLLSDZFAPFH-UHFFFAOYSA-L

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|Section2={{Chembox Properties

| Pd=1 | F=2

| Appearance = pale violet crystalline solid; hygroscopic[http://www.hbcpnetbase.com/ CRC Handbook, 89th edition]

| Density = 5.76 g cm−3

| Solubility = reacts with water

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| MeltingPtC = 952

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|Section3={{Chembox Structure

| Coordination = octahedral

| CrystalStruct = tetragonal

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|Section4={{Chembox Thermochemistry

| DeltaHf =

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|Section7={{Chembox Hazards

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|Section8={{Chembox Related

| OtherAnions = Palladium(II) chloride
Palladium(II) bromide
Palladium(II) iodide

| OtherCations = Nickel(II) fluoride
Platinum(II) fluoride
Platinum(IV) fluoride

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Palladium(II) fluoride, also known as palladium difluoride, is the chemical compound of palladium and fluorine with the formula PdF2.

Synthesis

PdF2 is prepared by refluxing palladium(II,IV) fluoride, PdII[PdIVF6], with selenium tetrafluoride, SeF4.

:Pd[PdF6] + SeF4 → 2PdF2 + SeF6

Structure and paramagnetism

Like its lighter congener nickel(II) fluoride, PdF2 adopts a rutile-type crystal structure,{{ cite journal | first1 = B. | last1 = Bachmann | first2 = B. G. | last2 = Müller | title = Einkristalluntersuchungen an Fluoroperowskiten MPdF3 (M = Rb, K) und PdF2 | journal = Z. Anorg. Allg. Chem. | year = 1993 | volume = 619 | issue = 2 | pages = 387–391 | doi = 10.1002/zaac.19936190225 }}{{ cite book | last1 = Holleman | first1 = A. F. | last2 = Wiberg | first2 = Egon | last3 = Wiberg | first3 = Nils | title = Inorganic Chemistry | date = 2001 | publisher = Academic Press | location = Web | isbn = 9780123526519 | page = 1515 | url = https://books.google.com/books?id=Mtth5g59dEIC&pg=PA439 | access-date = 30 May 2020 | language = en}} containing octahedrally coordinated palladium, which has the electronic configuration t{{sup sub|6|2g}} e{{sup sub|2|g}}. This configuration causes PdF2 to be paramagnetic{{Greenwood&Earnshaw2nd|pages=1152–1153}} due to two unpaired electrons, one in each eg-symmetry orbital of palladium.

Applications

Palladium fluoride is an insoluble powder used in infrared optical sensors,{{cite web|url=https://www.americanelements.com/palladium-fluoride-13444-96-7|title=American_Elements.com}} and in situations where reactivity to oxygen makes palladium oxide unsuitable.

See also

References

{{reflist}}

{{Palladium compounds}}

{{fluorides}}

Category:Palladium compounds

Category:Fluorides

Category:Platinum group halides