Premium
Synthesis and Crystal Structure of the Palladium(IV) Polyoxomolybdate, K 0.75 Na 3.75 [PdMo 6 O 24 H 3.5 ]·17H 2 O
Author(s) -
AngusDunne Sarah,
Burns Robert C.,
Craig Donald C.,
Lawrance Geoffrey A.
Publication year - 2010
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900129
Subject(s) - palladium , crystallography , crystal structure , chemistry , octahedron , x ray crystallography , aqueous solution , atom (system on chip) , diffraction , physics , catalysis , biochemistry , computer science , optics , embedded system
The first example of a heteropolyoxomolybdate containing palladium(IV) was isolated and characterized by X‐ray crystallography. The palladium(IV) hexamolybdate, K 0.75 Na 3.75 [PdMo 6 O 24 H 3.5 ]·17H 2 O, was isolated from an aqueous solution at pH 4.5 in the space group P \bar{1} , a 10.790(2), b 12.244(3), c 14.086(3) Å, α 113.77(1), β 90.41(1),γ 107.86(1)°, and the structure was determined using X‐ray diffraction methods, refining to a residual of 0.0301 for 5334 reflections. A formal “[PdMo 6 O 24 H 3 ] 5– ” subunit exhibits the basic Anderson structure, with two [PdMo 6 O 24 H 3 ] 5– cluster anions in the structure bridged by a hydrogen atom (formally an H + ) situated on a center of symmetry to give a “[Pd 2 Mo 12 O 48 H 7 ] 9– ” dimeric anion. The palladium(IV) atom occupies a slightly distorted octahedral environment, with Pd–O distances ranging from 1.968 to 2.009 Å.