Co-ordination chemistry of higher oxidation states. Part 26. Spectroscopic studies of tellurate complexes of the trivalent Group 1B metals. X-Ray structure of Na5[Cu{TeO4(OH)2}2]·16H 2O

William Levason*, Mark D. Spicer, Michael Webster

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The structure of Na5[Cu{TeO4(OH)2}2]·16H 2O has been determined by X-ray structure analysis. It crystallises in the triclinic space group P1 with a = 5.922(4), b = 8.939(2), c = 12.528(2) Å, α = 98.45(1), β = 99.11(3), γ = 93.82(4)°, and Z = 1. The structure was refined to R = 0.040 for 2 131 observed reflections [F > 3σ(F)]. The composition of the crystal examined was deficient in sodium leading to a proposed formula Na5-xHx[Cu{TeO4(OH)2} 2]·16H2O (x = 0.64). The discrete centrosymmetric anion contains CuIII with approximately square-planar CuO4 groups linked by trans edges to TeO4(OH)2 octahedra [Cu-O 1.833(4) and 1.839(4) Å]. The [M{TeO4(OH)2}2]5- ions (M = Cu, Ag, or Au) have been studied by i.r., u.v.-visible, and n.m.r. (125Te, 109Ag, and 17O) spectroscopy. For [Ag{TeO4(OH)2}2]5- the 125Te n.m.r. signal (+774 p.p.m.) is a doublet [2J(107,109Ag-125Te) = 73 Hz]. For the silver(III) ions [Ag{TeO4(OH)2}2]5- and [Ag{IO5(OH)}2]5- the 109Ag n.m.r. signals occur at ca. +2 800 p.p.m. from Ag+ (aq).

Original languageEnglish
Pages (from-to)1377-1381
Number of pages5
JournalJournal of the Chemical Society, Dalton Transactions
Issue number5
DOIs
Publication statusPublished - 1988
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

Fingerprint

Dive into the research topics of 'Co-ordination chemistry of higher oxidation states. Part 26. Spectroscopic studies of tellurate complexes of the trivalent Group 1B metals. X-Ray structure of Na5[Cu{TeO4(OH)2}2]·16H 2O'. Together they form a unique fingerprint.

Cite this