Preparation and structural characterization of the hexatungsten cluster complex (EDTEH)2[W6(μ3-Cl)8Cl6], (EDTEH=(MeO2CCH2)2N(H)CH2CH2N(CH2CO2Me)2+
Abstract
The hexanuclear tungsten cluster complex [W6(μ3-Cl)8Cl6]2−,1 was isolated as a salt of the cation (MeO2CCH2)2N(H)CH2CH2N(CH2CO2Me)2+, EDTEH+, by crystallization from methanol solvent of the product obtained from the reaction of (H3O)2[W6(μ3-Cl)8Cl3] with the disodium salt of ethylenediaminetetraacetic acid. The compound was charcterized by single-crystal X-ray diffraction analysis. The cluster anion contains an octahedral arrangement of six tungsten atoms with chloride ligands bridging the eight triangular faces of the cluster and one chloride ligand terminally coordinated to each of the six tungsten atoms. The cation (EDTEH)+ achieves its positive charge by protonation of one of the nitrogen atoms. Crystal data: space group = P21/a,a=10.689(2) Å,b=22.931(6) Å,c=12.093(3) Å, β=98.41(2)°,Z=2, 2476 reflections,R=0.028.
Key words
Tungsten chloride hexatungsten crystal structurePreview
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References
- 1. (a)T. Saito, A. Yoshikawa, T. Yamagata, H. Imoto, and K. Unoura (1989).Inorg. Chem. 28, 3588;Google Scholar
- 1. (b)T. Saito, N. Yamamoto, T. Yamagata, and H. Imoto (1988).J. Am. Chem. Soc. 110, 1646.Google Scholar
- 2.T. C. Zietlow, W. P. Schaefer, B. Sadeghi, N. Hua, and H. B. Gray (1986).Inorg. Chem. 25, 2195.Google Scholar
- 3. (a)T. Saito, H. Manabe, T. Yamagata, and H. Imoto (1987).Inorg. Chem. 26, 1362;Google Scholar
- 3. (b)T. C. Zietlow, W. P. Schaefer, B. Sadeghi, D. G. Nocera, and H. B. Gray (1986).Inorg. Chem. 25, 2195.Google Scholar
- 4.R. D. Hogue and R. E. McCarley (1970).Inorg. Chem. 9, 1354.Google Scholar
- 5. (a)International Tables for X-Ray Crystallography (Kynoch Press, Birmingham, England, 1975), Vol. IV, Table 2.2B, pp. 99–101;Google Scholar
- 5. (b)Ibid., Table 2.3.1, pp. 149–150.Google Scholar