[ho5(h2o)16 (oh)2as6w64o220]25-, a large novel polyoxoanion from trivacant keggin fragments

2006 Tungsten I 5700 [Ho 5 (H 2 O) 16 (OH) 2 As 6 W 64 O 220 ] 25- , a Large Novel Polyoxoanion from Trivacant Keggin Fragments. — Compound (VI) crystallizes in the triclinic space group P1 with Z= 2 (single crystal XRD) and contains one of the largest polyoxoanions known so far. The anion exhibits an unusual arrangement of six α-B-[AsW9O33] 9- Keggin fragments which are connected by a bridging [Ho5W10(H2O)16(OH)2As6O22] 29+ unit. The five Ho III atoms are in square-antiprismatic oxygen coordination. — (DREWES, D.; PIEPENBRINK, M.; KREBS*, B.; Z. Anorg. Allg. Chem. 632 (2006) 4, 534-536; Inst. Anorg. Anal. Chem., Westfael. Wilhelms-Univ., D-48149 Muenster, Germany; Ger., Abstr. Eng.) — Schramke 21- 023

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Page 1: [Ho5(H2O)16 (OH)2As6W64O220]25-, a Large Novel Polyoxoanion from Trivacant Keggin Fragments

2006

TungstenI 5700 [Ho5(H2O)16(OH)2As6W64O220]

25-, a Large Novel Polyoxoanion from Trivacant Keggin Fragments. — Compound (VI) crystallizes in the triclinic space group P1 with Z = 2 (single crystal XRD) and contains one of the largest polyoxoanions known so far. The anion exhibits an unusual arrangement of six α-B-[AsW9O33]

9- Keggin fragments which are connected by a bridging [Ho5W10(H2O)16(OH)2As6O22]

29+ unit. The five HoIII atoms are in square-antiprismatic oxygen coordination. — (DREWES, D.; PIEPENBRINK, M.; KREBS*, B.; Z. Anorg. Allg. Chem. 632 (2006) 4, 534-536; Inst. Anorg. Anal. Chem., Westfael. Wilhelms-Univ., D-48149 Muenster, Germany; Ger., Abstr. Eng.) — Schramke

21- 023

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