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ChemInform Abstract: Syntheses and Crystal Structures of the closo-Borates M2[B7H7] and M[B7H8] (M: PPh4, PNP, and N(n-Bu4)): The Missing Crystal Structure in the Series [BnHn]2- (n: 6—12).

✍ Scribed by Florian Schlueter; Eduard Bernhardt

Publisher: John Wiley and Sons
Year: 2011
Weight: 33 KB
Volume: 42
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.201121006

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✦ Synopsis

Syntheses and Crystal Structures of the closo-Borates M 2 [B 7 H 7 ] and M[B 7 H 8 ] (M: PPh4, PNP, and N(n-Bu4)): The Missing Crystal Structure in the Series [BnHn] 2- (n: 6-12). -The first convenient synthesis of the seven-vertex closo-[B7H7] 2-anion via O2-oxidation of [B9H9] 2-is reported. Protonation with NEt3•HCl resulted in salts of the [B7H8] -monoanion. The structures of (II)•CH2Cl2 (triclinic, space group P1, Z = 2), (IV)•3MeCN (monoclinic, P2 1 /n, Z = 4) and (V) (monoclinic, P2 1 /c, Z = 4) are determined. The salts of the [B7H7] 2-and [B7H8] -anions are characterized by 1 H, 1 H{ 11 B}, 11

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