Synthesis, vibrational and NMR spectroscopic characterization of [N(CH3)4][[IO2F2] and X-ray crystal structure of [N(CH3)4]2[IO2F2][HF2]

被引：9

作者：

Gerken, M ^{[1
]}

Mack, JP

Schrobilgen, GJ

Suontamo, RJ

机构：

[1] Univ Lethbridge, Dept Chem & Biochem, Lethbridge, AB T1K 3M4, Canada

[2] McMaster Univ, Dept Chem, Hamilton, ON L8S 4M1, Canada

[3] Univ Jyvaskyla, Dept Chem, FIN-40014 Jyvaskyla, Finland

来源：

JOURNAL OF FLUORINE CHEMISTRY | 2004年 / 125卷 / 11期

关键词：

iodine oxide fluorides; difluoroiodate; bifluoride; x-ray crystallography; vibrational spectroscopy; F-19 NMR spectroscopy;

D O I：

10.1016/j.jfluchem.2004.09.005

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The salt, [N(CH3)(4)][IO2F2], was prepared from [N(CH3)(4)][IO3] and 49% aqueous HF, and characterized by Raman, infrared, and F-19 NMR spectroscopy. Crystals of [N(CH3)(4)](2)[IO2F2][HF2] were obtained by reduction of [N(CH3)(4)][cis-IO2F4] in the presence of [N(CH3)(4)][F] in CH3CN solvent and were characterized by Raman spectroscopy and single-crystal X-ray diffraction: C2/m, a = 14.6765(2) Angstrom, b = 8.60490(10) Angstrom, c = 13.9572(2) Angstrom, beta = 120.2040(10)degrees, V = 1523.35(3) Angstrom(3), Z = 4 and R = 0.0192 at 210 K. The crystal structure consists of two IO2F2- anions that are symmetrically bridged by two HF2- anions, forming a [F2O2I(FHF)(2)IO2F2](4-) dimer. The symmetric bridging coordination for the HF2- anion in this structure represents a new bonding modality for the bifluoride anion. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：1663 / 1670

页数：8

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