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Thiazyl Trifluoride (NSF3) Adducts and Imidodifluorosulfate (F2OSN-) Derivatives of Hg(OTeF5)2
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2015-09-28 00:00:00 , DOI: 10.1021/acs.inorgchem.5b01769
John R. DeBackere 1 , Hélène P. A. Mercier 1 , Gary J. Schrobilgen 1
Affiliation  

Reactions of Hg(OTeF5)2 with excess amounts of NSF3 at 0 °C result in the formation of NSF3 adducts having the compositions [Hg(OTeF5)2·N≡SF3] (1), [Hg(OTeF5)2·2N≡SF3]2 (2), and Hg3(OTeF5)6·4N≡SF3 (3). When the reactions are carried out at room temperature, oxygen/fluorine metatheses occur yielding the F2OSN- derivatives [Hg(OTeF5)(N═SOF2)·N≡SF3] (4) and [Hg3(OTeF5)5(N═SOF2)·2N≡SF3]2 (5). The proposed reaction pathway leading to F2OSN- group formation occurs by nucleophilic attack by a F5TeO- group at the sulfur(VI) atom of NSF3, followed by TeF6 elimination. Tellurium hexafluoride formation was confirmed by 19F NMR spectroscopy. The NSF3 molecules are terminally N-coordinated to mercury, whereas the F2OSN- ligands are N-bridged to two mercury atoms. The compound series was characterized by low-temperature single-crystal X-ray diffraction and low-temperature Raman spectroscopy. Several structural motifs are observed within this structurally diverse series. These include the infinite chain structures of the related compounds, 1 and 4; 2, a dimeric structure which possesses an (HgOμ)2 ring at its core; 3, a structure based on a cage comprised of a (HgOμ)3 ring that is capped on each face by μ3-oxygen bridged F5TeO- groups; and 5, a dimeric structure possessing two distorted (Hg3O2N) rings that are formally derived from 3 by replacement of a F5TeO- group by a F2OSN- group in each ring. Quantum-chemical calculations were carried out to gain insight into the bonding of the μ3-oxygen bridged teflate groups observed in structure 3. Compounds 15 represent a novel class of neutral transition metal complexes with NSF3, providing the first examples of NSF3 coordination to mercury. Compounds 4 and 5 also provide the only examples of F2OSN- derivatives of mercury that have been characterized by single-crystal X-ray diffraction.

中文翻译:

Hg(OTeF 52的三氟噻唑基(NSF 3)加合物和亚氨基氟硫酸盐(F 2 OSN-)衍生物

汞柱(OTeF的反应52与过量的NSF的3在0℃下导致NSF的形成3个加合物具有的组合物[汞柱(OTeF 52 ·N≡SF 3 ] 1),[Hg(上OTeF 52 ·2N≡SF 3 ] 22),和Hg 3(OTeF 56 ·4N≡SF 33)。当反应在室温下进行时,发生氧/氟复分解反应,生成F 2。OSN-衍生物[汞柱(OTeF 5)(N═SOF 2)·N≡SF 3 ] 4)和[汞柱3(OTeF 55(N═SOF 2)·2N≡SF 3 ] 25) 。所提出的导致F 2 OSN-基团形成的反应途径是通过NSF 3的硫(VI)原子上的F 5 TeO-基团的亲核攻击而发生的,然后消除TeF 6。通过19 F NMR光谱确认六氟化碲的形成。NSF 3分子末端被N配位至汞,而F 2 OSN配体被N桥连至两个汞原子。通过低温单晶X射线衍射和低温拉曼光谱表征该化合物系列。在这个结构多样的系列中观察到了几个结构基序。其中包括相关化合物14的无限链结构;2,一种二聚体结构,其具有一个(氧化汞μ2在其核心环; 3,一种结构基于由(氧化汞的笼μ3,其通过对每个面封端环μ 3 -氧桥连˚F5个TeO-组;和5,具有两个扭曲的(Hg 3 O 2 N)环的二聚体结构,其通过在每个环中用F 2 OSN-基团取代F 5 TeO-基团而正式衍生自3。量子化学计算进行了深入了解的μ的接合3 -氧桥连的在结构中观察到teflate组3。化合物1 - 5代表一类新的具有NSF中性过渡金属配合物3,提供NSF的第一实施例3的协调,以汞。化合物4图5还提供了已经通过单晶X射线衍射表征的汞的F 2 OSN-衍生物的唯一实例。
更新日期:2015-09-28
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