Clusters of the heavier elements of main groups 14-16: A novel synthetic route for polyanions in molten crown ether

Thomas F. Fässler; Rudolf Hoffmann

Clusters of the heavier elements of main groups 14-16: A novel synthetic route for polyanions in molten crown ether

Thomas F. Fässler, Rudolf Hoffmann

ETH Zurich

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A novel procedure allows the synthesis of homoatomic polyanions directly from the elements E (E = Sn, As, Sb, Te) in molten A/18-crown-6 as reaction medium (A = K, Rb) at temperatures between 40 and 80° [1]. The reactions are carried out by adding E to mixtures of A and 18-crown-6 that proved to form stable melts under these conditions. Further work off using ethylenediamine or DMF as solvent yielded single crystals of the following compounds: [K(18-crown-6)]₄Sn₉ (1), [K(18-crown-6)]₃KSn₉·en (2), [K(18-crown-6)]₃As₇ (3), [K([2.2.2]crypt)]₂[K(18-crown-6)]Sb₇·0.5en (4), [Rb(18-crown-6)]₃Sb₇ (5), [K(18-crown-6)]₂Te₄ (6), and [K(18-crown-6)]₂Te₄·en (7). In all compounds short contacts between the Zintl ions and A-atoms are observed. The influence of cation-anion interactions on the structure of these anions is discussed.

Original language	English
Pages (from-to)	158-159
Number of pages	2
Journal	Chimia
Volume	52
Issue number	4
State	Published - 1998
Externally published	Yes

Cite this

@article{dea4805c9f984140bc2794e4fc533c8b,

title = "Clusters of the heavier elements of main groups 14-16: A novel synthetic route for polyanions in molten crown ether",

abstract = "A novel procedure allows the synthesis of homoatomic polyanions directly from the elements E (E = Sn, As, Sb, Te) in molten A/18-crown-6 as reaction medium (A = K, Rb) at temperatures between 40 and 80° [1]. The reactions are carried out by adding E to mixtures of A and 18-crown-6 that proved to form stable melts under these conditions. Further work off using ethylenediamine or DMF as solvent yielded single crystals of the following compounds: [K(18-crown-6)]4Sn9 (1), [K(18-crown-6)]3KSn9·en (2), [K(18-crown-6)]3As7 (3), [K([2.2.2]crypt)]2[K(18-crown-6)]Sb7·0.5en (4), [Rb(18-crown-6)]3Sb7 (5), [K(18-crown-6)]2Te4 (6), and [K(18-crown-6)]2Te4·en (7). In all compounds short contacts between the Zintl ions and A-atoms are observed. The influence of cation-anion interactions on the structure of these anions is discussed.",

author = "F{\"a}ssler, {Thomas F.} and Rudolf Hoffmann",

year = "1998",

language = "English",

volume = "52",

pages = "158--159",

journal = "Chimia",

issn = "0009-4293",

publisher = "Swiss Chemical Society",

number = "4",

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TY - JOUR

T1 - Clusters of the heavier elements of main groups 14-16

T2 - A novel synthetic route for polyanions in molten crown ether

AU - Fässler, Thomas F.

AU - Hoffmann, Rudolf

PY - 1998

Y1 - 1998

N2 - A novel procedure allows the synthesis of homoatomic polyanions directly from the elements E (E = Sn, As, Sb, Te) in molten A/18-crown-6 as reaction medium (A = K, Rb) at temperatures between 40 and 80° [1]. The reactions are carried out by adding E to mixtures of A and 18-crown-6 that proved to form stable melts under these conditions. Further work off using ethylenediamine or DMF as solvent yielded single crystals of the following compounds: [K(18-crown-6)]4Sn9 (1), [K(18-crown-6)]3KSn9·en (2), [K(18-crown-6)]3As7 (3), [K([2.2.2]crypt)]2[K(18-crown-6)]Sb7·0.5en (4), [Rb(18-crown-6)]3Sb7 (5), [K(18-crown-6)]2Te4 (6), and [K(18-crown-6)]2Te4·en (7). In all compounds short contacts between the Zintl ions and A-atoms are observed. The influence of cation-anion interactions on the structure of these anions is discussed.

AB - A novel procedure allows the synthesis of homoatomic polyanions directly from the elements E (E = Sn, As, Sb, Te) in molten A/18-crown-6 as reaction medium (A = K, Rb) at temperatures between 40 and 80° [1]. The reactions are carried out by adding E to mixtures of A and 18-crown-6 that proved to form stable melts under these conditions. Further work off using ethylenediamine or DMF as solvent yielded single crystals of the following compounds: [K(18-crown-6)]4Sn9 (1), [K(18-crown-6)]3KSn9·en (2), [K(18-crown-6)]3As7 (3), [K([2.2.2]crypt)]2[K(18-crown-6)]Sb7·0.5en (4), [Rb(18-crown-6)]3Sb7 (5), [K(18-crown-6)]2Te4 (6), and [K(18-crown-6)]2Te4·en (7). In all compounds short contacts between the Zintl ions and A-atoms are observed. The influence of cation-anion interactions on the structure of these anions is discussed.

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M3 - Article

AN - SCOPUS:0040249053

SN - 0009-4293

VL - 52

SP - 158

EP - 159

JO - Chimia

JF - Chimia

IS - 4

ER -

Clusters of the heavier elements of main groups 14-16: A novel synthetic route for polyanions in molten crown ether

Abstract

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