First characterization of an extended ammonium-ammonia complex 1∞[{NH4(NH3)4}+(μ-NH3)2] in the crystal structure of [NH4(NH3)4][Co(C2B9H11)2]•2NH3

被引：9

作者：

Rossmeier, T ^{[1
]}

Korber, N ^{[1
]}

机构：

[1] Univ Regensburg, Inst Anorgan Chem, D-93040 Regensburg, Germany

来源：

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2004年 / 630卷 / 15期

关键词：

liquid ammonia; hydrogen bonding; low-temperature crystal structure analysis; ammonium ion; carboranes; polycations;

D O I：

10.1002/zaac.200400339

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The compound [NH4(NH3)(4)][Co(C2B9H11)(2)] (.) 2 NH3 (1) was prepared by the reaction of Na[Co(C2B9H11)(2)] with a proton-charged ion-exchange resin in liquid ammonia. The ammoniate 1 was characterized by low temperature single-crystal X-ray structure analysis. The anionic part of the structure consists of [Co(C2B9H11)(2)](-) complexes, which are connected via C-(HH)-H-...-B dihydrogen bonds. Furthermore, 1 contains an infinite (1)(x)[{NH4(NH3)(4)}(+)(mu-NH3)(2)] cationic chain, which is formed by [NH4(NH3)(4)](+) ions linked by two ammonia molecules. The N-(HN)-N-... hydrogen bonds range from 1.92 to 2.71 Angstrom (DHA = Donor(...)Acceptor angles: 136-176degrees). Additional N-(HH)-H-...-B di-hydrogen bonds are observed ((HH)-H-...: 2.3-2.4 Angstrom).

引用

页码：2665 / 2668

页数：4

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