Stabilization of Decatellurium Molecules in Isolated and Concatenated Clusters

Stabilization of Decatellurium Molecules in Isolated and Concatenated Clusters
复制标题

孤立和串联簇中十铍分子的稳定性

DOI:
10.1002/zaac.201200430
复制
发表时间:
2013
期刊:
Zeitschrift für anorganische und allgemeine Chemie
影响因子:
--
通讯作者:
M. Ruck
M. Ruck
中科院分区:
--
文献类型:
--
作者:
A. Günther;A. Isaeva;M. Ruck

文献摘要

参考文献

被引文献

相似文献

分子簇化合物(Te 10)M(TeX 4)(TeX 3)2的黑色闪亮晶体(M/X= Rh/Cl(1),Ir/Br(2)),(Te10)Ru(TeI4)(TeI2)2(3),(Te10)M(TeI4)(TeI2)2(TeI4)(Te2I2)(M= Rh(4),Ir(5))以及一维簇合物(Te 10 I2)Ir(TeI 4)2(Te 4)I2(6)通过富电子过渡金属M的熔融反应合成(M= Ru,Rh,Ir)与碲和TeX 4(X= Cl,Br,I)的混合物。单晶的X射线衍射显示化合物以三斜晶系空间群P <$1结晶。图4和图5显示了它们结构的3+ 1维调制。所有化合物均含有双核配合物,中心为μ-η4:η4-桥接Te 10单元,末端为卤代碲酸盐(II)基团。每个过渡金属阳离子都是由六个碲原子组成的稍微扭曲的八面体配位;两个MTe 6八面体共享一个共同的边缘。由于碲原子作为电子对供体,亲电M原子满足18电子规则。中心三环5.1. 1.13,5-decatellurium分子由两个黄道堆叠的Te 4环组成,它们通过两个碲原子连接。沿着这些几乎线性的桥的对称或不对称3c 4 e键类似于碲的聚阴离子形式,而三环构象通过与过渡金属阳离子的强键合而稳定。多中心键(3c 4 e)也存在于终端正方形Te+ IIX 4 2-和T形Te+ IIX 3-基团中。4和5的晶体结构以(Te 10)M(TeI 4)(TeI 2)2n+团簇(n≤ 2)层组织,如分子计算所示,这些团簇在氧化或还原时非常稳定。这些集群交替与inadmissive调制层,可能包括TeI 42-阴离子和以前未知的Te 2 I2分子。不确定性主要来自I和Te原子的相等散射功率以及Te 10单元的电子计数的已知灵活性。在6中,中性Te 4环将(Te 10 I2)Ir(Te I4)2簇连接成链,链平行于a轴。
Black, shiny crystals of the molecular cluster compounds (Te10) M (TeX4)(TeX3) 2 (M/X= Rh/Cl (1), Ir/Br (2)),(Te10) Ru (TeI4)(TeI2) 2 (3),(Te10) M (TeI4)(TeI2) 2 (TeI4)(Te2I2)(M= Rh (4), Ir (5)) as well as the one‐dimensional cluster polymer (Te10I2) Ir (TeI4) 2 (Te4) I2 (6) were synthesized by melting reactions of an electron‐rich transition metal M (M= Ru, Rh, Ir) with tellurium and TeX4 (X= Cl, Br, I). X‐ray diffraction on single‐crystals revealed that the compounds crystallize in the triclinic space group type P ̄1. 4 and 5 show 3+ 1‐dimensional modulations of their structures. All compounds contain binuclear complexes with central μ‐η4: η4‐bridging Te10 units and terminal halogenidotellurate (II) groups. Each of the transition metal cations is in a slightly distorted octahedral coordination by six tellurium atoms; the two MTe6 octahedra share a common edge. With the tellurium atoms acting as electron‐pair donors, the 18 electron rule is fulfilled for the electrophilic M atoms. The central tricyclo 5.1. 1.13, 5‐decatellurium molecule consists of two ecliptically stacked Te4 rings, which are linked through two tellurium atoms. The symmetric or asymmetric 3c4e bonds along these almost linear bridges are in analogy to polyanionic forms of tellurium, while the tricyclic conformation is stabilized by the strong bonding to the transition‐metal cations. Multi‐center bonding (3c4e) is also present in the terminal square Te+ IIX4 2–and the T‐shaped Te+ IIX3–groups. The crystal structures of 4 and 5 are organized in layers of (Te10) M (TeI4)(TeI2) 2n+ clusters (n≤ 2) that are quite robust upon oxidation or reduction as shown by molecular calculations. These clusters alternate with incommensurately modulated layers that probably consist of TeI42–anions and a previously unknown Te2I2 molecule. The uncertainty arises primarily from equal scattering powers of I and Te atoms as well as from the known flexibility of the electron count of the Te10 unit. In 6, neutral Te4 rings concatenate (Te10I2) Ir (TeI4) 2 clusters into chains, which run parallel to the a axis.
DOI: 10.1002/zaac.200300044
发表时间: 2003-06-01
影响因子: 1.4
作者:
Beck, J;Steden, F;Fölsing, H
通讯作者: Fölsing, H
Ein Germaniumsesquisulfid der Zusamensetzung (tBuGe)4S6 ohne Adamantanstruktur
DOI: --
发表时间: 1992
期刊:
影响因子: --
作者:
W. Ando;Tetsuji Kadowaki;Yoshio Kabe;Motohiko Ishii
通讯作者: Motohiko Ishii
新型导电阳离子自由基盐与碲基抗衡阴离子、四碘碲酸盐(II)和六碘二碲酸盐(II)的结构和物理性质
DOI: --
发表时间: 2002
期刊:
影响因子: --
作者:
M. Fujiwara;N. Tajima;T. Imakubo;M. Tamura;R. Kato
通讯作者: R. Kato
合成三碘化物五亚甲基三碲离子的阳离子 durch Anlagerung von Dimesityltellurid and das außergewöhnlich elektropicile Trimesityltritellurium-Ion†‡
DOI: --
发表时间: 1997
期刊:
影响因子: --
作者:
J. Jeske;W. D. Mont;P. G. Jones
通讯作者: P. G. Jones
Cs2Te13 和 Cs4Te28(富碲碲化物)甲醇热法合成 Cs3Te22 的合成和结构
DOI: --
发表时间: 1996
期刊:
影响因子: --
作者:
W. Sheldrick;M. Wachhold
通讯作者: M. Wachhold