Structural and magnetic study of N2, NO, NO2, and SO2 adsorbed within a flexible single-crystal adsorbent of [Rh2(bza)4(pyz)]n.

Structural and magnetic study of N2, NO, NO2, and SO2 adsorbed within a flexible single-crystal adsorbent of [Rh2(bza)4(pyz)]n.
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[Rh2(bza)4(pyz)]n 柔性单晶吸附剂中吸附的 N2、NO、NO2 和 SO2 的结构和磁性研究。

DOI:
10.1002/asia.200600317
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发表时间:
2007
期刊:
Chemistry, an Asian journal
影响因子:
--
通讯作者:
S. Takamizawa
S. Takamizawa
中科院分区:
--
文献类型:
--
作者:
C. Kachi‐Terajima;T. Akatsuka;Masa;S. Takamizawa

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晶体一维化合物[Rh(II)2(Bza)4(PYZ)]n(1)(BZA=苯甲酸盐,PYZ=吡嗪)对N_2、NO、NO2和SO2具有气体吸附作用。这些气体包裹体的晶体结构由单晶X-射线单晶衍射学表征为:在强制吸附条件下为1×1.5N_2(298K)、1×2.5N_2(90K)和1 x 1.95NO(90K),在常压下为1×2NO2(90K)和1×3SO2(90K)。在氮气、NO和SO2条件下,观察到与气体吸附相关的P1空间群的晶相转变。在无相变的NO2条件下观察到C2/c空间群。所有被吸附的气体都被主体晶格稳定。在90K下的N_2、NO和SO_2包裹体晶体中,范德华接触内的邻近客体分子之间存在较短的原子间距离。吸附的NO分子生成了反式-NO缔合二聚体,分子间接触较短,但没有传统的化学键。NO包裹体晶体的磁化率表明了NO分子之间的反铁磁性相互作用和NO单体产生的顺磁性。NO2包裹体的晶体结构表明,气体分子以二聚体N2O4的形式吸附在晶体中。
The crystalline one-dimensional compound, [Rh(II)2(bza)4(pyz)]n (1) (bza = benzoate, pyz = pyrazine) demonstrates gas adsorbency for N2, NO, NO2, and SO2. These gas-inclusion crystal structures were characterized by single-crystal X-ray crystallography as 1 x 1.5 N2 (298 K), 1 x 2.5 N2 (90 K), and 1 x 1.95 NO (90 K) under forcible adsorption conditions and 1 x 2 NO2 (90 K) and 1 x 3 SO2 (90 K) under ambient pressure. Crystal-phase transition to the P1 space group that correlates with gas adsorption was observed under N2, NO, and SO2 conditions. The C2/c space group was observed under NO2 conditions without phase transition. All adsorbed gases were stabilized by the host lattice. In the N2, NO, and SO2 inclusion crystals at 90 K, short interatomic distances within van der Waals contacts were found among the neighboring guest molecules along the channel. The adsorbed NO molecules generated the trans-NO...NO associated dimer with short intermolecular contacts but without the conventional chemical bond. The magnetic susceptibility of the NO inclusion crystal indicated antiferromagnetic interaction between the NO molecules and paramagnetism arising from the NO monomer. The NO2 inclusion crystal structure revealed that the gas molecules were adsorbed in the crystal in dimeric form, N2O4.
DOI: 10.1021/ic048351s
发表时间: 2005-01
影响因子: 4.6
作者:
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通讯作者: S. Takamizawa;T. Saito;T. Akatsuka;Ei-ichi Nakata
DOI: --
发表时间: 2005
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发表时间: 2006-05-24
影响因子: 15
作者:
Kawano, Masaki;Kobayashi, Yasuhiro;Fujita, Makoto
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可转化的一维配位聚合物主体[Rh(O2CPh)4(pyz)]n的二氧化碳包合物相。
DOI: --
发表时间: 2003
期刊: Angewante Cheimie 42
影响因子: --
作者:
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