Hydrothermal assembly and crystal structures of three novel open frameworks based on molybdenum(VI) oxides
Hydrothermal assembly and crystal structures of three novel open frameworks based on molybdenum(VI) oxides
复制标题
三种基于钼（VI）氧化物的新型开放框架的水热组装和晶体结构
DOI：
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
N. Goh
中科院分区：
文献类型：
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作者：
Yan Xu;Jianjiang Lu;N. Goh
三种新型三维骨架氧化钼(VI)杂化材料[MoO]的水热合成、晶体结构和热行为
3.
(PYZ)
0.5
]1(PYZ=吡嗪)，[{Cu(Pip)
0.5
}嘟嘟声
4.
)2和[H]
2.
莫
2.
CU
3.
O
10
]3，提出了一种新的分类方法。1和2是无机氧化层和桥联有机二胺配体的杂交物，表现出共价/配位骨架连接性。3代表了一个新的基于Mo的双金属氧化物的开放框架的例子
六、
和铜
第二部分：
。这些新材料是通过明智地选择有机二胺并同时改变初始反应条件来合成的。研究发现，有机二胺的选择对固体结构的骨架组成和结构至关重要。1的手性骨架和2的三维结构分别由六个{MoO}包围的沿正交和三斜b轴的一维通道表征
5.
N}八面体和1中的两个PYZ分子，以及两个{MoO
4.
}四面体，四个{CuO
4.
N}个正方形金字塔和2个PiP分子。3的三维开放骨架沿三斜b轴有六个环状通道。这三种固体的热行为相似，在1和2中去除有机配体，在3中脱水后，在260-420 °C范围内经历相变。
The hydrothermal syntheses, crystal structures and thermal behaviours of three new 3-D framework molybdenum(VI) oxide hybrid materials, [MoO
3
(pyz)
0.5
] 1 (pyz=pyrazine), [{Cu(pip)
0.5
}MoO
4
] (pip=piperazine) 2 and [H
2
Mo
2
Cu
3
O
10
] 3, are presented. 1 and 2 that are hybrids of inorganic oxide layers and bridging organodiamine ligands exhibit a covalent/coordination framework connectivity. 3 represents a novel open framework example of bimetallic oxides based on Mo
VI
and Cu
II
. These new materials are synthesized by a judicious selection of organodiamines accompanied by the concurrent alteration of initial reaction conditions. The choice of organodiamines is found to be critical to the framework composition and construction of solid architectures. The chiral framework of 1 and the 3-D structure of 2 are characterised by one-dimensional channels along the orthorhombic and triclinic b axis respectively circumscribed by six {MoO
5
N} octahedra and two pyz molecules in 1, and by two {MoO
4
} tetrahedra, four {CuO
4
N} square pyramids and two pip molecules in 2. The 3-D open framework of 3 has six-ring channels along the triclinic b axis. The thermal behaviours of the three solids are similar, undergoing a phase transition in the range 260-420 °C upon the removal of organic ligands in 1 and 2 and dehydration in 3.