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首页> 外文期刊>Crystal growth & design >Modification of Network and Pore Dimensionality in Metal-Organic Frameworks Containing a Secondary Phosphine Functionality
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Modification of Network and Pore Dimensionality in Metal-Organic Frameworks Containing a Secondary Phosphine Functionality

机译：含有二次磷化氢功能的金属 - 有机框架网络和孔径的修改

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摘要

Three new metal-organic frameworks containing a triphenylphosphine moiety, namely, [Zn-3(tpp)(2)(DMP)(2)] nDMF (1), [Zn-3(tpp)(2)(4,4'-bpy)(2)].nDMF (2), and [Zn-3(tpp)(2)(3,31-bpy)].nDMF (3), were synthesized using 4,4',4"-phosphanetriyltribenzoic acid (H(3)tpp) as a tritopic linker. The absence or presence of additional N-donor linker molecules in the reaction mixture lead to the formation of (3,6)-c layered, (3,8)-c pillared layered, or (3,4,6)-c framer works. Compound' 1 is composed of a trinuclear zinc secondary building unit (SBU) and the tpp(3-) anion arranged in a layered (3,6)-c network with kgd topology. There are DMF guest molecules coordinated to the terminal Zn atoms of the trinuclear inorganic SBU. The addition of the neutral N-donor molecules 3,3'-bipyridine (3,3'-bpy) and 4,4'-bipyridine (4,4'-bpy) as second organic linker molecule lead to an increase of dimensionality.of the networks. Compound 2. is 'a (3,4,6),-nodal threedimensional MOP. Its structure consists of two equivalent-nterpenetrated nets with the point symbol (5(2).6(4))(5(2).6)2(5(4).6(6).7(2).8.9(2)) containing solvent filled pockets. The free electron pair of the phosphorus atom of the triphenylphosphine moiety is pointing toward the zero-dimensional pores. The structure of 3 can be described layers of 1 which are connected by 3,3'-bipyridine as contains a solvent filled three-dimensional pore system. All three materials exhibiOaptake of CO2 at 195. K after removal of the the point symbol (4(3))(2)(4(6).6(18).8(4)).pillar into a three-dimensional (3,8)-c. network with The non-interpenetrated structure of 3 guest DMF molecules. This is particularly surprising for 2, with its zero-dimenSional pores in the single-crystal structure and absence of N-2, adsorption at 77 K. Compound 3 shows alarge gate opening effect for CO2 adsorption at 195 K.
机译：含有三苯基膦部分的三种新的金属有机框架，即[Zn-3（TPP）（2）（DMP）（2））NdMF（1），[Zn-3（TPP）（2）（4,4' -BPY）（2）]。NDMF（2）和[Zn-3（TPP）（2）（3,31-BPY）]。NDMF（3）使用4,4'，4“ - 双膦四甲脲三苯甲酸酸（H（3）TPP）作为氚化接头。反应混合物中的额外N-供体连接分子的不存在或存在导致（3,6）-C层状，（3,8）-C柱的形成分层，或（3,4,6）-C成帧器工作。化合物'1由三核锌二次建筑单元（SBU）和布置在分层（3,6）-C网络中的TPP（3-）阴离子组成kgd拓扑。有DMF的客体分子与三核无机SBU的末端Zn原子配位。添加中性N-供体分子3,3'-硼吡啶（3,3'-BPY）和4,4'-作为第二有机接头分子的Bi吡啶（4,4'-Bpy）导致网络的维度增加。化合物2.是'A（3,4,6）， - 节点三维拖把。其结构由两个组成具有点符号（5（2）.6（4））（5（2）.6）2（5（4）.6（6）.7（2）.8.9（2））的等效 - 缠绕的网溶剂填充口袋。三苯基膦部分的磷原子的自由电子对指向零尺寸孔。可以将3层的结构描述为1的层，其通过3,3'-Bi yridine连接，如含有溶剂填充的三维孔系统。在去除点符号（4（3））（2）（4（6）时）。 3,8）-c。网络具有非互连结构的3位访客DMF分子。这对于2尤其令人惊讶的是，其单晶结构中的零尺寸孔隙，并且不存在N-2，在77k中吸附。化合物3显示了195 k的CO 2吸附的Alarge栅极开口效果。

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