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Crystal structural analysis reveals that, because water molecules bond to Cu atoms, the dhbd ligand can only adopt a hydroxyl oxygen atom to bridge two reversed U-shaped subunits into a novel centrosymmetric dual-U-shaped tetranuclear Cu structure. Each U-shaped frame consists of two crystallographically distinct Cu atoms, two dpphen ligands and one coordinated water molecule.

晶体结构分析表明，由于水的配位阻断， 2，3-二羟基丁二酸根仅通过单羟基氧桥联两个U形双核亚单元形成具有一个对称中心的双U形四核结构，其中U型亚单元包含晶体学上不对称的2个Cu原子、1个2，3-二羟基丁二酸根、2个4，7-二苯基-1，10-邻菲咯啉和1个配位H2O分子。

This study focused on characteristics related to the reproductive biology of Cyathea podophylla Copel. gametophytes, including growth habits, sexual expression, antheridiogen, ploidy, and genetic load.

本文著重於与鬼桫椤配子体繁殖有关之各种特性的研究，如生长习性，配子器发生顺序，促精素，倍体性，及遗传负荷等。

Dendrocalamus sinicus ; reproductive organs ; megasporogenesis ; microsporogenesis ; male gametophyte ; female gametophyte

巨龙竹；生殖器官；大孢子发生；小孢子发生；雄配子体；雌配子体

In low basicity, because of the low melting of the slag phase, it is bad for the gas-solid reaction of ferric iron oxide and separating iron from slag The research discovered: Sulfur can be deprived above 90% during direct reduction. The mechanic of desulphurization is gasification desulphur.

研究发现，在直接还原过程中可以脱除90%以上的硫，脱硫主要机理是气化脱硫，内配煤团块中的硫化物和有机硫进入气相，一部分随炉气脱离团块，一部分被配入的CaO吸收。

The metalorganic complex NaEu4 is prepared by europium and Dibenzoyl Methane. The coordination polymers Eu-DBM-PAA and NaEu-DBM-PSAA are synthesized by the reaction of NaEu4 with polyacrylic acid M(subscript r=5000and copolymer of acrylic acid and styrene M(subscript r=3000.

研究了铕和二苯甲醯甲烷形成的有机配体NaEu4与聚丙烯酸M(下标 r=5000）、聚M(下标 r=3000发生配位反应分别得到配合物Eu-DBM-PAA和NaEu-DBM-PSAA，得率分别为89.7%和87.3%。

This is the first example of two-dimensional lanthanide MOFs with one dimensional water chains.2、Coordination polymer[Nd_2_3(H_2O)_2]·bpy·4H_2O(2)(bpdc=2, 2′-bipyridine-3,3′-dicarboxylate,bpy=4,4′-bipyridine)had been synthesized under hydrothermal conditions and its structures were determined by X-ray diffraction,and confirmed by IR and TG analysis.

该结构是在二维骨架的镧系配位聚合物中首次观察到的一维的水链结构。2、以Nd_2O_3，2，2′-联吡啶-3，3′-二羧酸和4，4′-联吡啶为原料，采用水热法合成了一个具有二维骨架结构的配位聚合物[Nd_2_3(H_2O)_2]bpy·4H_2O，通过IR、x射线单晶衍射分析和热重等手段对其结构进行了表征。

Two inorganic-organic hybrid materials,〓(C〓H〓O〓=isophthalate or terephthalate), have been assembled for the first time from the new type metal center Zn〓 and benzene dicarboxylate links.

首次以新型金属中心Zn〓分别和间苯二甲酸、对苯二甲酸配体合成了2个配位聚合物无机-有机杂化材料。

In the structures of these complexes, zinc can act as the vertex of the networks in various styles: single atom; dicarboxylate, tricarboxylate or tetracarboxylate bridged binuclear SBU ; and octacarboxylate bridged trinuclear SBU.

在这些配合物的结构中，锌离子可以按多种形式作为网络结构的顶点：单原子，双羧基、三羧基或四羧基桥连的双核锌次级结构单元，八羧基桥连的三核锌次级结构单元，再与配体组装成不同的配位聚合物网络。

Two inorganic-organic hybrid materials, [Zn_8(SiO_4)(C_8H_4O_4)_6]_n (C_8H_4O+4 = isophthalate or terephthalate), have been assembled for the first time from the new type metal center Zn_8(Si0_4) and benzene dicarboxylate links.

首次以新型金属中心Zn_8(SiO_4)分别和间苯二甲酸、对苯二甲酸配体合成了2个配位聚合物无机-有机杂化材料。

ABSTRACT In this paper, by employing dicarboxylic acids with special conformation, i.

利用几个结构上有特点的二元羧酸，即2，6-吡啶二甲酸、三个异构体苯二甲酸，顺丁烯二酸和4，4'-联苯甲酸作为首要桥基配体，并结合使用含氮中性配。。。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。