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It is noted that the energy of MLCT excited state can be systematically tuned simply by introducing ancillary acetylide ligand.

其中以脂肪炔为辅助配体的络合物tt6～tt7发光量子产率高达0.30以上，发光寿命长达12μs，这是迄今为止，文献报道室温溶液中发光寿命最长、量子产率最高的三联吡啶Pt络合物。

The results are following:(1)We investigated the influence of the positional isomeric effect on structures.Due to the less space-crowding,it is easier for 3-pytpy to behave as bridging ligand than 2-pytpy under the same reaction conditions,while,it is easier for 2-pytpy to function as tridentate chelating ligand to construct supramolecular structures.

研究结果如下：(1)研究了两个吡啶取代三联吡啶配体的位置异构效应对配合物结构的影响。3-pytpy配体比2-pytpy具有更小的空间位阻，在相同的合成条件下容易以单-三齿桥联方式配位；而2-pytpy更易以三齿螯合形式配位，通过π…π堆积作用形成超分子结构。

In order to investigate the relationship between the open-chain ligands and metal ions, and the possibility of the metal complexes used as electroluminescent materials, a new naphthol schiff base ligand which is a open-chain crown and its four transition metal complexes, a new amide type tripodal ligand containing heterocyclic ring, two tripodal ligands (H〓L〓 and H〓L〓) containing phenol schiff bases and their rare earth complexes were synthesized and characterized.

为了进一步研究和探讨开链配体与金属离子的配位作用，以及金属配合物作为电致发光材料的可能性，我们设计合成了含萘酚环的Schiff碱开链冠醚H〓L〓及四种过渡金属(Zn、Ni、Co、Cu)配合物，两个含酚羟基的Schiff碱三足配体H〓L〓和H〓L〓及稀土配合物，一个含杂环的酰胺型三足配体L〓，培养了配体L〓的单晶，确定了其晶体结构。

The body consist of opisthosoma and ligand, there exist four pairs of legs at the ventral side of the ligand, which are tubbiness and are in a gemmule-type.

雄螨的阳茎位于足体背面的第2对足之间，雌螨的生殖孔在腹面第4对足之间。

Based on the crystal complex structure of ligand and receptor proteins, we have developed several strategies for grafting the binding site of the native ligand protein to unhomologous scaffold proteins.

把蛋白-蛋白相互作用区嫁接到另外一个非同源的骨架蛋白上，有助于了解蛋白质结构和功能之间的关系，并且在医学上具有潜在的价值。

Its photoluminescent mechanism has been studied with molecular orbital calculations, showing that the photoluminescent properties are both π〓→π〓 transition of the uncoordinated phen molecules and metal-to-ligand charge transfer , admixed with the cyanide-to-ligand charge transfer of the molecules.

通过分子轨道计算研究了配合物的光致发光机理，显示它的荧光性质既有未配位的phen分子的π〓→π〓跃迁，又有分子的金属到配体的电荷转移跃迁同时混合了部分的氰根到配体的电荷转移跃迁。

The structural characteristics of the ligand of the chiral Schiff base are that the ligand has phenol hydroxyl, alcoholic hydroxyl and an imine group, one to three bromine atoms are provided on the framework of double benzene nucleus, and chiral carbon is connected with the nitrogen atom of imine.

手性西佛碱配体的结构特征为含有酚羟基、醇羟基和亚胺基团，在萘环骨架上带有一至三个溴原子，手性碳与亚胺的氮原子相连。

The first magnetic study was performed on the multi-nuclear complex with carbamyldicyanomethanide as bridging ligand, and the coupling capacity of carbamyldicyanomethanide anion as bridging ligand was obtained.

本研究工作对于新型分子体铁磁材料的设计和合成，以及探索了解金属蛋白中金属离子的生物功能等方面具有一定的理论和实验指导意义。

A novel ligand, N, N'-bis (2-hydroxy-1-naphthylidene)-3-oxa-1, 5-diaminopentane , and its Zn , Ni , Co , Cu complex were synthesized. The compositions and structures of the ligand and its complexes were characterized by elemental analyses, MS , IR spectra, DTA-TG and molar conductivity.

合成了含萘酚环Schiff碱开链冠醚配体H〓L〓（N，N'-双-二甘醇二胺）及其过渡金属(Zn、Ni、Co、Cu)配合物，通过元素分析、质谱、红外光谱、摩尔电导对配体及配合物的组成、结构进行了详细的表征，对配体和配合物的溶液和固体荧光性质进行了研究。

Complexes 7-12, 16, 22 and 23 are dimeric molybdatesor dimeric tungstates, the central metal with citrate or malate in a molar ratio of 1:1. Theanions of these complexes have two metal atoms and two ligands. Each ligand acts as atridentate fashion via theirα-alkoxy,α-carboxy andβ-carboxy groups coordinated to eachmetal atom. Complex 13 is a monomeric molybdate. The citrate ligand coordinates tomolybdenum with itsα-alkoxy,α-carboxy andβ-carboxy groups in a tridentate mode.

其配阴离子中都含有2个金属原子和2个配体，且配体均以α-烷氧基、α-羧基和β-羧基氧与中心金属三齿配位。13是单核柠檬酸钼配合物，柠檬酸也以α-烷氧基、α-羧基和β-羧基氧与钼三齿配位。17和21分别为苹果酸钼、柠檬酸钨单核配合物，其中苹果酸、柠檬酸配体均以α-烷氧基氧和α-羧基氧与金属双齿配位。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了