The reaction of 4,11-dihydro-5,7,12,14-tetramethyldibenzo[b,i][1,4,8,11]tetraazacyclotetradecine (tetraaza- [14]annulene, H2tmtaa, 1) and germanium tetrachloride generated dichlorotetraaza[14]annulene germanium(IV) complex (2).
<正>4,11-二氢-5,7,12,14-四甲基二苯并[b,i][1,4,8,11]四氮杂环四轮烯(简称四氮杂[14]环轮烯,H2tmtaa)配体(1)与四氯化锗反应生成二氯四氮杂[14]环轮烯锗(IV)配合物(2)。
In this paper the stereoscopic structure of annulene compounds are disscused.
本文讨论了轮烯类化合物的立体结构,从螺旋理论看,芳香轮烯和非芳香轮烯都是内消旋体和外消旋体的混合物,故都不呈现旋光性,但轮烯的衍生物,由于受碳架结构的限制,难以外消旋化,因此呈现旋光性,轮烯类化合物的旋光性也遵循右螺旋右旋,左螺旋左旋的螺旋规律。
This paper reviews the recent progress in the studies on the aromaticity as well as thegeneral synthetic method of annulenes.
本文综述了近年来轮烯的合成及芳香性的研究进展,介绍了各种轮烯的一般合成方法。
Synthesis and Characterization of Eu() Ternary Complexes withTetramethyldibenzotetraaza14annulene and diketone
铕(Ⅲ)-β-二酮-四甲基四氮〔14〕轮烯三元配合物的合成与表征
Syntheses and Properties of 1, 6-Methano[10]Annulene Derivatives;
1，6-亚甲基架桥[10]轮烯衍生物的合成及性质的研究
Synthesis and Characterization of Some Transition Metal Complexes of 1,5,9,13-Tetraaza Mecrocyclic Annulene;
四苯并-1,5,9,13-四氮[16]轮烯过渡金属配合物的合成及表征
Synthesis and Properties of 1, 6-methano[10]annulene-3, 4-dicarboxylic Anhydride and Its Derivatives
1，6-亚甲基桥[10]轮烯-3，4-二甲酸酐及其衍生物的合成与性质的研究
Solvent-free Synthesis of Novel N-amino-substituted 1,6-Methanoannulene-3,4-dicarboximide
新型N-氨基取代的1,6-亚甲基桥[10]轮烯-3,4-二甲酰亚胺的无溶剂合成
Synthesis of a new γ-lactone based on 1,6-methano[10] annulene
一种基于1,6-亚甲基桥[10]轮烯骨架的新型γ-内酯的合成
1. Synthesis of Macrocyclic Monoaza Crown Ethers and Its Cross-Linked Polyrotaxane 2. Free Radical Copolymerization of Vinyl Macrocyclic Monoaza Crown Ether with Styrene;
大环氮杂冠醚及其交联聚轮烷的合成和其乙烯型单体与苯乙烯的自由基共聚合反应的研究
textile fabric, impregnated, coated, covered or laminated with polyvinyl chloride (excl tyre cord fabric)
纺织物,用聚氯乙烯浸渍、涂层、包覆或压层（不包括轮胎帘子布）
The Development of 1,2-Polybutadiene Rubber and Its Application to Pneumatic Tyre Tread
1,2-聚丁二烯橡胶的开发及其在轮胎胎面上的应用
Application of PTFE to the Insulation System of Large Hydrogenerators
聚四氟乙烯材料在大型水轮发电机绝缘系统中的应用
AS for the packing of the cup emery wheel, packed with the vinyl outside the box of one by one.
至于杯形砂轮的包装，请逐个在盒子外面用聚乙烯塑料膜将杯形砂轮包装好。
ratchet wheel
棘轮, 制轮, 闸轮
olefin-modified styrene-acrylonitrile
烯烃改性苯乙烯-丙烯腈
acrylonitrile-Butadiene-stryrene (ABS)
丙烯?丁二烯苯乙烯
burnishing of gear teeth
(齿轮的) 轮齿研磨
The hub of a wheel.
（轮）毂轮子的中心
acrylonitrile-vinyl chloride fibre
丙烯腈－氯乙烯纤维
vinyl acetate-ethylene copolymer emulsion
乙酸乙烯-乙烯共聚乳液