Four phthalonitrile derivatives containing chalcogen bonds,i.
合成了四种含氧族元素过渡链(醚键及硫醚键)的邻苯二甲腈衍生物,红外光谱(FT-IR)和核磁共振氢谱(1H-NMR)证实了它们的结构。
Synthesis and Molecular Structures of Novel Hydrotris (3,5-dimethyl-1-pyrazolyl)borate Molybdenum Complexes Containing 1,2-Dicarba-closo-dodecaborane-1,2-dichalcogenolato Ligands;
新型的含硫族元素碳硼烷配体的三(3,5-二甲基-1-吡唑)硼氢钼配合物的合成和分子结构(英文)
Some α,β unsaturated ester or carbonyl phenylsulfones have been synthesized by condensation of the methyl β phenylsulfonyl acetate,ethyl β phenylsulfonyl acetate,β phenylsulfonyl acetophenone and β phenylsulfonyl acetone with aldehydes in the presence of aryltelluoxides as catalyst.
芳香族有机碲氧化物有效地催化β-苯砜基乙酸甲酯、乙酯、苯乙酮及丙酮与醛的 Knoevenagel反应 ,合成α,β-不饱和酯基或羰基苯砜化合物 ,并有较好的产率 ,同时探讨了影响该反应的主要因素。
Property of Phthalonitrile Derivatives Containing Bonds of Chalcogens
含氧族元素过渡链的邻苯二甲腈衍生物的性能
actinide chalcogenide
锕系元素硫族元素化合物
The water is formed from oxygen element and hydrogen element.
水由氧元素和氢元素组成。
Water is composed of the elements hydrogen and oxygen.
水是由氢元素和氧元素组成的.
Water is a compound containing the elements hydrogen and oxygen.
水是含有氢元素和氧元素的化合物。
Hydrogen and oxygen are what make up water.(=Hydrogen and oxygen are the things which make up water.)
氢和氧是构成水的元素。
Both hydrogen and oxygen are elements.
氢和氧都是化学元素。
Oxygen combines with many of the other elements to form oxides.
氧和许多其它元素化合成氧化物。
Oxide: Compound produced when an element has chemical action with oxygen.
氧化物:元素与氧作用而产生的化合物。
Burning implies the combustion of other elements with oxygen to form compounds.
氧化意味着别的元素与氧形成化合物。
When an element is caused to combine with oxygen it is oxidized.
某种元素同氧气化合就叫做氧化。
any of the chemically inert gaseous elements of the helium group (group 8A or 0 of the periodic table).
元素周期表中氦族（A族或族）中任何在化学上具有惰性的气体元素。
A binary compound of an element or a radical with oxygen.
氧化物一种元素的二元化合物或氧原子团
Hydrogen and oxygen are elements, but water, which is formed when they combine, is not.
氢和氧是元素，但两者化合而成的水不是元素。
Teaching of Periodic Table of Elements;
主族元素族序数的快速推断法——元素周期律周期表教学一则
Layered Growth Model for Alloys of Groups Ⅲ-Ⅴ and Ⅳ
Ⅲ-Ⅴ族和Ⅳ族元素合金的层生长模型的研究
A group of elements with similar chemical properties.
同族具有相近的属性的一组元素
A column in the periodic table of the elements.
属，族元素周期表上的一栏