carBa carCcarsDa cars 相关知识点: 试题来源: 解析 B 根据It's可知,所选项在句中做表语。is决定了表语应为名词的单数形式。car前应用不定冠词a。在表示一个××,可数名词的单数前需加上不定冠词a或an。不定冠词+可数名词的单数形式。cars为可数名词car的复数形式。不定冠词后面只能够跟可数名词的单数形...
Carbaboranylnickel Complexes with the Novel η5-2,3,5-Tricarbahexaboranyl LigandMultilayer sandwich complexes containing the novel ligands 1b and 1c have been obtained by unusual boranediyl transfer and stacking reactions. Reaction of Ni(allyl)2 with 2b leads to formation of trace amounts of...
Carbaboranylnickel Complexes with the Novel η5‐2,3,5‐Tricarbahexaboranyl LigandMultilayer sandwich complexes containing the novel ligands 1b and 1c have been obtained by unusual boranediyl transfer and stacking reactions. Reaction of Ni(allyl)2 with 2b leads to formation of trace amounts ...
Semicarbazone und Thiosemicarbazone, 12. Mitt.: Die Kristallstruktur des Salicylaldehyd-Semicarbazonsstructure (organic substancesThe crystal and molecular structure of salicylaldehyde semicarbazone was obtained by single crystal X-ray diffraction. The O atom of the semicarbazone fragment is anti...
MonocarbaboraneRod-like moleculesCarbaborane C-functionalisationReaction of the [1-(4-H2N–C6H4)-closo-1-CB9H9]− anion 1 with Me2CHCH2CH2ONO and dilute HCl gives neutral [1-(4-N2–C6H4)-closo-1-CB9H9] 3, which reacts with PhNH2 to form the 19.5 Å [1-{4-(4-H2N–C6H4...
The invention relates to novel O- or S-(2-mercaptoalkyl)mono- or dihydrocarbyl carbamothioates and S-(2-mercaptoalkyl)mono- or dihydrocarbyl carbamodithioate. The novel compounds of this invention are useful as collectors in the froth flotation of sulfide mineral ores....
The invention relates to novel O- or S-(2-mercaptoalkyl)mono- or dihydrocarbyl carbamothioates and S-(2-mercaptoalkyl)mono- or dihydrocarbyl carbamodithioate. The novel compounds of this invention are useful as collectors in the froth flotation of sulfide mineral ores....
A process for the production of thiosemicarcarbazones AMINOALCOHILADAS in the sulfur atom, and salts thereofThiosemicarbazones aminoalkiladas method of producing the sulfur atom of the formula ** (See formula) ** wherein R1 is an aliphatic or aromatic or heterocyclic group which may be ...
preparation of 2 - alkyl - semicarbazoni and 2 - alkyl - carbalcossi - idrazoni.BOSCHI PIER MARINOGOZZO FRANCO
PESTICIDALLY ACTIVE SEMI-CARBAZONES AND THIOSEMICARBAZONES DERIVATIVESCompounds of formula (I), wherein the substituents are as defined in claim 1, and agrochemically acceptable salts and enantiomers thereof, can be used as insecticides.Jeanguenat, Andre...