卡宾
- 与 卡宾 相关的网络例句 [注:此内容来源于网络,仅供参考]
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A separatist group in Angola's oil-rich enclave of Cabinda killed three people attached to the Togolese football team, who were there to play in an African tournament.
盘踞在盛产石油的安哥拉卡宾达飞地的一个分裂组织袭击了正前往该地参加非洲国家杯的多哥足球队,致使三人死亡。
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The first football match to be played at the Angolan enclave of Cabinda as part of the African Cup of Nations tournament has passed off without incident three days after the Togolese team came under attack in the province.
多哥足球队在卡宾达遭遇袭击后三天,在安哥拉举行的第一场非洲杯足球赛平安无事地度过。
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The C30 carbyne trefoil knot studied is intertwined by the sp hybridized15 chain, which is topologically chiral and belongs to D 3 point-group of symmetry.
三叶结分子是最简单的非平凡纽结分子, C30卡宾三叶结分子是由一条闭合的15 sp杂化碳链组成的,是具有 D 3对称性的拓扑手性分子。
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The trefoil is known as the simplest nontrivial molecular knot. The C30 carbyne trefoil knot studied is intertwined by the sp hybridized15 chain, which is topologically chiral and belongs to D3 point-group of symmetry.
三叶结分子是最简单的非平凡纽结分子,C30卡宾三叶结分子是由一条闭合的l5 sp杂化碳链组成的,是具有D3对称性的拓扑手性分子。
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Density functional theory calculations have been carried on the molecular knot at the RB3LYP/6-31G levels. Based on the optimized geometry, the vibrational spectra, natural bond orbital and orbital energy level analysis for C30 carbyne trefoil knot have been calculated at the same level, and compared with the cyclo-C30 carbyne molecule.
本文用密度泛函方法[DFT/RB3LYP/6-31G]对分子结构和光谱性质进行了研究,在优化构型的基础上通过自然键轨道方法和轨道能级研究了它的共轭性、成键情况和稳定性,并与平面型C30卡宾环分子进行了比较。
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Via comprehensive computations, the possibilities of vinylidene and allene intermediates were excluded, and the reaction mechanism was found to contain the following three steps:(1) gold-catalyzed cyclization to give the cyclic intermediate,(2) the cyclic intermediate undergoing a 1,3-H migration to give a more stable intermediate, with the assistance of water-cluster,(3) finially, the 1,2-H or 1,2-silyl migration occuring for generation of the observed product.
通过对各种可能的反应路径的进行计算和比较,排除了亚甲基卡宾和连二烯中间体的可能性,并确定该异构化反应机理包含以下三个步骤:(1)炔丙基吡啶反应在金催化条件下发生分子内的成环得到环状中间体;(2)环状中间体在水分子簇的协助下优先发生1,3-氢迁移反应,异构化得到更为稳定的中间体;(3)最后再进行1,2-氢迁移或是1,2-硅烷基团迁移即得到实验中所观察到的环异构化产物。
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During the investigation of the reactivity of O_SCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2 and O_SCl_2(PPh_3)_2CH=C(PPh_3C(=CH_2)CH=CH2, several stable osmacycles with novel structure, such as osmabenzenes, osmafurans, osmacycles containing intramolecular-coordinated allene, intramolecular-coordination osmacycles containing osmacarbene, an osmacyclopentadiene, were isolated during the investigation of the reactivity of O_SCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2 and O_SCl_2(PPh_3)_2-CH=C(PPh_3C(=CH_2)CH=CH_2.In addition, some convenient and efficient methods to prepare these osmacycles were developed.
首先,合成出两种具有反应活性的金属杂五元环IC配合物OsCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2和OsCl_2(PPh_3)_2CH=C(PPh_3C(=CH_2)-CH=CH_2,并对它们进行了系统表征;进而,研究了这些活性五元配合物的反应性,合成出多种稳定的锇杂环配合物,其中包括锇苯、锇呋喃、含配位联烯的锇杂IC环化合化物、含锇卡宾的IC环化物、首例锇杂环戊二烯化合物等多元化的产物。
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Electron-withdrawing groups decrease the reactivity of benzylic C - H whileelectron-releasing groups enhance its reactivity. This is consistent with the well-knownelectron-demanding character of the Rh-carbene complex.
从相对速率的数值〓可以看到,吸电子基使苯甲位反应活性降低,给电子基使苯甲位反应活性增大,这和Rh-卡宾的亲电性一致。
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Stability of the ruthenium benzylidene complexes can be enhanced by introducing thechelating ligands.
通过螯合配位提高了钌卡宾配合物的稳定性。
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In this dissertation, synthesis of benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene]dichlororuthenium (41) has been improved.
本论文首先改进了钌卡宾配合物[1,3-二-(2,6-甲苯基)-4,5-二氢咪唑基]-苯亚甲基-三苯基膦-二氯合钌(41)的合成方法。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。