The speed of the coordinating reaction between pyridine and Co is higher than that between pyridine and Fe.

吡啶與Co結(jié)合的速率比Fe結(jié)合的速率快农村熟女乱子a。

Pyridine and pyridine production base is also a feed additive main raw material for nicotinic acid.

吡啶和吡啶生產(chǎn)基地九色草免费电影，也是主要的飼料添加劑煙酸原料久久久久久黃色網站。

At high pyridine concentration, the swelling ratio increased with the pyridine concentration.

在高吡啶濃度時国产淑女色视频，溶脹率隨吸附量的增大而增加国产一级a片精品久久。

These ligands can be roughly divided into two groups: those in which the camphor is annulated in the 2,3-positions to the -face of the pyridine ring and those in which the pyridine is contained as a pendent on the C2 or C3 of the camphor framework.

這些配大體可以分為兩類：這其中是空心的樟腦2，3-陣地到對面的吡啶環(huán)與那些其中吡啶載于作為懸吊的樟腦的C2或C3的架構(gòu)15级黄片电影。

10-arylmethylene anthrone pyridine compounds and the raw materials for the reaction conditions, join in alkaline, phase transfer catalysts and acceleration response, KI synthesis of containing pyridine 10,10 - dialkyl anthraquinone.

以蒽酮和含吡啶基的化合物為反應(yīng)原料欧美日韩另类自拍动漫，在堿性條件，加入相轉(zhuǎn)移催化劑和KI加速反應(yīng)的進行国产精品日韩欧美在线第3页天美，來合成含吡啶基的10在线中文字幕亚洲日韩精品，10-二烷基蒽酮。

It isconfirmed by ~1H NMR,~(13)C NMR and X-ray crystallographic analysis that complexes 60-63are monopyridine complexes and show distorted square pyramid geometries; complexes 64and 65 are bispyridine complexes and show pseudo-octahedral geometries, where twopyridine ligands are in cis arrangement and trans to the NHC and the benzylidene ligandrespectively, the bond length between ruthenium and pyridine ligand trans to the benzylideneligand is 16 pm longer than the bond length between ruthenium and pyridine ligand trans tothe NHC ligand.

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Benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene]dichloro(2-methylpyridine)ruthenium (62), benzylidene[1,3-bis(2,6-dimethylphenyl)-4,5-dihydroimidazol-2-ylidene] dichloro(2,4-dimethylpyridine)ruthen ium (63) introduce ortho substituted pyridine as dissociating ligand to weaken Ru-N bondand accelerate dissociation of pyridine derivative ligand through steric hindrance.

在釕卡賓配合物[1欧美-黄色工厂，3-二-(2国产偷窥熟女精品视频大全小说，6-二甲苯基)-4，5-二氫咪唑基]-苯亞甲基-(2-甲基吡啶)-二氯合釕(62)久久久久久亚洲日韩精品一区区三区，1亚洲激情小说，3-二-(2，6-二甲苯基)-4欧美精品视频专区在线，5-二氫咪唑基1-苯亞甲基-(2久久综合男人，4-二甲基吡啶)-二氯合釕(63)中鲁一鲁在线观看精品视频，鄰位取代的吡啶作為解離配體，通過鄰位基團的空間效應(yīng)削弱釕-氮配位鍵日本三级网，使配體更易解離无码又黄又湿又免费视频下载，提高了催化劑的初活性。

Several types of ligand reactions observed under hydrothermal condition were summed up:(1) hydrolysis of pyridine nitrile, aldehyde and ester in mixed water and alcohol into pyridine-carboxylate;(2) replacement of carboxylate group with sulfonic group;(3) coupling of phenanthroline by dehydrogen;(4) oxidative coupling of methanol into oxalic acid;(5) hydroxylation of isophthalate.

總結(jié)了以往在水熱條件下觀察到的幾類配體反應(yīng)：（1）吡啶腈欧美成人版中文字幕、醛和酯在醇和水混合溶液中水解成吡啶羧酸99精品热视频只有精品16；（2）磺基取代羧基反應(yīng)；（3）鄰菲啰啉的脫氫的聚合：（4）甲醇被氧化偶合生成草酸：（5）間苯二甲酸的羥基化反應(yīng)手机在线a视频。

WO3, an interlayer compound prepared by J. W. Johnson (1981) using yellow tungstic oxide hydrate. Suspension of white powdery tungstic acid in anhydrous pyridine yields on standing for 2 wk whiteHW4O13.3H2O. IR and DTA studies revealed the connection between that pyridine polytungstate and white powdery tungstic acid (microcryst.), whose composition may thereby be assigned as H2W4O13.nH2O.

WO3久久性AV。粉狀白鎢酸在無水吡啶中放置兩周后可得到另一種化學(xué)式為(C5H5NH)HW4O13.3H2O的吡啶化合物，經(jīng)IR和DTA研究可初步說明該化合物與粉狀白鎢酸之間的聯(lián)系国产真人一级做a片，并因此推測白鎢酸的組成可能為H2W4O13.nH2O午夜精品在线。

The reactions of pyridine-2-carbaldehyde semicarbazone with transition metal Ni(II,Cosalts afford two pyridine-2-carbaldehyde semicarbazone transition metal compounds.

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