羰基的

Bipyridyl and 1,10-phenanthroline (L3), Cl3SnCH2CH2COORo L (L= L1, a; L2, b; L3, c), formed by low-heating solid-state reaction. The crystal structures of 1 and 2 show that the tin atom adopts a distorted trigonal bipyramid geometry via intramolecular carbonyl oxygen to tin coordination [the distances of Sn-0 bond are 0.2351(6) ran for 1 and 0.2362(3) nm for 2]. Compound 1 belongs to monoclinic with space group P2/c, a = 0.9842(2) nm, b =1. 0923(8) nm, c = 1.23948(11) nm,/?= 93.894(15)°, V= 1.3294(4) ran3, Mr = 366.23, 7 = 4. Compound2 belongs to monoclinic with space group P2{/c, a = 1.04443(9) nm, b = 1.04823(7) nm, c = 1.28113(9) nm,/= 90. 953(8)°, V= 1.40239(19) nm3, Mr = 380.25, Z = 4

利用元素分析、红外光谱、核磁共振对其结构进行了表征，并通过X射线单晶衍射测定了1和2的晶体结构，二者均为具有分子内羰基氧原子配位的畸变三角双锥结构。1属于单斜品系，空间群P21/c， a=0.9842(2)nm，b=1.0923(8)nm，c=1.23948(11)nm，β=93.894(15)°，V=1.3294(4) nm^3，Mr=366.23，Z=4.2属于单斜晶系，空间群P21/c，a=1.04443(9)nm，b=1.04823 (7)nm，c=1.28113(9)nm，β=90.953(8)°，V=1.40239(19)nm^3，Mr=380.25，Z=4。

It bas been discovered that the carboxylic ester rare earth salt is superior to the organotin in antidehydrochlorination, and inferior to the organotin in antioxidation through following the tracks of carboxide group and conjugated double bond with the help of infrared spectroscopy and ultraviolet-visible spectroscopy.

借助于红外光谱和紫外／可见光谱，通过跟踪光老化过程中羰基基团和共轭双键的变化，发现羧酸酯稀土的抗脱HCl能力优于有机锡，但抗氧化能力不如有机锡。

A simple and efficient method for the synthesis of N3-functionalized 3,4-dihydropyrimidinones by aza-Michael addition reactions of 3,4-dihydropyrimidinones toα,β-ethylenic compounds catalyzed by KF/Al_2O_3 is described.

研究结果表明：DHPMs类化合物可与α，β-不饱和羰基化合物发生Michael加成反应，产物只有N3位功能化的DHPMs，而没有N1位的产物。

Study on different methods of iodomethane s preparation;2. The carbonyl group of DMC is formed by CO_2 insertion, and the two methyl groups of DMC are from methanol and iodomethane , respectively.

结果表明，固体碱碳酸钾催化剂直接参与了DMC的合成过程，DMC分子中的羰基由CO2插入甲醇后形成，两个甲基分别来源于甲醇和碘甲烷。

Starting from 4-androstenedione, three novel 3-oxo-4-aza-5-androstene-17-oxime derivatives 7, 8 and 9 were synthesized through oxidation ring cleavage, amination ring closure, oximation,and substitution .

以4雄烯二酮为起始原料，经过氧化开环、氨解闭环、肟化、取代等4-步反应，合成了3个新的3-羰基-4-氮杂-5-雄甾烯-17肟衍生物7、8和9，并用质谱、1HNMR、13CNMR等测试手段对目标化合物的结构进行了表征

The results of asymmetric reduction of latent chiral ketones by carbonyl reductase showed that the enzyme had a high specificity for pentanone in aliphatic ketones and for the acetophenone derivates that contained a withdrawing group at α-position.

利用羰基还原酶不对称催化还原潜手性酮类化合物发现，对于芳香酮类化合物，酶对α位为强电负性基团的底物专一性较强；对于脂肪酮类化合物，酶对五碳脂肪酮的专性较高。

Refreshing agent contained 0.25% chitosan, 1% sodium lactate, 1% lactic acid and 250 mgkg^(-1) Nisin and MAP were used to determine microbial flora counts, psychrophilic bacteria counts, TBARS, carbonyl content and a* value of chilled meat to evaluate the effect of refreshing agent and MAP on chilled meat.

将复合保鲜剂（0.25%壳聚糖＋1%乳酸钠＋1%乳酸＋250mgkg^(-1) Nisin）与气调包装共同使用，测定冷却肉的细菌总数、嗜冷菌数、TBARS值（硫代巴比妥酸值，Thiobarbituric Acid-reacitive Substances）、羰基含量以及红度值，来综合评价保鲜剂与气调包装复合后对冷却肉的影响。

When theresin concentration exceed 10%,three types of recovery swelling experiment indicate that thetransverse compressive deformation was almost 100% fixed.The X-ray and FTIR spectra ofcompressive wood treated by PF show that the width of crystalline region and crystallinitywas hardly changed comparing with untreated wood;Esterified carbonyl degree at 1736cm-1and the end carbon degree of semicellulose at 897cm-1 increased.

当树脂浓度超过10％时，三种循环膨胀实验证明，木材横纹压缩变形几乎100％被固定。X-射线衍射谱图和FTIR光谱表明，PF预聚物处理后的压密材同素材相比，结晶区的宽度和结晶度几乎没发生改变；1736cm-1处酯化羰基峰强度增加，897cm-1处半纤维素异头碳(C1)峰强度增加。

We anticipate the demand of formaldehyde will up to 2,930,000 tons, and 1,320,000 tons of methanol will be consumed;② At present, the acetic acid mainly produced by food zymotechnics or ethane in our country, along with the development of synthesizing acetic acid process with methanol, the demand of methanol will increase rapidly.

预计2010年甲醛需求量将达到293万吨，届时消费甲醇达132万吨；②目前我国醋酸生产多采用粮食发酵法或乙烯法，随着甲醇羰基合成醋酸工艺的发展，对甲醇的需求将迅速增加。

However, under the experimental conditions used for these tests, carbonyl compounds may be generated by decomposition of unstable intermediates, such as hydroperoxides, thus detracting from accuracy of the results.

然而在这些试验的试验条件下，羰基化合物会由于不稳定中间体的分解产生，如氢过氧化物，因此结果会偏离准确值。

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。

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。