OCH=CHR（R=H,BH2,CN,F,OH,NH2）自由基结构和稳定性的…

用ＵＨＦ／４－３１Ｇ基组，全构型优化ＯＣＨ＝ＣＨＲ（Ｒ＝Ｈ，ＢＨ２，ＣＮ，Ｆ，ＯＨ，ＮＨ２）６个氧自由基的构型并研究其稳定性化能△Ｅ，以ＯＣＨ＝ＣＨ２自由基为参考标准，它们的○Ｅ分别为０．００，－７５．９７，１．１１，０．７６，２２．０６和４０．６５ｋＪ／ｍｏｌ，说明供电子基团ＯＨ和ＮＨ２对氧自由基起稳定化作用，ＢＨ２对氧自由基起去稳定化作用，而ＣＮ和Ｆ对氧自由基的稳定性影响不大。     

NHCH=CHR自由基结构和稳定性ab initio研究

用ＵＨＦ／４－３１Ｇ基组，全构型优化，研究了ＮＨＣＨ＝ＣＨＲ（Ｒ＝Ｈ，ＢＨ２，ＣＮ，Ｆ，ＯＨ，ＮＨ２）６个氮自由基的构型和稳定化能△Ｅ，以ＮＨＣＨ＝ＣＨ２自由基为参考，它们的△Ｅ分别为０．００，－３４．９２，－８．３５，－０．９３，３３．０５，５０．８５ｋＪ．ｍｏｌ＾－１，说明供电子基团ＯＨ和ＮＨ２对氮自由基起稳定化作用，吸电子基团ＣＮ和ＢＨ２起去稳定化作用，而Ｆ对氮自由基的稳定性影响不大。     

含2，4－二硫代乙内酰脲分子片卡宾铁羰基簇合物的合成和结构

Ｆｅ_３（ＣＯ）_（１２）与５个２，４－二硫代乙内酰脲ＳＣＮＨＣ（Ｒ_１）（Ｒ_２）Ｃ（Ｓ）ＮＨ反应制得通式为Ｆｅ_３（ＣＯ）_８（ｕ３－Ｓ）_２（Ｌ）含卡宾配体的５个新铁羰基联合物（１～５），对其进行了元素分析、ＩＲ、~１ＨＮＭＲ和ＭＳ表征，并用Ｘ射线衍射法测定了簇合物３的晶体和分子结构，表明２，４－二硫代乙内酰脲分子片配位基：ＣＮＨＣ（ＣＨ_３）_２Ｃ（Ｓ）ＮＨ的卡宾碳具有ｓｐ~２成键特征，其Ｃ卡宾－Ｆｅ键长０．１８９８ｎｍ，３的分子几何构型维持母体物Ｆｅ_３（ＣＯ）_９（ｕ_３－Ｓ）_２的形状，其中卡宾取代了四方锥分子骨架基底平面Ｆｅ（１）Ｓ（１）Ｆｅ（３）Ｓ（２）的Ｆｅ（１）原子上轴向位置的一个端羰ＣＯ。     

THE SYNTHESIS AND CRYSTAL STRUCTURE COMPLEX OF SCHIFF BASE CONTAINING S·N－Cd_3｜CH_3O（O）C_6H_3CH＝NNHC（S）NH_2｜4·（CH_3COO_2·1／2［CH_3S（O）CH_3］·2H_2O

ＴＨＥＳＹＮＴＨＥＳＩＳＡＮＤＣＲＹＳＴＡＬＳＴＲＵＣＴＵＲＥＣＯＭＰＬＥＸＯＦＳＣＨＩＦＦＢＡＳＥＣＯＮＴＡＩＮＩＮＧＳ·Ｎ－Ｃｄ_３｜ＣＨ_３Ｏ（Ｏ）Ｃ_６Ｈ_３ＣＨ＝ＮＮＨＣ（Ｓ）ＮＨ_２｜４·（ＣＨ_３ＣＯＯ_２·１／２［ＣＨ_３Ｓ（Ｏ）ＣＨ_３］·?..     

［Cu_2（Gly－GlyO）_2（4，4＇－bpy）（OH）_2］·9H_2O

将Ｇｌｙ－ＧｌｙＯ、４，４＇－联吡啶与Ｃｕ（ＮＯ_３）_２·Ｈ_２Ｏ在二次水溶液中反应，合成出以４，４＇－ｂｐｙ为中继基、Ｃｌｙ－ＧｌｙＯ为螯环的新型双核铜配合物，经Ｘ射线单晶结构分析确定该配合物晶体的化学结构式为［（Ｈ_２ＮＣＨ_２ＣＯＮＨＣＨ_２ＣＯＯ）Ｃｕ（ＯＨ）（Ｃ_（１０）Ｈ_８Ｎ_２）Ｃｕ（ＯＮ）（Ｈ_２ＮＣＨ_２ＣＯＮＨＣＨ_２ＣＯＯ）］·９Ｈ_２Ｏ．晶体属Ｐ　空间群，晶胞参数ａ＝１．１４１２ｎｍ，ｂ＝１．２２９８ｎｍ，ｃ＝１．４２６９ｎｍ，α＝１１３．８２°，β＝１０１．９１°，γ＝１０３．６４°，Ｚ＝２．最终一致性因子Ｒ值为０．０６８，Ｒ_ｗ值为０．０５７，标准偏差σ＝０．１９５１。     

CH_3CONH_2－H_2C_2O_4二元系的DSC研究

ＣＨ_３ＣＯＮＨ_２－Ｈ_２Ｃ_２Ｏ_４二元系的ＤＳＣ研究黎厚斌，熊亚，胡起柱，屈松生（武汉测绘科技大学，武汉大学武汉４３００７０）关键词相图，ＤＳＣ，Ｘ－射线，Ｈ_２Ｃ_２Ｏ_４，ＣＨ_３ＣＯＮＨ_２前言Ｂｅｎ．Ｈ．Ｐｅｔｅｒｓｏｎ［１］早在１９３３年就研究...     

STUDIES ON THE SOLID STATE REACTIONS OF COORDINATION COMPOUNDS： LXIX STEPWISE REACTION OF CuCl_2．2H_2O WITH 2，2＇－BIPYRIDYL

ＳＴＵＤＩＥＳＯＮＴＨＥＳＯＬＩＤＳＴＡＴＥＲＥＡＣＴＩＯＮＳＯＦＣＯＯＲＤＩＮＡＴＩＯＮＣＯＭＰＯＵＮＤＳ：ＬＸＩＸＳＴＥＰＷＩＳＥＲＥＡＣＴＩＯＮＯＦＣｕＣｌ_２．２Ｈ_２ＯＷＩＴＨ２，２＇－ＢＩＰＹＲＩＤＹＬ￥ＬｉＸｕＬＥＩａｎｄＸｉｎＱｕａｎＸ...     

CO_2在Ag－Ba－Ca－K／α－Al_2O_3上的吸附及其在乙烯环氧化反应

应用ＦＴＩＲ和脉冲反应技术研究了ＣＯ_２和Ｏ_２在Ａｇ－Ｂａ－Ｃａ－Ｋ／α－Ａｌ２Ｏ３上的吸附及ＣＯ２对Ｃ２Ｈ４环氧化、完全氧化及环氧乙烷（ＥＯ）深度氧化反应的影响．研究结果表明，ＣＯ２和表面吸附氧在负载银催化剂表面存在竞争吸附，ＣＯ２对表面吸附氧有置换作用，该作用降低了银催化剂表面吸附氧的浓度，并且所形成的碳酸根物种改善了乙烯环氧化反应活住氧种的表面分布，对Ｃ_２Ｈ_４的环氧化反应有一定的抑制作用，但是对Ｃ２Ｈ４和ＥＯ的深度氧化反应的抑制作用更强，使得乙烯环氧化反应的选择性得到改善．     

THE PROMOTING EFFECT OF FLUORIDE TO OCM OCTALYST ZrO_2-BaF_2

ＴＨＥ　ＰＲＯＭＯＴＩＮＧ　ＥＦＦＥＣＴ　ＯＦ　ＦＬＵＯＲＩＤＥ　ＴＯ　ＯＣＭ　ＯＣＴＡＬＹＳＴ　ＺｒＯ_２－ＢａＦ_２ＴＨＥＰＲＯＭＯＴＩＮＧＥＦＦＥＣＴＯＦＦＬＵＯＲＩＤＥＴＯＯＣＭＯＣＴＡＬＹＳＴＺｒＯ_２－ＢａＦ_２￥ＺｉＳｈｅｎｇＣＨＡＯ；Ｘｉ...     

THE REACTION OF（μ_3－CPh）Co_3（CO）_9 WITH TRANSITION METAL CARBONYL ANION M（CO）_3（RCOCp）AND CHARACTERIZATION OF CLUSTERS（μ_3－CPh）CO_2M（CO）_8（RCOCPp）（M＝Mo，W；R＝H，CH_3．C_2H_5O）

ＴＨＥＲＥＡＣＴＩＯＮＯＦ（μ_３－ＣＰｈ）Ｃｏ_３（ＣＯ）_９ＷＩＴＨ　ＴＲＡＮＳＩＴＩＯＮＭＥＴＡＬＣＡＲＢＯＮＹＬＡＮＩＯＮＭ（ＣＯ）_３（ＲＣＯＣｐ）ＡＮＤＣＨＡＲＡＣＴＥＲＩＺＡＴＩＯＮＯＦＣＬＵＳＴＥＲＳ（μ_３－ＣＰｈ）ＣＯ_２Ｍ（ＣＯ）_８（ＲＣＯＣＰｐ）（Ｍ＝Ｍｏ，Ｗ；Ｒ＝Ｈ，ＣＨ_３．Ｃ_２Ｈ_５Ｏ）Ａｕｔｈｏｒｔｏｗｈｏｍｃｏｒｍｓｐｏｎｄｅｎｃｅｓｈｏｕｌｄａｄｄｒｅｓｓｅｄ．ＥｘｐｅｒｉｍｅｎｔａｌｓｅｃｔｉｏｎＧｅｎｅｒａｌｐｒｏｃｅｄｕｒｅａｎｄｍａｔｅｒｉａｌＡｌｌｏｐｅｒａｔｉｏｎｗａｓｃａｒｒｉｅｄｏｕｔｕｎｄｅｒｈｉｇｈｌｙｐｕｒｅｎｉｔｒｏｇｅｎａｔｍｏｓｐｈｅｒｅｕｓｉｎｇｓｈａｄａｒｄＳｃｈｌｅｎｌｃａｎｄｖａｃｕｕｍｔｅｃｈｎｉｑｕｅｓ．Ｈｅ－ｃａｎｅ，ｂｅｎｚｅｎｅａｎｄｔｅｔｒａｈｙｄｒｏｆｕｒａｎｗｅｒｅｐｒｅｄｒｉｅｄｏｖｅｒｓｏｄｉｕｍｗｉｒｅａｎｄｄｉｓｔｉｌｌｅｄｆｒｏｍｓｏｄｉｕｍ－ｂｅｎｚｏｐｈｅｎｏｎｅｕｎｄｅｒｎｉｔｒｏｇｅｎ．ＮａＭ（ＣＯ）３（ＲＣＯＣＰ）ａｎｄＰｈＣＣｏ３（ＣＯ），ｗｅｒｅｐｒｅｐａｒｅｄａｃｃｏｒｄｉｎｇｔｏｌｉｔｅｒａｔＵｒｅ     

取代基对氮自由基稳定性影响的ab initio研究

用UHF／4-31G基组，全构型优化，研究了九个氮自由基NHR（R＝CH3，CF3，CCl3，CN，NH2，CHO，OH，COOH，F）的构型和稳定化能ΔE，它们的ΔE分别为25．24，－38．53，－20．59，21．46，19．96，58．82，73．69，31．75，63．85kJ•mol-1，表明，除CF3，CCl3以外，其余七个取代基对氮自由基起稳定化作用．     

类硅烯H2C＝SiLiBr与RH (R＝F, OH, NH2)的插入反应

采用DFT B3LYP和QCISD方法研究了类硅烯H2C＝SiLiBr与RH (R＝F, OH, NH2)的插入反应. 在B3LYP/6- 311＋G(d,p)水平上优化了反应势能面上的驻点构型. 结果表明, H2C＝SiLiBr与HF, H2O或NH3发生插入反应的机理相同. QCISD/6-311＋＋G(d,p)//B3LYP/6-311＋G(d,p)计算的三个反应的势垒分别为148.62, 164.42和165.07 kJ•mol－1, 反应热分别为－69.63, －43.02和－28.27 kJ•mol－1. 相同条件下发生插入反应时, 反应活性都是H—F＞H—OH＞H—NH2.     

类锗烯H2C=GeLiCl与RH(R=F,OH, NH2)的插入反应

采用DFT B3LYP和QCISD方法研究了不饱和类锗烯H2C=GeLiCl与RH(R=F, OH, NH2)的插入反应. 在B3LYP/6-311+G(d,p)水平上优化了反应势能面上的驻点构型. 结果表明, H2C=GeLiCl与HF、H2O 或NH3发生插入反应的机理相同. QCISD/6-311++G(d,p)//B3LYP/6-311+G(d,p)计算的三个反应的势垒分别为173.53、194.48和209.05 kJ·mol-1, 反应热分别为60.18、72.93和75.34 kJ·mol-1. 相同条件下发生插入反应时, 反应活性顺序都是H—F>H—OH>H—NH2.     

Definitive ab initio studies of model SN2 reactions CH(3)X+F- (X=F,Cl, CN,OH, SH,NH(2), PH(2))

The energetics of the stationary points of the gas-phase reactions CH(3)X+F(-)-->CH(3)F+X(-) (X=F, Cl, CN, OH, SH, NH(2) and PH(2)) have been definitively computed using focal point analyses. These analyses entailed extrapolation to the one-particle limit for the Hartree-Fock and MP2 energies using basis sets of up to aug-cc-pV5Z quality, inclusion of higher-order electron correlation [CCSD and CCSD(T)] with basis sets of aug-cc-pVTZ quality, and addition of auxiliary terms for core correlation and scalar relativistic effects. The final net activation barriers for the forward reactions are: E (b/F,F)=-0.8, E (b/F, Cl)=-12.2, E (b/F,OH)=+13.6, E b/F,OH=+16.1, E b/F,SH=+2.8, Eb/F, NH=+32.8, and E b/F,PH =+19.7 kcal x mol(-1). For the reverse reactions E b/F,F= -0.8, Eb/Cl,F =+18.3, E b/CN,F=+12.2, E b/OH,F =-1.8, E b/SH,F =+13.2, E b/NH(2),=-1.5, and E b/PH(2) =+9.6 kcal x mol(-1). The change in energetics between the CCSD(T)/aug-cc-pVTZ reference prediction and the final extrapolated focal point value is generally 0.5-1.0 kcal mol(-1). The inclusion of a tight d function in the basis sets for second-row atoms, that is, utilizing the aug-cc-pV(X+d)Z series, appears to change the relative energies by only 0.2 kcal x mol(-1). Additionally, several decomposition schemes have been utilized to partition the ion-molecule complexation energies, namely the Morokuma-Kitaura (MK), reduced variational space (RVS), and symmetry adapted perturbation theory (SAPT) techniques. The reactant complexes fall into two groups, mostly electrostatic complexes (FCH(3).F(-) and ClCH(3).F(-)), and those with substantial covalent character (NCCH(3).F(-), CH(3)OH.F(-), CH(3)SH.F(-), CH(3)NH(2).F(-) and CH(3)PH(2).F(-)). All of the product complexes are of the form FCH(3).X(-) and are primarily electrostatic.     

Synthesis and Crystal Structure of a Novel Bimetallic Porphyrin Complex Salt {[MnTPP(CH_3OH)_2]_3Fe(CN)_6}·13H_2O

A novel bimetallic porphyrin complex salt, {[MnTPP(CH3OH)2]3Fe(CN)6}13H2O (TPP = tetraphenylporphyrin), has been synthesized and structurally characterized by X-ray diffraction analysis. The crystal is of trigonal, space group R-3 with a = b = 31.0618(10), c = 11.8366(8) A, Z = 3, V = 9890.3(8) A3, C144H134FeMn3N18O19, Mr = 2641.36, Dc = 1.330 g/cm3, μ(MoΚα) = 0.463 mm-1, F(000) = 4131, R = 0.0525 and wR = 0.1382 for 3045 observed reflections (I > 2σ(I)). The title complex is composed of one [Fe(CN)6]3- anion, three [MnTPP(CH3OH)2]+ cations and thirteen water molecules, which are connected by multiform hydrogen bonds leading to a 3D supramolecular network structure.     

取代基对氮和氧自由基稳定性影响的理论研究

用MNDO方法，全构型优化，研究了15个氮自由基4-RC6H4NH，和15个氧自由基4-RC6H4O（R＝－H；－OCH3，－Cl，－F，－CN，－COCH3，－NO2，－CH3，－CF3，－SCH3，－C6H5，－Nh2，－BH2，－PH2，－SiH3）的稳定化能．结果表明：－NH2，－CH3，－OCH3，－F基团对自由基起稳定化作用，－CF3，－NO2；－CN，－COCH3，－BH2基团对自由基起去稳定化作用．苯基对氧自由基有较大的稳定化作用，而对氮自由基的稳定性影响较小．－SCH3，－PH2，－SiH3，－Cl基团表现弱的去稳定化作用．计算和实验结果基本相符．     

Delta(DeltaS) and Delta(DeltaS) for the competing bond cleavage reactions in (CH3CN)(ROH)H+ [R = CH3, C2H5, C3H7, (CH3)2CH

Microcanonical variational transition-state theory was used to determine the entropies of activation for hydrogen-bond cleavage reactions leading to CH(3)CN + ROH(2)(+) in a series of acetonitrile-alcohol proton-bound pairs (CH(3)CN)(ROH)H(+) (where R = CH(3), CH(3)CH(2), CH(3)CH(2)CH(2), and (CH(3))(2)CH). In each case, the dissociation potential surface was modelled at the MP2/6-31 + G(d) level of theory. The dissociating configurations having the minimum sums-of-states were identified in each case and the resulting entropies of activation were calculated. Combined with previous work on the competing reaction leading to CH(3)CNH(+) + ROH, the results permitted the determination of the Delta(DeltaS) in each proton-bound pair. For the (CH(3)CN)(CH(3)OH)H(+) and (CH(3)CN)(CH(3)CH(2)OH)H(+) proton-bound pairs, the entropies of activation for the two dissociating channels are essentially the same [i.e., Delta(DeltaS) = 0], while Delta(DeltaS) for the propanol-containing pairs ranged between 40 and 45 J K(-1) mol(-1). The latter non-zero values are due to a combination of the location of the dividing surface in each dissociation and the rapidity with the frequencies of the vanishing vibrational modes go to zero as they are converted to product translations and rotations during the dissociation.     

H_2O与NO,CN,OH自由基及负离子相互作用的CP研究

采用量子化学从头算方法在均衡（CounterPolse）校正和非校正势能面上研究 了珑O与NO，NO~-，CN，CNoH~-之间的相互作用比较了CP-梯度优化和非校正梯度优 化以及基组的选择对超分子结构和能量的影响．研究311++g**基组对于这些体系的 研究有很高的效率．这些自由基和负离子均能与H_2O形成强弱不同的氢强弱次序依 次为OH~-，CN，NO~_，OH，CN，NO，由相互作用能．△E~(CP)，成键临界点电荷密 E（2）分析均得到同样结果CF梯度优化和非校正梯度优化所得能量及正BSSE相差不 大。     

CRYSTAL STRUCTURE OF Ce(ClO_4)_3 COMPLEX WITH 3,3-R,R''''-16-C-5(R=CH_3;R''''=CH_3O(CH_2)_2OCH~-_2)

<正> The title compound C18H37O20NCeCl3, Mr = 834. 25, orthorhom-bic, P212121, a = 11.836(4), b = 13.899(6), c= 19. 401(6) A ; V=3192(2)A3; Z = 4; Dc=1. 74gcm-3, F (000) = 1684,μ= 17. 8cm-1 (MoKa). The final R = 0. 080, Rw = 0. 081. The Ce(Ⅲ) ion is coordinated to one O atom of one C1O4- ion, a CH3CN molecule, a water molecule and seven O atoms from a crown ether molecule. The other two C1O4- ions are not coordinated to the metal. The bond lengths of Ce-N(CH3CN), Ce -O(ClO4-), Ce -O(H2O) and Ce-O(crown) are 2. 61,2. 82,2. 53, and 2. 56A, respectively.