含硫杂核原子簇CpWFeCo(CO)_8(μ_3-S)和(CpW)_2Fe(CO)_7(μ_3-S)的合成及结构研究

本文利用过渡金属的亲硫性，通过Ｃｐ＊－Ｗ（ＣＯ）３Ｃｌ（Ｃｐ＊＝Ｃ５Ｈ５，Ｃ５Ｈ４ＣＨ３）与ＨＦｅ２Ｃｏ（ＣＯ）９（μ３－Ｓ）反应，得到四种含硫异核金属羰基原子簇化合物Ｃｐ＊ＷＦｅＣｏ（ＣＯ）８（μ３－Ｓ）（Ｃｐ＊＝Ｃ５Ｈ５，Ⅰ－ａ；Ｃｐ＊＝Ｃ５Ｈ４ＣＨ３，Ⅱ－ａ），（Ｃｐ＊Ｗ）２Ｆｅ（ＣＯ）７（μ３－Ｓ）（Ｃｐ＊＝Ｃ５Ｈ５，Ⅰ－ｂ；Ｃｐ＊＝Ｃ５Ｈ４ＣＨ３，Ⅱ－ｂ）。对合成的簇合物进行了ＩＲ，１Ｈ／１３Ｃ－ＮＭＲ，Ｃ／Ｈ及金属分析，并对Ⅰ－ａ进行了Ｘ－射线单晶结构分析。     

1—酰氧基—2,8,9—三氧杂—5—氮杂—1—锗杂三环〔3,3,3,O^1,5〕十？…

１－氮代杂氮锗三环与羧酸钾盐反应生成１－酰氧基杂氮锗三环化合物。通过ＩＲ，＾１ＨＮＭＲ和质谱确定了它们的结构，测定了化合物ＳＣＨ＝ＣＨＣＨＣ－ＣＯＯＧｅ（ＯＣＨ２ＣＨ２）３Ｎ的晶体结构，化合物为五配位，Ｎ→Ｇｅ键长为０．２１２ｎｍ。     

Magnetic Properties of Heteropoly Complexes α-Na_mH_n[GaW_9M_3(H_2O)_3O_(37)]·16H_2O (M=Co(Ⅱ),Mn(Ⅱ),Cr(Ⅲ))

ＭａｇｎｅｔｉｃＰｒｏｐｅｒｔｉｅｓｏｆＨｅｔｅｒｏｐｏｌｙＣｏｍｐｌｅｘｅｓα┐ＮａｍＨｎ［ＧａＷ９Ｍ３（Ｈ２Ｏ）３Ｏ３７］·１６Ｈ２Ｏ（Ｍ＝Ｃｏ（Ⅱ）,Ｍｎ（Ⅱ）,Ｃｒ（Ⅲ））＊ＷＡＮＧＬｉ＊＊,ＬＩＵＺｏｎｇ－ｒｕｉ＊＊,ＺＨＯＵＹｕｎ－ｓｈａ...     

（四甲基二硅撑）双（3—三甲硅基环戊二烯基）—四羰基二铁…

标题化合物（Ｍｅ２ＳｉＳｉＭｅ２）〔η＾５－（３－Ｍｅ３ＳｉＣ５Ｈ３）Ｆｅ（ＣＯ）２〕２／（μ－ＣＯ）２（Ａ）分子中的Ｆｅ－Ｆｅ键被钠汞齐还原断裂，生成相应的双铁负离子，分别与ＭｅＣＯＣｌ、ＰｈＣＯＣｌ、ＰｈＣＨ２Ｃｌ、ＣｌＣＨ２ＣＯＯＣ２Ｈ５和Ｐｈ３ＳｎＣｌ进行亲核取代反应，生成在铁原子上引入相应取代基的产物（Ｍｅ２ＳｉＳｉＭｅ２）〔η＾５－（３－Ｍｅ３ＳｉＣ５Ｈ３）Ｆｅ（ＣＯ）２Ｒ〕２（Ｒ：Ｍ     

有机锗倍半氧化物的快原子轰击质谱分析

在不同的水解条件下，合成羧乙基锗倍半氧化物（Ｇｅ－１３２）和乙氧羰基乙基锗倍半氧化物。采用快原子轰击质谱（ＦＡＢＭＳ）技术分别对３种化合物进行分析，证明有机锗化合物是以聚合物的形式存在，分子结构通式为｛［ＧｅＣＨ２ＣＨ２ＣＯＯＨ］２Ｏ３｝ｎ，聚合系数ｎ分别为１、２和３。     

（四甲基二硅撑）双（3－三甲硅基环戊二烯基）－四羰基二铁的反应性

标题化合物（Ｍｅ_２ＳｉＳｉＭｅ_２）［η￣５－（３－Ｍｅ_３ＳｉＣ_５Ｈ_３）Ｆｅ（ＣＯ）_２］_２／（μ－ＣＯ）_２（Ａ）分子中的Ｆｅ－Ｆｅ键被钠汞齐还原断裂，生成相应的双铁负离子，分别与ＭｅＣＯＣｌ、ＰｈＣＯＣｌ、ＰｈＣＨ_２Ｃｌ、ＣｌＣＨ_２ＣＯＯＣ_２Ｈ_５和Ｐｈ_３ＳｎＣｌ进行亲核取代反应，生成在铁原子上引入相应取代基的产物（Ｍｅ_２ＳｉＳｉＭｅ_２）［η￣５－（３－Ｍｅ_３ＳｉＣ_５Ｈ_３）Ｆｅ（ＣＯ）_２Ｒ］_２（Ｒ：ＭｅＣＯ（１），ＰｈＣＯ（２），ＰｈＣＨ_２（３），ＣＨ_２ＣＯＯＣ_２Ｈ_５（４），Ｐｈ_３Ｓｎ（５），Ｉ（６））。Ａ在氯仿中与碘反应，得到Ｆｅ－Ｆｅ断裂的双铁碘化物，但在苯中与过量碘反应，则得到Ｆｅ－Ｉ－Ｆｅ桥联的离子型化合物（Ｍｅ_２ＳｉＳｉＭｅ_２）［η￣５－（３－Ｍｅ_３ＳｉＣ_５Ｈ_３）Ｆｅ（ＣＯ）_２］_２Ｉ·Ｉ（７）。化合物６的晶体和分子结构经Ｘ射线衍射测定，６属单斜晶系，Ｐ２１／ｃ空间群，ａ＝１．７２１７（４）ｎｍ，ｂ＝０．７７５３（２）ｎｍ，Ｃ＝１．３６２９（７）ｎｍ，β＝１０３．８０（３）°，Ｖ＝１．７６７（２）ｎｍ３，Ｚ＝４，Ｄｃ＝１．６２９９·ｃｍ－１，最终偏差因子Ｒ＝０．０５４。     

A NOVEL REACTION BETWEEN Ge－Ge AND Fe－Fe BONDS IN COMPLEX （Me_2GeGeMe_2）［（η~5－C_5H_4）Fe（CO）］_2（μ－CO）_2 AND CRYSTAL STRUCTURE OF THE PRODUCT

ＡＮＯＶＥＬＲＥＡＣＴＩＯＮＢＥＴＷＥＥＮＧｅ－ＧｅＡＮＤＦｅ－ＦｅＢＯＮＤＳＩＮＣＯＭＰＬＥＸ（Ｍｅ_２ＧｅＧｅＭｅ_２）［（η~５－Ｃ_５Ｈ_４）Ｆｅ（ＣＯ）］_２（μ－ＣＯ）_２ＡＮＤＣＲＹＳＴＡＬＳＴＲＵＣＴＵＲＥＯＦＴＨＥＰＲＯＤＵＣＴ￥ＸｉｕＴ?..     

金属键有机化合物的研究──非对称型η~5－取代环戊二烯基三羰基钼（钨）金属单键化合物的合成及表征

通过η５－Ｒ~１Ｃ＿５Ｈ＿４（ＣＯ）＿３ＭＮａ与η~５－Ｒ~２Ｃ＿５Ｈ＿４（ＣＯ）＿３ＭＮａ（Ｍ＝Ｍｏ，Ｗ）以及η~５－Ｒ~１Ｃ＿５Ｈ＿４（ＣＯ）＿３ＭｏＮａ与η~５－Ｒ~２Ｃ＿５Ｈ＿４（ＣＯ）＿３ＷＮａ在Ｆｅ＿２（ＳＯ＿４）＿３醋酸水溶液作用下的交叉氧化偶联反应，合成了７个新的非对称型金属单键化合物η~５－Ｒ~１Ｃ＿５Ｈ＿４（ＣＯ）－３Ｍｏ─Ｍｏ（ＣＯ）＿３Ｃ＿５Ｈ＿４Ｒ~２－η~５（Ｒ~１，Ｒ~２：Ｃ（Ｏ）Ｍｅ，ＣＯ２Ｅｔ），η５－Ｒ１Ｃ５Ｎ４（ＣＯ）３Ｗ─Ｗ（ＣＯ）３Ｃ５Ｈ４Ｒ２－η５（Ｒ１，Ｒ２：Ｃ（Ｏ）Ｍｅ，ＣＯ２Ｅｔ；Ｈ，ＣＯ２Ｅｔ）和η５－Ｒ１Ｃ５Ｈ４（ＣＯ）３Ｍｏ─Ｗ（ＣＯ）３Ｃ５Ｈ４Ｒ２－η５（Ｒ１，Ｒ２：Ｃ（Ｏ）Ｍｅ，Ｈ；Ｅｔ，Ｃ（Ｏ）Ｍｅ；Ｃ（Ｏ）Ｍｅ，ｎ－Ｂｕ；ＣＯ２Ｍｅ，ｎ－Ｂｕ）．用Ｃ／Ｎ分析、ＩＲ、１ＨＮＭＲ和ＭＳ表征了它们的结构，并对该氧化偶联反应的特点进行了讨论．     

Preparation and Crystal Structures of LaCl_3（12－crown－4）（MeOH）and［LaCl_3（phen）_2（H_2O）］·MeOH

Ｐｒｅｐａｒａｔｉｏｎ　ａｎｄ　Ｃｒｙｓｔａｌ　Ｓｔｒｕｃｔｕｒｅｓ　ｏｆ　ＬａＣｌ_３（１２－ｃｒｏｗｎ－４）（ＭｅＯＨ）ａｎｄ［ＬａＣｌ_３（ｐｈｅｎ）_２（Ｈ_２Ｏ）］·ＭｅＯＨＭａｏＪｉａｎｇ－Ｇａｏ（ＦｕｊｉａｎＩｎｓｔｉｔｕｔｅｏｆＲｅｓｅａ...     

（四甲基二硅撑）二（3－三甲硅基环戊二烯基）四羰基二铁及其相关化合物的合成及结构

１，２－二（三甲硅基环戊二烯基）四甲基二硅烷与Ｆｅ（ＣＯ）_５在二甲苯中于１０５～１１０℃反应除分离到少量标题化合物（Ｍｅ_２ＳｉＳｉＭｅ_２）［η－（３－Ｍｅ_３ＳｉＣ_５Ｈ_３Ｆｅ（ＣＯ）］_２（μ－ＣＯ）_２（５）外，主要是生成了脱Ｍｅ_３Ｓｉ基的产物（Ｍｅ_２ＳｉＳｉＭｅ_２）［η－Ｃ_５Ｈ_４Ｆｅ（ＣＯ）］_２（μ－ＣＯ）_２（１）及１的热重排异构体［Ｍｅ_２ＳｉＣ５Ｈ４－Ｆｅ（ＣＯ）_２］_２（２）．将５的二甲苯溶液加热回流１８ｈ，则转化为其异构体［Ｍｅ_２Ｓｉ（Ｍｅ_３ＳｉＣ_５Ｈ_３）Ｆｅ（ＣＯ）_２］_２（６）．脱硅基发生在由相应反应物制备５的过程中。且脱硅基是与反应物中（Ｍｅ_２ＳｉＳｉＭｅ_２）桥的存在有关．５的晶体结构经Ｘ射线衍射测定属单斜晶系，Ｐ２_１／ｍ空间群，晶体学数据：ａ＝０．６７８０（１）ｎｍ，ｂ＝２．２３０３（９）ｎｍ，ｃ＝０．９９８８（１）ｎｎ，；β＝９８．９６（１）°，Ｖ＝１．４９６０ｎｍ~３．Ｚ＝２，Ｄ_ｃ＝１．３６ｇ／ｃｍ~３．     

Crystal Structure of 3-methyl-1, 2, 3, 4, 4a, 4b, 9a, 15, 15a,15b-decahydro-(4,5);(4a,15)-dimethano-tricyclo(4, 3, 1, 0~(2,7)) deca 〔8, 9, 1, 10-a,b, c〕pyrido〔4,3-a〕-acridin-6-en-9-ol-8-one

1INTRODUCTIONIntheO-demethyIationof7a-o-amino-phenyl-6,14-endo-ethenotetrahydrothe-baine,catalyzedbyhydrobromicacid,ifinhightemperatureandprolongedtime,anewcomPoundwithyie1dof17.9%wasfound,whosestructurecannotbedeferredfromthepreviousacid-catalyzedrearrangementof6,14-endo-ethnotetrahydrothe-baines(1-33.ItwascrystallizedfromanhydrousethanolsolutionanditsstructurewasdeterminedbyX-raycrystallography.2EXPERmENTALAcrystalwithdimensionsofO.3mmXO.4mmXO.5mmwasmountedonanEnraf-NoniusCAD4d…     

Studies on Selena-Macrocyclic Amides Synthesis and Structural Characterization of 7-Phenyl-5, 9-dioxo-1-selena-4, 7, 10-triazacyclododecane and 6-(4-Nitrobenzyl )-5, 9-dioxo-1, 4, 7, 10-selenatriazacyclododecane

lmTR0DUCTI0NSincetheseleniumcoronandswereachivevedin1989tli,thesynthesisandcoor-dinationchemistrystudyofthismacrocycliccomPOundshavereceivedwideattentionowingtotheirstrongcomplexingabilitiestowardssoft.transiti0nandheavymetals.InourprevibuspaPer,wereP0rtedthecrystalstructureoftw0selenacrownethers(2'3)andaPd(1)complexwith10'selenabenzo-15-crown-5t4i.Duetothedifficultyofthepreparationsofselenium-nitr0genmixeddonorc0n-..tainingmacrocycles,thestudyontheseligandsisconsiderablyscarce.Thesynthes…     

1—甲基杂氮硅三环的晶体结构和杂氮硅三环类化合物中硅氮间键的本质的量子化学研究

精确测定了1—甲基杂氮硅三环的X光晶体结构,并用量子化学SCC—DV—X_a法对杂氮硅三环类化合物RSi(OCH_2CH_2)_3N(R=CH_3,F,Cl,Br,I)中硅氮成键本质进行了研究。计算结果证明硅氮间形成的配键中除σ键外还存在微弱的π键,硅原子的3d轨道在成键中起一定的作用。 晶体学参数:C_7H_(15)NO_3Si,M_r=189.3,单斜晶系,空间群P2_1/n,a=7.606(1),b=12.150(1),c=9.779(1),β=91.64(1)°,V=903.4,Z=4,D_c=1.392gcm~(-3),F(000)=408,μ(MoK_a)=2.208cm~(-1)。1510个可观察衍射参与最小二乘修正,最终偏离因子R=0.044。     

Determination of the rate constants for the NH2(X2B1) + NH2(X2B1) and NH2(X2B1) + H Recombination reactions with collision partners CH4, C2H6, CO2, CF4, and SF6 at low pressures and 296 K. Part 2

The recombination rate constants for the reactions NH2(X2B1) + NH2(X2B1) + M → N2H4 + M and NH2(X2B1) + H + M → NH3 + M, where M was CH4, C2H6, CO2, CF4, or SF6, were measured in the same experiment over presseure ranges of 1-20 and 7-20 Torr, respectively, at 296 ± 2 K. The NH2 radical was produced by the 193 nm laser photolysis of NH3. Both NH2 and NH3 were monitored simultaneously following the photolysis laser pulse. High-resolution time-resolved absorption spectroscopy was used to monitor the temporal dependence of both species: NH2 on the (1)2(21) ← (1)3(31) rotational transition of the (0,7,0)A2A1 ← (0,0,0)X2B1 electronic transition near 675 nm and NH3 in the IR on either of the inversion doublets of the qQ3(3) rotational transition of the ν1 fundamental near 2999 nm. The NH2 self-recombination clearly exhibited falloff behavior for the third-body collision partners used in this work. The pressure dependences of the NH2 self-recombination rate constants were fit using Troe’s parametrization scheme, k(inf), k(0), and F(cent), with k(inf) = 7.9 × 10(-11) cm3 molecule(-1) s(-1), the theoretical value calculated by Klippenstein et al. (J. Phys. Chem. A113, 113, 10241). The individual Troe parameters were CH4, k(0)(CH4) = 9.4 × 10(-29) and F(cent)(CH4) = 0.61; C2H6, k(0)(C2H6) = 1.5 × 10(-28) and F(cent)(C2H6) = 0.80; CO2, k(0)(CO2) = 8.6 × 10(-29) and F(cent)(CO2) = 0.66; CF4, k(0)(CF4) = 1.1 × 10(-28) and F(cent)(CF4) = 0.55; and SF6, k(0)(SF6) = 1.9 × 10(-28) and F(cent)(SF6) = 0.52, where the units of k0 are cm6 molecule(-2) s(-1). The NH2 + H + M reaction rate constant was assumed to be in the three-body pressure regime, and the association rate constants were CH4, (6.0 ± 1.8) × 10(-30); C2H6, (1.1 ± 0.41) × 10(-29); CO2, (6.5 ± 1.8) × 10(-30); CF4, (8.3 ± 1.7) × 10(-30); and SF6, (1.4 ± 0.30) × 10(-29), with units cm6 molecule(-1) s,(-1) and the systematic and experimental errors are given at the 2σ confidence level.     

Determination of the rate constant for the NH2(X2B1) + NH2(X2B1) recombination reaction with collision partners He, Ne, Ar, and N2 at low pressures and 296 K. Part 1

The recombination rate constant for the NH(2)(X(2)B(1)) + NH(2)(X(2)B(1)) → N(2)H(4)(X(1)A(1)) reaction in He, Ne, Ar, and N(2) was measured over the pressure range 1-20 Torr at a temperature of 296 K. The NH(2) radical was produced by 193 nm laser photolysis of NH(3) dilute in the third-body gas. The production of NH(2) and the loss of NH(3) were monitored by high-resolution continuous-wave absorption spectroscopy: NH(2) on the (1)2(21) ← (1)3(31) rotational transition of the (0,7,0)A(2)A(1) ← (0,0,0) X(2)B(1) vibronic band and NH(3) on either inversion doublet of the (q)Q(3)(3) rotational transition of the ν(1) fundamental. Both species were detected simultaneously following the photolysis laser pulse. The broader Doppler width of the NH(2) spectral transition allowed temporal concentration measurements to be extended up to 20 Torr before pressure broadening effects became significant. Fall-off behavior was identified and the bimolecular rate constants for each collision partner were fit to a simple Troe form defined by the parameters, k(0), k(inf), and F(cent). This work is the first part of a two part series in which part 2 will discuss the measurements with more efficient energy transfer collision partners CH(4), C(2)H(6), CO(2), CF(4), and SF(6). The pressure range was too limited to extract any new information on k(inf), and k(inf) was taken from the theoretical calculations of Klippenstein et al. (J. Phys. Chem A 2009, 113, 10241) as k(inf) = 7.9 × 10(-11) cm(3) molecule(-1) s(-1) at 296 K. The individual Troe parameters were: He, k(0) = 2.8 × 10(-29) and F(cent) = 0.47; Ne, k(0) = 2.7 × 10(-29) and F(cent) = 0.34; Ar, k(0) = 4.4 × 10(-29) and F(cent) = 0.41; N(2), k(0) = 5.7 × 10(-29) and F(cent) = 0.61, with units cm(6) molecule(-2) s(-1) for k(0). In the case of N(2) as the third body, it was possible to measure the recombination rate constant for the NH(2) + H reaction near 20 Torr total pressure. The pure three-body recombination rate constant was (2.3 ± 0.55) × 10(-30) cm(6) molecule(-2) s(-1), where the uncertainty is the total experimental uncertainty including systematic errors at the 2σ level of confidence.     

Synthesis and Crystal Structure of a Complex Bimetallic Salt [Ni(trans_[14]diene)] [Ni (mnt)_2]

1INTRoDUCTIONMacrocycliccoordinationcomPOundshavebeenwidelyinvestigatedinthepastdecadesbecauseoftheirrelationshiptocomplexesofbiologicalsignificancesuchasthePorphyrinsandcorrins(lJ.Structuresofmanymacrocycliccompoundshavebeenre-ported,especiallythecompoundscontainingN4macrocyclicligands"'.However,toourknowledge,onlyafewcrystalstructuresofcomplexbimetallicsaltscontainingmacrocyclicligandshavebeendeterminedbyX-raydiffractionmethod.Inthispa-per,werePortthesynthesisandstructureofthetit1ecom…     

A kinetic study of the reactions of Ca+ ions with O3, O2, N2, CO2 and H2O

The reactions between Ca(+)(4(2)S(1/2)) and O(3), O(2), N(2), CO(2) and H(2)O were studied using two techniques: the pulsed laser photo-dissociation at 193 nm of an organo-calcium vapour, followed by time-resolved laser-induced fluorescence spectroscopy of Ca(+) at 393.37 nm (Ca(+)(4(2)P(3/2)-4(2)S(1/2))); and the pulsed laser ablation at 532 nm of a calcite target in a fast flow tube, followed by mass spectrometric detection of Ca(+). The rate coefficient for the reaction with O(3) is essentially independent of temperature, k(189-312 K) = (3.9 +/- 1.2) x 10(-10) cm(3) molecule(-1) s(-1), and is about 35% of the Langevin capture frequency. One reason for this is that there is a lack of correlation between the reactant and product potential energy surfaces for near coplanar collisions. The recombination reactions of Ca(+) with O(2), CO(2) and H(2)O were found to be in the fall-off region over the experimental pressure range (1-80 Torr). The data were fitted by RRKM theory combined with quantum calculations on CaO(2)(+), Ca(+).CO(2) and Ca(+).H(2)O, yielding the following results with He as third body when extrapolated from 10(-3)-10(3) Torr and a temperature range of 100-1500 K. For Ca(+) + O(2): log(10)(k(rec,0)/cm(6) molecule(-2) s(-1)) = -26.16 - 1.113log(10)T- 0.056log(10)(2)T, k(rec,infinity) = 1.4 x 10(-10) cm(3) molecule(-1) s(-1), F(c) = 0.56. For Ca(+) + CO(2): log(10)(k(rec,0)/ cm(6) molecule(-2) s(-1)) = -27.94 + 2.204log(10)T- 1.124log(10)(2)T, k(rec,infinity) = 3.5 x 10(-11) cm(3) molecule(-1) s(-1), F(c) = 0.60. For Ca(+) + H(2)O: log(10)(k(rec,0)/ cm(6) molecule(-2) s(-1)) = -23.88 - 1.823log(10)T- 0.063log(10)(2)T, k(rec,infinity) = 7.3 x 10(-11)exp(830 J mol(-1)/RT) cm(3) molecule(-1) s(-1), F(c) = 0.50 (F(c) is the broadening factor). A classical trajectory analysis of the Ca(+) + CO(2) reaction is then used to investigate the small high pressure limiting rate coefficient, which is significantly below the Langevin capture frequency. Finally, the implications of these results for calcium chemistry in the mesosphere are discussed.     

Crystal Structure of 2-Germatranylmethyl-N-(4'-methylphenyl) succinimide

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Triterpenoid Saponins from Clematis tangutica

Clenlall\vlanglllica(Maxim).KorshisaTibetanherbandhasbeenusedtotreatindigestionandskindiseasesl.Nophytochemicalworkonthisplanthasbeenreportedinliterature.Inourwork.someglycosideswereobtainedtyomaerialpartofthisplant.Inthispaper.thestructureelucidationoftwonewtriterpenoidsaponins.tanguticosideAandBaredescribed.Onmineralacidhydrolysis.both1and2yieldedthesameaglycone.BycomparingMP.MS,'HNMRand13CNMRspectratheaglyconewasdeterminedtobehederagenin=.Glucoseandrhamnosewereobtainedfromhydrolysis…     

1,10-邻菲咯啉衍生物的合成及其晶体结构

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