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1.
A novel (Me3PhCH2N)2[MoFe4S4(SC6H11)7] cubane-like cluster was obtained from a reaction system including (NH4)2MoS4, FeCl2 and NaSC6H11 in methanol, and characterized by X-ray crystallography. The title compound crystallizes in triclinic space group witha = 1.523 1(3), b =1.610 5(3),c = 1.838 3(4) nm, α = 77.18 (3)°, β = 75.17(3)°, γ = 64.60(3)°, and Z = 2. Also included in this paper are the discussions on the variation of the reaction products obtained from the participation of cyclohexylthiolate and on the changes of the structural features of the products. Project supported by the National Natural Science Foundation of China and the Climbing Program—State Key Project for Fundamental Research in China, and Hong Kong Research Grants Council (Earmarked Grant No. CUHK. 311/94p).  相似文献   

2.
Thetrimolybdenumclusterswithgeneralformula[Mo3(μ3S)(μS)3(μdtp)(dtp)3L](dtp=(S2P(OC2H5)2)-,L=H2O,py,SC(NH2)2etc.)[1](referredtoasM1type[2]),and[Mo3(μ3S)(μS2)3(dtp)3]X(X=Cl,I)[3](referredtoasM2type),aretwomaintypesoftrimolybdenumclusterseverinvestigatedbyourresearchgroup.Aswehavealready…  相似文献   

3.
1 INTRODUCTION The chemistry of complexes containing low-valence molybdenum and tungsten metal atoms hasincreasingly attracted the attention from chemistsand bioinorganic chemists due to their significancefor studying metal enzymes[1~5]. Since the s…  相似文献   

4.
1 INTRODUCTIONSince1980,manyV/Fe/Sheterometallicsulfurclustercompoundshavebeenreported.RauchfussetalobtainedtwokindsofV/Fe/Scompounds[1]using(CH3C5H4)2V2S4asanorganometallicligand,oneis(MeCp)2V2Fe2(NO)2S4withacubanelikestructureandanotheris(MeCp)2V2S4Fe(NO)2and(MeCp)2V2S4…  相似文献   

5.
A dinuclear molybdenum(V) cluster compound (Et4N)2[Mo2S4(i-mnt)2] (i-mnt=l,l-dicyanoethylene-2,2-dithiol, (S2C=C(CN)2]2-) has been prepared by the ligand substitution reaction of Mo2S4(iso-pr2dtp)2 (iso-pr2dtp=S2P(OC3H7)2-) with K2(i-mnt) in the presence of Bt4NI. This cluster was characterized by inrrared spectrum, UV-Vis spectrum and single crystal structure analy-sis. The cluster anion [Mo2S4(i-mnt)2]2- possesses C, symmetry with a crystallographic mirror plane through two bridging S atoms. By the S....S supramolecular interactions between two adjacent cluster anions the [Mo2S4(i-mnt)2]2- anions are linked to form infinite chains along the b axis. Crystal data: monoclinic, space group C2/m, a=1.8748(6), b=1.5360(4), c=1.4322(5) nm, ,β=112.02(2)°, V=3.823(4) nm3, Z=4, Dc=1.50 g/cm3. The final R=0.038 and .RW=0.053 for 3015 observed unique reflections.  相似文献   

6.
新型六核双网兜状簇合物[MoS4Cu5Br3(Py)7]的合成与晶体结构   总被引:1,自引:0,他引:1  
以(NH4)2[Mo2S12]?H2O与过量CuBr在吡啶溶液中反应,得到了一个新型六核Mo/Cu/S簇合物[MoS4Cu5Br3(Py)7]。X-射线单晶结构分析表明它属于三斜晶系,空间群为P?C35H35Br3Cu5MoN7S4,Mr=1335.37,a=11.6274(4),b=12.0127(4),c=18.8872(5),a=82.46(2),b=73.25(2),g=62.800(13),V=2246.8(2)?,Z=2,F(000)=1300.0,Dc=1.974g/cm3,?=5.482mm-1,5718个独立可观察点(I>3(I)),最终偏离因子R和Rw分别为0.042和0.048。标题化合物是由2个相似的网兜状MoS3Cu3簇核通过共用MoSCuS平面形成的双网兜状结构,Mo…Cu距离在2.6830(11)~2.741(2)胖洹?  相似文献   

7.
刘泉  徐庆锋  张勇  陈金香  周志峰  郎建平 《中国化学》2002,20(12):1602-1607
IntroductionThechemistryofthethiometallateanionsiscurrentlyasubjectofintenseinterestduetotheirrichstructuraldi versity ,1 8theirrelevancetoindustrialcatalyticprocess9,10andmetalloenzymes ,11,12 andtheirpotentialutilityasnon linearopticalmaterials .13 16Wehaverep…  相似文献   

8.
IntroductionRecentlywehaveinvestigatedthestructuralchemistryofanumberofdi ortri organotinheteroaromaticcarboxyl ates.1 5Thesestudieshaveshownthatthestructureoforgan otinheteroaromaticcarboxylatesisdependentonboththena tureofthealkylorarylsubstituentboundtothetinatomandthetypeofcarboxylateligand .Inparticular,majorstructuralvariationsareobservedwhencarboxylateligandcontainsanadditionaldonoratom ,suchasapyridineNatom ,availableforcoordinationtotheSnatom .1 3,5 8Wehavenowturnedtothemonoorganotin…  相似文献   

9.
1 INTRODUCTION The synthesis of molybdenum-copper-sulfur clus- ters from the preformed clusters with certain nitro- gen donor ligands remains attractive due to their rich chemistry and electro/photonic properties[1~6]. How- ever, the third-order nonlinear optical performances of these Mo/Cu/S clusters have been limited due to their relatively low solubility in common organic solvents[5]. One possible way to tackle this problem is to introduce bulky organic ligands into the cluster framew…  相似文献   

10.
The synthesis method and crystal structure of a novel Mo3 cluster wmpound are reported. The results of structural analysis and the quantum calculation for the entire cluster molecule reveal that though two Mo3 cluster units, which belong to two different kinds of structural type respectively, show an apparent ionic characteristic, the interaction between them via the bridging S atoms is still quite certain. The relationship between cluster electron counting and stability of the Mo3 clusters are also primarily discussed. Project supported by the National Natural Science Foundation of China (Grant No. 29333031)  相似文献   

11.
SynthesisandStructureof[(C_2H_5)_4N][Mo_3(μ_3-O)(μ-Cl)_3(μ-CH_3CH_2COO)_3Cl_3]ZhuangHong-Hui;WuDing-Ming;HuangJian-Quan;HuangJin-L...  相似文献   

12.
Two new iron-sulfur carbonyl complexes, [Fe2(SC6H4Cl)2(CO)6]?0.5(Et2O) 1 and [Fe3(SC6H4NH2)6(CO)6]?2(MeOH) 2, have been prepared and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. Crystal data for 1: monoclinic, C2/c, a = 18.4439(8), b = 11.0999(5), c = 25.1830(10) ?, β = 97.0370(10)o, V = 5116.8(4) ?3, Z = 8, C20H13Cl2Fe2O6.50S2, Mr = 604.02, Dc = 1.568 g/cm3, μ = 1.540 mm–1, F(000) = 2424, the final R = 0.0545 and wR = 0.1454 for 3443 observed reflections with I > 2σ(I); 2: monoclinic, P21/n, a = 12.350, b = 26.3050(11), c = 16.057 ?, β = 97.891(3)°, V = 5166.9(2) ?3, Z = 4, C44H44Fe3N6O8S6, Mr = 1144.76, Dc = 1.472 g/cm3, μ = 1.128 mm–1, F(000) = 2352, the final R = 0.0442 and wR = 0.1197 for 7978 observed reflections with I > 2σ(I). Complex 1 contains one iron dimer, in which two tricarbonyliron(I) fragments are bridged together by two 4-chlorophenylthiolate ligands, whereas complex 2 contains a linear tri-iron cluster, in which two terminal tricarbonyliron(II) fragments and the central Fe(II) atom are linked together by six 4-aminophenylthiolate bridging ligands.  相似文献   

13.
1 INTRODUCTION Hydrothermal synthesis of Mo(V) phosphates has allowed various structures, all characterized by the presence of identical clusters with the composition Mo12MP8X62 (X = O, OH) to be stabilized[1~6]. Many Mo(V) phosphates with such clusters have been iso- lated to date. The first compound was discovered by Haushalter and Lai[1] for M = Na with the formula (PPh4)2[(H3O)2NaMo6P4O24(OH)7]?5H2O. Recently, a second type of structure has been observed for M = Na (Na8(…  相似文献   

14.
Structural Studies of [V_2S_6O_2(CuPPh_3)_4(CuMeCN)_2]·2CH_2Cl_2·2PrOH   总被引:1,自引:0,他引:1  
StructuralStudiesof[V_2S_6O_2(CuPPh_3)_4(CuMeCN)_2]·2CH_2Cl_2·2PrOHZHANGHan-Hui;YUXiu-Fen;YANGRong-Sheng;ZHENGFa-Kun;HUANGLiao-Yu...  相似文献   

15.
潘国华  庄伯涛 《结构化学》2001,20(5):384-386
1 INTRODUCTION In 1984, thiolate ligand was successfully introduced into molybdenum carbonyl compound by the reaction of Mo(CO)6 with [Et4N]SR( R = C6H5, But) in a moderate condition[1]. From then on, a series of dinuclear molybdenum(0) carbonyl thiolate compounds have been synthesized and characterized by using a variety of thiolate ligands in our research group. It was found that a planar Mo2S2 unit is in the compound [Et4N]2[Mo2(CO)8(SC6H4-CH_3-p)2][2] (2) and a "butterfly" t…  相似文献   

16.
1INTRODUCTIONThepseudoliquidcharacterofheteropolycompoundsascatalystisdeterminedbytheircrystallographicproperties"3.Thedeterminationofthecrystalstructureofhet-eropolycompoundhasbecomeanimportantmethodtocharacterizeandidentifythesecompounds,atthesametimeitalsoprovidesinterestinginformationtoenrichhet-eropolyacidandcatalyticchemistry.Inthispaper,wereportthesynthesisandcrys-talstructureof[(CH,).Nj.H,[ZnW,,SnO,,j.gH,O.2EXPERIMENTAL2.1SynthesisNa,WO..ZH,O(18.2g,55mmol)wasdissolvedin…  相似文献   

17.
An inorganic-organic hybrid thioantimonate(Ⅲ) [CH3(CH2)3NH3]2Sb4S7 1 with layered structure was synthesized by solvothermal method. 1 crystallizes in the triclinic system,space group P1 with a=7.0124(11),b=11.919(2),c=14.879(3),α=108.791(3),β=102.441(3),γ=92.846(2)o,V=1140.1(3)3,Mr=859.71,Z=2,Dc=2.504 g/cm3,μ =5.324 mm-1,F(000)=804,S=1.013,the final R=0.0297 and wR=0.0618 for 3534 observed reflections with I > 2σ(I). 1 consists of [C4H9NH3]+ cations and two-dimensional [Sb4S7]n2n- anion which is composed of three SbS3 trigonal pyramids and one SbS4 unit joined by sharing common corners. The anionic layers are stacked perpendicularly to the c axis of the unit cell forming two-dimensional channels between the layers. The [C4H9NH3]+ cations interdigitate in a bilayer and reside in the 2D channels leading to a sandwich-like arrangement of the anion and cations.  相似文献   

18.
Reaction of [Mo3(CO)7(S,O-C6H4-1,2)3]2- with FeCl2 in MeCN at 60℃ affords a new Mo-Fe-S cluster complex containing MoO3S3 unit and mixed-valeut Mo atoms, [Et4N]2[Mo2Fe-(CO)4(O,S-C6H4-1,2)aCl2] (1). 1 is characterized by elemental analysis, IR, Mossbauer spectra, X-ray photoelectron spectra and mass spectra. And the structure of 1 is suggested as the structure which contains a [Mo(S,O-C6H4-1,2)3] unit of which the two of three sulfur atoms link to a Mo(CO)4-moiety and the three oxygen atoms are coordinated to a FeCl2 ligand.  相似文献   

19.
1 INTRODUCTION Transition metal oxide clusters and their deriva- tives offer an unmatched variety of structural motifs and wide ranging applications in several areas, such as analytical chemistry, materials science and cataly- sis, nanotechnology, chemical sensing, environmental decontamination, biochemical and geochemical pro- cesses, and medicine[1~3]. Polyoxovanadates or vana- dium oxide clusters constitute an important subclass of polyoxometalates and have been studied exten- sively.…  相似文献   

20.
标题化合物由BiCl3和乙酰丙酮在HCI(气)/C2H5OH溶剂中通入H2S气体反应而得。晶体属四方晶系,Mr=1130.76,空间群P41212。晶胞参数a=b=8.867(2),c=41.511(4)A;V=3264(1)A3,Z=4,Dc=2.30gcm(-3),μ(MoKα)=118.607cm(-1),F(000)=2104.晶体结构由重原子法求得。最终偏离因子R=0.072。晶体由分立的(C5H7S2)+阳离子和[Bi2Cl9]3-阴离子组成。每个Bi原子和6个Cl原子形成畸变的八面体配位。2个[BiCl6]八面体共面构成具有2次轴对称的[Bi2Cl9](3-)配阴离子。还讨论了阳离子种类对Bi配阴离子结构类型的影响。  相似文献   

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