Formation and Crystal Structure of [(F5TeOXe)+·SO2ClF][Sb(OTeF5)6-]

Xe(OTeF₅)₂ reacts with Sb(OTeF₅)₃ under the formation of [Xe₂(OTeF₅)₃]⁺[Sb(OTeF₅)₆]^-. From SO₂ClF solution a yellow solvate [F₅TeOXe]⁺·SO₂ClF· [Sb(OTeF₅)₆]^- is formed with the crystal data: a = 1028.1(1), b = 1040.9(1), c = 1780.2(3) pm, α = 98.07(1), β = 97.68(1), γ = 105.82(1)°, space group . The O-Xe···O fragment is essentially linear (176.1(2)°), and the two Xe-O distances are quite different 197.1(4) and 242.6(4) pm.     

Tieftemperatur-flüssigphasefluorierung von pentafluorphenyl-element-Verbindungen. Darstellungen und eigenschaften von (C6F5)3AsF2, (C6F5)3SbF2, (C6F5)2SeF2, (C6F5)2SeO,C6F5TeF3 und Cs[(C6F5)3EF3] (E = As,Sb) [1]

The fluorination reactions of (C₆F₅)₃E (E = As, Sb) with elemental flourine yield (C₆F₅)₃EF₂ in high yields. From the reactions of (C₆F₅)₃EF₂ with CsF the new salts Cs[(C₆F₅)₃EF₃] are obtained. (C₆F₅)₂SeF₂ and C₆F₅TeF₃ are formed for the first time by reacting (C₆F₅)₂SeF and (C₆F₅)₂TeF₂ with elemental flourine and XeF₂, respectively. (C₆F₅)₂SeF₂ rapidly reacts with glass, and the new compound (C₆F₅)₂SeO is isolated. The preparations, properties and ¹⁹F NMR spectra of the new compounds are described.     

Preparation and X-ray Crystal Structure of Di-chlorobis (p-t-butylphenylbutyl Sulfide)Palladium(Ⅱ)

ＮＴＲＯＤＵＣＴＩＯＮＩｔｉｓｋｎｏｗｎｔｈａｔｄｉａｌｋｙｌｓｕｌｆｉｄｅｓａｒｅｅｆｅｃｔｉｖｅｅｘｔｒａｃｔａｎｔｓｆｏｒｔｈｅｅｘｔｒａｃｔｉｏｎａｎｄｓｅｐａｒａ ｔｉｏｎｏｆｎｏｂｌｅｍｅｔａｌｓ〔１，２〕．Ｐａｌａｄｉｕｍｃｏｍｐｌｅｘ...     

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

1INrnODUCTIONItiswell-knownthatitaconicacidderivativesandgermatraneshavemanybioac-tivitiest1.23.lnordertoinvestigatethestructureandantitumoractivitiesofnewger-maniumcompounds,wesynthesizedaseriesofpolycycliccompoundsbythereactionoftrichlorogermanewith2-succinimidesor2-methylenesuccinamicacids[3i.Aspartofthiswork,n0wwereP0rtinthispaPerthecrystalstructureofthetitlec0mpound.2EXPERIMENTAL2-Germatranylmethyl-N-(4'-methylphenyl)succinimidewassynthesizedasacolourlesscrystal,anditsstructureh…     

The Crystal Structure of N-Benzoyl-N''''-(2-hydroxyethyl)-thiourea

Thiourea compounds are excellent agents of bioactive substance. A number of biological activities are associated with substituted thiourea derivatives. A survey of literature reveals that some work has been reported on benzoylthiourea, which has found plenty of applications as a facile and simple ligand in determination of trances of the transition metal and as an available starting material in preparation of a wide variety of metal complexes. In recent years, N-benzoyl-N'-(2-hydroxyethyl)-th…     

Electride characteristics of M2(η5-E5)2 (M = Be,Mg; E = Sb5-)

Structural Chemistry - Ab initio computation is performed on the binuclear sandwich complexes, M2(η5-Sb5)2. Eclipsed and staggered conformations are generated due to the η5 mode of...     

Synthesis and Crystal Structure of [K(18-Crown-6)]_3P_(11)·2en

1 INTRODUCTIONSince the first report on the reduction of lead by sodium to a green solution in 1891 by Johannis, polyanionic clusters of post-transition metals known as Zintl ions have attracted much attention in chemistry due to their beautiful molecules, diverse reactivity and potential applications[1, 2]. Polyphos- phide anions represent one of the most important classes of zintl ions. The binary alkali-metal poly- phosphides, such as MI4P6 (M = K, Rb, Cs)[3～5], MI3P7 (M = Li-Cs)…     

Solid state mechanism of the thermal dehydration of [Rh(NH3)5(H2O)]X3 (X = Cl−, Br−, I−)

The solid phase thermal deaquation-anation of [Rh(NH₃)₅(H₂O)]X₃ (X = Cl⁻, Br⁻, I⁻) has been investigated by means of isothermal TG measurements applying all the principal g(α) expressions (0.8 ⩾ α ⩾ 0.2). The values found for the activation energy are low: ≈ 95 kJ mol⁻¹ for the Cl⁻ compound; ~105 kJ mol⁻ for the Br⁻ compound and ≈110 kJ mol⁻¹ for the I⁻ compound. These data permit the assignment of the deaquation-anation mechanism of the S_N1 dissociative type, involving a square-based pyramid activated complex and elimination of water as Frenkel defects. These values are similar to those reported for the Co(III) and Ir(III) analogues, indicating that the D_q parameter is not the principal contribution to the activation energy of the dehydration-anation process.     

Crystal Structure of Bis(3-hydroxy-2-pyridyl)disulfide

ＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅｏｆＢｉｓ（３－ｈｙｄｒｏｘｙ－２－ｐｙｒｉｄｙｌ）ｄｉｓｕｌｆｉｄｅＣｈｅｎＸｕｅ－Ｔａｉ；ＫａｎｇＢｅｉ－Ｓｈｅｎｇ；ＸｕＹｏｎｇ－Ｊｉｎ；ＨｕＹｏｎｇ－Ｈａｎ（ＳｔａｔｅＫｅｙＬａｂｏｒａｔｏｒｙｏｆＳｔｒｕｃｔ...     

Synthesis and Crystal Structure of [K(18-Crown-6)]3P11·2en

The undecaphosphide anion in ethylenediamine/18-crown-6 solution is isolated as [K(18-crown-6)]3P11·2en 1.The crystal structure has been determined by single-crystal X-ray diffraction.The crystal is of monoclinic,space group P21 with a = 13.4731(7),b = 16.1123(6),c =16.5117(9) (A),β = 112.133(2)°,V = 3320.3(3) (A)3,Dc= 1.371 g/cm3,C40H88K3N4O18P11,Mr=1371.11,F(000) = 1444,μ = 0.532 mm-1,Z = 2,R = 0.0544 and wR = 0.1326 for 11423 observed reflections (I ＞ 2σ(I)).The "naked" P11 3- ion is stabilized by two partly sequestered potassiums.The third partly sequestered potassium does not interact with the P atom (P(6)) but with two solvent molecules.     

Crystal Structure of 2-(4-Fluorophenylamino)-2-thiomethyl acetophenone

1mThODUCTIONThioacetalshavebeenwellstudied,becauseoftheirapplicationsinorganicsyn-thesist1i.However,aketohemithioacetalshaveseldombeeninvestigated.Inthispa-Per,wediscussedthecrystalstructureofthetitlecompoundsynthesizedbythereac-tionofabenzoylhemithioacetal(2-hydroxy-2-thiomethylacetoPhenone)and4-fluthroaniline.Sinceknowledgeofthemolecularandcrystalstructureofthetitlecom-PoundwasconsideredusefulforunderstandingthemechanismofthereactionandchemicalproPertiesofaketohemithioacetal,theX-raycr…     

The behaviour of cellulose in hydrated melts of the composition LiXċn H2O (X=I−, NO3−, CH3COO−, ClO4−)

The dissolution behaviour of cellulose in low temperature molten salts was investigated. Depending on the chosen anions in the melt, cellulose shows different reaction behaviour in different Li⁺containing melts. Dissolution of the polymer was observed in molten LiClO₄3H₂O and molten LiI2H₂O. In the hydrated melts of LiCH₃COO2H₂O and LiNO₃3H₂O a fine distribution of cellulose was stated. Cellulose can be regenerated by cooling the melt and removing the salt by dissolution in water.The structure of the recrystallized product is determined by the used low temperature molten salt.     

Crystal and Molecular Structure of Hexahydro-2-(Nitro-Benzoylmethylene)Pyrimidine

1INTRODUCTIONHeterocyclicketeneaminalsareversatilestartingmaterialsforthesynthesisofawidevarietyofnewheterocyclesandfusedheterocycles.Thus,thesynthesisandre-actionofheterocyclicketeneaminalshavegivenrisetomuchattention[18i.Recentlynitrationofheterocyclicketeneaminalswasstudied[9i.Wehavepreparedhexahydro-2-(nitro-benzoylmethylene)pyrimidi(1).ItscrystalstructurehasbeendeterminedbyX-raydiffractionmethodandthemolecularstructureisdiscussed.2EXPERIMENTALThesinglecrystalofhexahydro-2-(nitr…     

Synthesis, Crystal Structure, and Properties of Inorganic-organic Hybrid M(Ⅱ)-Nb(Ⅴ)(M = Co, Cu)Oxyfluorides

T Two isostructural inorganic-organic hybrid M(Ⅱ)-Nb(Ⅴ)oxyfluorides, namely,M(H<,2>O)<,2>(pyz)NbOF<,5>(M = Co 1, Cu 2; pyz = pyrazine)have been hydrothermally synthesized and structurally characterized. Both compounds possess two-dimensional layer structure constructed by neutral M(H<,2>0)<,2>NbOF<,5> chains inter-connected via bridging pyrazine ligands. The structure is further extended into three-dimensional supramolecular architecture through inter-layer H-bonding interactions between the coordinated water molecules and fluorine ions. The luminescent properties and thermal stability of both compounds have been investigated.     

Synthesis and Crystal Structure of Mo(CO)_4(NNP) (NNP=2-(N-Cyclohexyl-N-diphenylphosphinomethyl)aminopyridine)

1 INTRODUCTION The pyridyl-phosphine ligands have been widely used for many years to synthesize hetero- or homo-nuclear metal complexes[1], as electronic differentiation associated with the hard (N) and soft (P) donor atoms dictates their unique reactivities and coordination modes. One of the most common pyridylphosphines studied to date is (2-C5H4N)PPh2 which displays numerous ligating modes ranging from P-coordination and P,N-chelation to the more common P,N-bridging of two metal …     

Crystal Structure and Characterization of 2-N-(2-Hydroxy-benzylidene) Furanmethanoamine Nickel(Ⅱ) Complex

The Ni(Ⅱ) complex with ligand 2-N-(2-hydroxy-benzylidene) furanmethanoamine has been synthesized and characterized by elemental analysis, IR and single-crystal X-ray diffraction.It crystallizes in the monoclinic system, space group C2/c with a = 2.0280(4), b =0.57700(12), c = 1.7340(4) nm, β = 94.74(3)°, Z = 4, Dc = 1.508 g/cm3, the final R = 0.0434 and wR = 0.1112 for 1843 observed reflections with I ＞ 2σ(I).X-ray analysis revealed that the Ni(Ⅱ)ion is coordinated by two nitrogen atoms of Schiff base and two oxygen atoms of salicylaldehyde in the equatorial plane, and the coordination geometry can be described as a square.     

Synthesis and Crystal Structure of a Novel (2:2) Macrocyclic Thiocarbohydrazone

Thiocarbohydrazoneshavebeentestedasantindcrobialandantitumouragentsandwidelyusedinanalyticalchemistry'-'.Ontheotherhand,thechemistryofmacrocycliccompoundshasattTactedcontinuousinterestformanyyears.Thiocarbohydrazide,HZN'N'HC(S)NHN'Hz,anditsSchiffbasecomplexesconstitUteintersstingligandsystemsbecauseoftheavailbilityofseveralpotentialdonorsites,inwhichthioketo-thioenoltautomerismispossible.Significantly,theyareabletoformbothmono-andbinuclearcomplexesbydifferentmethods3-6.Withtheaimofdesign…