Chlorine reaction with platinum triamine [Pt(N,N-DimeTm)PyCl3]Cl (N,N-DimeTm = (CH3)2N(CH2)3NH2). Crystal structure of [Pt(N,N-DimeTm)Cl2], [Pt(N,N-DimeTm(Py)Cl3]Cl · H2O and [Pt{(CH3)2N(CH2)2C(O)NH}(Py)Cl3]

Treatment of platinum(II) diamine [Pt(N,N-DimeTm)Cl₂] (I) with pyridine gave tetramine [Pt(N,N-DimeTm)Py₂]Cl₂ (II); by oxidation with chlorine this was converted to Pt(IV) triamine, [Pt“(N,N-DimeTm(Py)Cl₃]Cl (III) with a six-membered chelate ring. According to X-ray diffraction data, the reaction of complex II with chlorine is accompanied by removal of the pyridine molecule from the trans-position to the NH₂ group of N,N-dimethyltrimethylenediamine. The reaction of complex III with chlorine at 20°C afforded a mixture of compounds (IV) and the complex [Pt“(CH₃)₂N(CH₂)₂C(O)NH”(Py)Cl₃] (V) with an amidate six-membered metal ring, dimethylpropioamide, which was also isolated upon refluxing a mixture of IV in an aqueous solution. The UV/Vis and IR spectra of the obtained complexes were studied, and X-ray diffraction analysis of I, III, and V was performed. The crystals of I are triclinic, space group P $ \bar 1 $ ; a = 7.6526(4) Å, b = 11.5571(6) Å, c = 12.4432(7) Å, α = 113.85(1)°, β = 96.54(2)°, γ = 106.78(2)°; Z = 4; R _hkl = 0.051. The crystals of III are monoclinic, space group C2/c; a = 36.715(2) Å, b = 7.8179(4) Å, c = 29.721(16) Å, β = 127.80(1)°; Z = 16; R _hkl = 0.036. The crystals of V are monoclinic, space group P2₁/n; a = 7.0398(6) Å, b = 27.458(2) Å, c = 7.687(6) Å, β = 106.270(1)°; Z = 4; R _hkl = 0.052.     

Hydrothermal synthesis of a mixed-valence hexamolybdate cluster: crystal structure of [HN(CH2CH2)3N]2[HMoVMoVI5O19]·[N(CH2CH2)3N]

The hydrothermal reaction of MoO₃, V, Na₂WO₄· 2H₂O, [N(CH₂CH₂)₃N](1,4-diazabicyclo[2.2.2] octane), and H₂O at 160°C for 90h gave dark-brown crystals of [HN(CH₂CH₂)₃N]₂[HMo^VMo^VI ₅O¹⁹]·[N(CH₂CH₂)₃N], (1), in 40% yield. Complex (1) is the first one-electron reduced mixed-valence hexamolybdate to be crystallized and structurally characterized. The crystal structure of (1) consists of discrete [HMo^VMo^VI ₅O₁₉]^2– anions, [HN-(CH₂CH₂)₃N]⁺ cations, and neutral [N(CH₂CH₂)₃N] molecules of crystallization.     

Synthesis and Characterization of [NH3（CH2）2NH2（CH2）2NH3]BiCl6

1 INTRODUCTION During the past decade, a series of organic-inor- ganic hybrid compounds based on metal halide units have been prepared and studied[1]. The combination of organic and inorganic components at the mole- cular level affords us the opportunity to design new hybrid materials and modulate the properties of components[2]. As a result, some interesting proper- ties, such as non-linear optical[3], interesting magne- tic[4], efficient luminescence[2], ideal thermal and mechanical sta…     

Solvothermal Synthesis and Crystal Structure of [H2N（CH2）2NH3]{Co[H2N（CH2）2NH2]3}[SbSe4]

1 INTRODUCTION The chalcogenidometallates with open frame- works have attracted considerable interest as pos- sible zeolite-like materials, of which highly interes- ting properties could be expected. Over the last de- cades a large number of thioanti…     

Structure of [NH3(CH2)4NH3]2P4O12·2H2O

After a short survey of what is the present state of the cyclophosphates associated with the organic molecule NH₂(CH₂)₄NH₂, we report chemical preparation and crystal structure for a new example of such compounds. [NH₃(CH₂)₄NH₃]₂P₄O₁₂.2H₂O is monoclinic (S.G. : P2₁/n), with Z = 2 and the following unit-cell parameters : a = 7.6728(8) Å, b = 18.962(3) Å, c = 7.9789(9) Å β = 111.751(9)°. Bidimensional layer arrangement of P₄O₁₂ rings connected to the water molecules thanks to weak H-bonds run parallel to the ab plane. The organic groupements located between these inorganic planes perform the three-dimensional cohesion by NH····O hydrogen bonds.     

202 MHz 31P NMR performances: Part II. The challenge of the {[HN(CH2)2NH] N3P3Cl3}2[HN(CH2)nNH] cyclophosphazenic species

202.458 MHz ³¹P NMR (Bruker WM 500) performances are illustrated for new cyclophosphazenes whose ABC systems, that is 3 expected doublets of doublets, give singles or “deckle-edged” singlets when using low-field NMR equipment.     

The reaction of Sn[CH(SiMe3)2]2 with ethyne: formation of (HCC)Sn[CH(SiMe3)2]2(μ-trans-CHCH)Sn[CH-(SiMe3)2]2(CHCH2)

The reaction of Sn[CH(SiMe₃)₂]₂ and ethyne at ambient temperature affords a mixture of products, from which the title compound has been separated and identified by IR, ¹H, and ¹³C NMR spectroscopy.     

顺-[Pt(NH3)2Cl2]与核苷的作用

用分光光度法研究了37℃、pH=5.5、0.1M NaClO₄介质中cis[Pt(NH₃)₂Cl₂]和DNA组成物--鸟嘌呤核苷、腺嘌呤核苷、胞嘧啶核苷及胸腺嘧啶核苷的作用。发现顺-[Pt^Ⅱ(NH₃)₂]与前三种核苷能生成组成为1:1、1:2二种络合物,与胸腺嘧啶核苷不作用。所测得一级和二级表观生成常数,以及作用初速分别有如下大小次序:Guo>Ado>Cyt》Thy;Guo>Ado>Cyt》Thy.在所得结果基础上讨论了顺-[Pt(NH₃)₂Cl₂]和癌细胞中DNA作用的可能方式。     

Organically templated zinc selenites: MIL-86 or [H2N(CH2)2NH2]2·Zn4(SeO3)4 and MIL-87 or [H3N(CH2)3NH3]4·Zn4(SeO3)8

Two new organically templated zinc selenites MIL-86 or [H₂N(CH₂)₂NH₂]₂·Zn₄(SeO₃)₄ and MIL-87 or [H₃N(CH₂)₃NH₃]₄·Zn₄(SeO₃)₈ have been prepared by the reaction of ZnO with SeO₂ under hydrothermal conditions in the presence of organic amines. Crystal data: MIL-86, monoclinic, space group P2₁/n, a=6.7712(4) Å, b=9.4520(5) Å, c=8.0295(4) Å, β=113.601(1)°, V=470.91(4) ų; MIL-87, orthorhombic, space group Pbcm, a=8.8311(3) Å, b=7.8391(2) Å, c=16.2992(4) Å, V=1128.36(6) ų. MIL-86 combines the structural features of templated networks and coordination polymers. Its structure is built up from ZnO₃N tetrahedra and SeO₃ pseudo-pyramids as the polyhedral building units. The ZnN bond corresponds to a direct link between zinc and the ethylenediamine template. In the other hand, MIL-87 is built up from chains of vertex-linked ZnO₄ and SeO₃ building units crosslinked by 1,3-diammonium propane cations. These structures are understood by comparison with the already known organically templated zinc phosphites.     

Novel negatively charged cyanocuprate(I) host [Cu4(CN)7]3− built of tetrahedral Cu(I) coordination centers: Crystal structure of [{NH2(CH2CH2)2NCH2CH2NH2}2H][Cu4(CN)7]

The title inclusion compound [{NH₂(CH₂CH₂)₂NCH₂CH₂NH₂}₂H][Cu₄(CN)₇] was obtained as single crystals from an aqueous solution containing CuCN, KCN, andN-(2-aminoethyl)piperazine. It crystallizes in the monoclinic space groupP2/n,a = 12.3829(9),b = 8.5970(9),c = 12.6633(7) Å, = 109.984(5)°,z = 2,R = 0.035 for 2921 independent reflections. The inclusion structure is composed of the hydrogen-bonded dimeric onium guest [{NH₂(CH₂CH₂)₂NCH₂CH₂NH₂}₂H]³⁺ and the negatively-charged three-dimensional host [CU₄(CN)₇]^3– in which the CN-bridged framework Cu(I) atoms are all tetrahedral. A polyacene-like one-dimensional array of hexagons cornered by Cu(I) atoms and edged by -CN- linkages is arrayed in parallel to theb axis and stacked approximately along the c axis. The Cu(I) corner shared in the one-dimensional array extends an N-coordinate CN group along the c axis to a pair of unshared Cu(I) corners for which the C end behaves as a bifurcated ligand to build up the three-dimensional host structure. The cavity is composed of two networks of the hexagons at the top and bottom and pillared by six >CN- groups and accommodates a dimeric guest ofN-(2-aminoethyl)piperazinium cations protonated at each 4-N with the cations being hydrogen-bonded to each other through the 2-NH₂ groups sharing another H⁺.Presented at the Sixth International Seminar on Inclusion Compounds, Istanbul, Turkey, 27–31 August, 1995.     

Synthesis and Molecular Structure of the Mercury-Bridged Heteronuclear Complex [Pt3(dppm)3 {(μ4-Hg)-RuCp(CO)2}2][PF6]2

Addition of a THF solution prepared by stirring [CpRu(CO)₂]₂ over Na/Hg amalgam to a solution of the triplatinum cluster [Pt₃(dppm)₃(CO)][PF₆]₂ (1) in THF gives the heteronuclear cluster [Pt₃(dppm)₃{(₄-Hg)–RuCp(CO)₂}₂] [PF₆]₂ (2) in 40% yield following chromatography. A single crystal X-ray study of 2 reveals structural parameters for the Pt₃Hg₂ molecular core that are consistent with those of other structurally characterized complexes of this type. ¹H, ¹³C, and ³¹P NMR spectra of this complex indicate that the structure observed in the solid state is retained in solution.     

Synthesis,Molecular Structure,and Thermal Properties of the Supramolecular Complex [Zn{NH(CH2)4O}{S2CN(C2H5)2}2]2 · CH2N(CH2)4O}2

The supramolecular complex [Zn{NH(CH₂)₄O}{S₂CN(C₂H₅)₂}₂]₂ · CH₂N(CH₂)₄O}₂ (I) has been synthesized and studied by X-ray crystallography and thermal analysis. The noncentrosymmetric complex is composed of two structurally nonequivalent molecules of the adduct of bis(diethyldithiocarbamato)zinc with morpholine, which are linked with the outer-sphere N,N’-dimorpholinomethane molecule through two hydrogen bonds N-H?O. The major differences between the adduct molecules are related to the strength of Zn-N bonds, spatial orientation of the coordinated morpholine heterocyclic rings, and the proportion between the contributions of the trigonal bipyramidal (TBP) and tetragonal pyramidal (TP) components to the geometry of zinc polyhedra. Calculations show that the geometry of the zinc polyhedra is almost halfway between TBP and TP. The thermal destruction of supramolecular compound I is accompanied by desorption of the outer-sphere and coordinated organic molecules. At the final stage, defragmentation of the “dithiocarbamate part” of the complex leads to the formation of ZnS.     

COMPLEX SALTS [Pd(NH3)4][Pd(NH3)3NO2] [CrOx3]·H2O AND [Pd(NH3)4][Pd(NH3)3NO2] [CoOx3]·H2O AND SOLID SOLUTIONS [Pd(NH3)4] [Pd(NH3)3NO2][CoOx3]x[RhOx3]1–x·H2O : PROMISING PRECURSORS FOR POROUS NANOALLOYS

Journal of Structural Chemistry - New complex salts [Pd(NH3)4][Pd(NH3)3NO2][CrOx3]·H2O I, [Pd(NH3)4][Pd(NH3)3NO2][CoOx3]·H2O II, and a series of solid solutions...     

Ligand condensation of P(CH2OH)3: Synthesis and structure of [Ni3S2{(CH2OH)2PCH2OP(CH2OH)2}3][Mo6Cl14] · 0.8H2O

Reaction of NiCl₂ · 6H₂O and P(CH₂OH)₃ (THP) with H₂S and (H₇O₃)₂[Mo₆Cl₁₄] · 3H₂O in ethanol produces new trinuclear nickel sulphide complex [Ni₃(μ₃-S)₂{(HOCH₂)₂PCH₂OP(CH₂OH)₂}₃][Mo₆Cl₁₄] · 0.8H₂O (I) with new bidentate phosphine-phosphinite ligand resulted from THP condensation. It was characterized by X-ray structure analysis.     

Synthesis and Crystal Structure of {(PPh3)2ClRu(μ-Cl)-Ru(PPh3)B10H7[OCH(CH3)2]3}·0.4(H2O)

The title compound has been synthesized by the reaction of [RuCl2(PPh3)3] and closo-[B10H10]2- in (CH3)2CHOH solution. Crystals suitable for a single crystal X-ray diffraction analysis were obtained from n-pentane diffused to CH2Cl2 solution. The crystal {(PPh3)2ClRu(μ-Cl)Ru(PPh3)B10H7[OCH(CH3)2]3}·0.4(H2O) is monoclinic , space group P21/n , Mr=1359.47, with a=19.434(4), b =14.340(4), c=25.865(9)(A), β= 95.48(3)°, V=7175(4)(A)3, Dc=1.258 g/cm3, Z=4, λ(MoKα)=0.71073(A),μ=6.03 cm-1, F(000)=2784, R=0.0631, wR2= 0.1425, S=1.001. The title compound is a bimetallic species in which the second ruthenium center is bound to the cluster {(PPh3)RuB10H7[OCH(CH3)2]3} via an Ru-Cl-Ru and two Ru-H-B-Ru bridges. The third isoproxy group replaces a hydrogen atom on B(10) of the cage, which indicates the activity of the cage.     

Synthesis, Structure Characterization and Biological Activity of Layered Vanadium Oxides [ NH3 （ CH2 ）2 NH （ CH2 ）2 NH3 ] [ V6 O14 ]

Introduction Over the past decades, polyoxometalates(POMs)have been attracting extensive interestowing to the widerange of their topological properties and potential appli-cations in catalysis, photochemistry, electrochromism,and magnetism[1,2]. Meanwhile, owing to the potentialapplication of polyoxometalaes as anticancer and antivi-ral drugs, their complexes have attracted increasing in-terest of both inorganic chemists and biochemists[3]. Itis well known that polyoxometalates are excellent …     

Synthesis and Structure of [HOCH2CH2N（CH3）3]4[Cu4OCl10]

ＳｙｎｔｈｅｓｉｓａｎｄＳｔｒｕｃｔｕｒｅｏｆ［ＨＯＣＨ_２ＣＨ_２Ｎ（ＣＨ_３）_３］_４［Ｃｕ_４ＯＣｌ_（１０）］ＷｕＤｉｎｇ－Ｍｉｎｇ；ＨｕａｎｇＸｉａｏ－Ｙｉｎｇ；ＺｈｕａｎｇＨｏｎｇ－Ｈｕｉ（ＳｔａｔｅＫｅｙＬａｂｏｒａｔｏｒｙｏｆＳｔｒｕｃｔ?..     

Synthesis,structure and bonding situation of [(dcpe)Pt(InCp*)2] and {(dcpe)Pt[GaC(SiMe3)3]2}—two novel examples of platinum complexes of low valent Group 13 metal species

In analogy to the corresponding Cp*Al- and Cp*Ga-compounds two further bis(phosphine)platinum complexes [(dcpe)Pt(InCp*)₂] (1(In)) and {(dcpe)Pt[GaC(SiMe₃)₃]₂} (2(Ga)) containing monovalent Group 13 metal species as ligands are accessible by thermal activation of [(dcpe)Pt(H)(CH₂t-Bu)] (dcpe=bis(dicyclohexylphosphino)ethane) followed by the reaction with 2 equiv. of InCp* (Cp*=pentamethylcyclopentadienyl) or GaC(SiMe₃)₃. The crystal structure analysis reveals a distorted tetrahedral coordination of the platinum center for both compounds. The PtIn distances in 1(In) amount to 2.569(1) and 2.556(1) Å. The PtGa distances in 2(Ga) are exceptionally short and amount to 2.315(1) and 2.318(1) Å. Comparative theoretical investigations have been performed on this type of complexes and allow a deeper insight in the bonding situation. The NBO analysis reveals a significantly larger Pt→Ga π-back-donation for the model compound {(dhpe)Pt[GaC(SiH₃)₃]₂} (2M(Ga)) (0.44 e; dhpe=1,2-diphosphinoethane) in comparison with the related model compound [(dhpe)Pt(GaCp)₂] (1M(Ga)) (0.29 e) bearing a strong π-donating organic ligand at the Ga center. A similar trend is observed for the PtGa bond dissociation energies (D_e=33.0 kcal mol⁻¹ for 2M(Ga), D_e=18.3 kcal mol⁻¹ for 1M(Ga)). For the model compound [(dhpe)Pt(InCp)₂] (1M(In)) a value of D_e=19.1 kcal mol⁻¹ has been calculated.     

(CH2)2N和(CH3)2NH+的密度泛函理论计算

用密度泛函理论UB3LYP／6-31G（d,p）方法研究了二甲胺自由基（CH3）2N及其质子化离子（CH3）2NH 的构象和超精细结构．在由构象研究得到的两种自由基的最稳定结构上,用密度泛函的UB3LYP和UB3PW91方法及从头计算的UHF、UMP2（FULL）方法计算了α-质子、β-质子和N核上的超精细偶合常数A（Hα）、A（Hβ）和A（N）结果表明：两种自由基中甲基内旋转的位垒均很低,分别为0．46kJ·mol-1（（CH3）2NH ）和2．6kJ·mol-1（（CH3）2N）．UB3LYP／6-31G（d,p）和UB3PW91／6-31G（d,p）计算的A（Hα）、A（Hβ）和A（N）与ESR实验结果符合得很好,UMP2／6-31G（d,p）方法的计算值与实验值符合得也较好．     

Synthesis and Crystal Structure of Copper(I) Chloride π-Complexes with N-Allyl- and N,N'-Diallylpiperazinium Dichlorides: [C3H5NH(CH2)4NH2]Cu2Cl4and [C3H5NH(CH2)4NHC3H5]0.5CuCl2

The crystals of copper(I) π-complexes with N-allyl piperazine derivatives, [C₃H₅NH(CH₂)₄NH₂]Cu₂Cl₄(I) and [C₃H₅NH(CH₂)₄NHC₃H₅]_0.5CuCl₂(II), were prepared by alternating-current electrochemical synthesis. X-ray diffraction study showed that compounds Iand IIcrystallize in the monoclinic system: for I, space group P2₁/a, a= 10.254(4) Å, b= 12.306(4) Å, c= 10.656(4) Å, γ = 98.83(3)°, V= 1329(2) ų, Z= 4, R= 0.0457 for 1334 independent reflections; for II, space group P2₁/n, a= 10.187(2) Å, b= 7.283(2) Å, c= 10.480(3) Å, γ = 100.72(2)°, V= 764.0(6) ų, Z= 4, R= 0.0371 for 1025 independent reflections. The structure of Iis composed of {Cu₂Cl₄(C₇H₁₆N₂)}₂dimers linked by fairly strong (N)H···Cl hydrogen bonds (2.35(4) Å). The structure of IIconsists of centrosymmetrical dimeric Cu₂Cl₄ ^2–anions, whose copper atoms coordinate the allyl groups of different centrosymmetrical organic cations. The dimer–ligand chains are stretched along the [ $ {11} $ 0] direction and are joined by hydrogen contacts (N)H···Cl (2.62(4) Å).