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1.
I. V. Medrish A. V. Virovets E. V. Peresypkina L. B. Serezhkina 《Russian Journal of Inorganic Chemistry》2008,53(7):1034-1039
Single crystals of Cs4[(UO2)2(C2O4)(SO4)2(NCS)2] · 4H2O (I) and (NH4)4[(UO2)2(C2O4)(SO4)2(NCS)2] · 6H2O (II) have been synthesized and studied by X-ray diffraction. The crystals of both compounds are orthorhombic with the space group
Pbam, Z = 2, and unit cell parameters a = 12.0177(3) ?, b = 18.6182(5) ?, c = 6.7573(10) ?, R = 0.0376 (I); a = 11.6539(9) ?, b = 18.3791(13) ?, c = 6.7216(5) ?, R = 0.0179 (II). The main structural units of crystals I and II are [(UO2)2(C2O4)(SO4)2(NCS)2]4− chains belonging to the crystal-chemical group A2K02B22M21 (A = UO22+, K02 = C2O42−, B2 = SO42−, M1 = NCS−) of the uranyl complexes. The uranium-containing chains are joined into a three-dimensional framework due to a system of
electrostatic interactions with the cesium or ammonium ions in the structure of I. In the structure of II, this framework is additionally stabilized by hydrogen bonds involving the outer-sphere water molecules and ammonium ions.
Original Russian Text ? I.V. Medrish, A.V. Virovets, E.V. Peresypkina, L.B. Serezhkina, 2008, published in Zhurnal Neorganicheskoi
Khimii, 2008, Vol. 53, No. 7, pp. 1115–1120. 相似文献
2.
利用微波技术合成了配合物[Gd2(Gly)6(H2O)4](ClO4)6(H2O)5, 进行了化学成分分析、红外表征和热重分析. 应用X衍射仪测定其晶体结构, 该晶体为一维链结构, 属三斜晶系, P 空间群, 晶胞参数: a=1.1569(17) nm, b=1.4138(2) nm, c=1.5642(2) nm, α=96.910(2)°, β=102.735(2)°, γ=105.512(2)°, V=2.3606(6) nm3, Z=2, Dc=2.144 g•cm-3. 采用精密溶解-反应量热计, 通过设计热化学循环, 计算出了该配合物的标准摩尔生成焓为 -(7960.73±3.23) kJ•mol-1. 相似文献
3.
Laurence Duvieubourg Francis Abraham Stéphane Grandjean 《Journal of solid state chemistry》2005,178(11):3437-3444
Two modifications of the new uranyl oxalate hydroxide dihydrate [UO2)2(C2O4)(OH)2(H2O)2] (1 and 2) and one form of the new uranyl oxalate hydroxide trihydrate [(UO2)2(C2O4)(OH)2(H2O)2]·H2O (3) were synthesized by hydrothermal methods and their structures determined from single-crystal X-ray diffraction data. The crystal structures were refined by full-matrix least-squares methods to agreement indices R(wR)=0.0372(0.0842) and 0.0267(0.0671) calculated for 1096 and 1167 unique observed reflections (I>2σ(I)), for α (1) and β (2) forms, respectively and to R(wR)=0.0301(0.0737) calculated for 2471 unique observed reflections (I>2σ(I)), for 3. The α-form of the dihydrate is triclinic, space group , Z=1, a=6.097(2), b=5.548(2), , α=89.353(5), β=94.387(5), γ=97.646(5)°, , β-form is monoclinic, space group C2/c, Z=4, a=12.180(3), b=8.223(2), , β=95.817(4), . The trihydrate is monoclinic, space group P21/c, Z=4, a=5.5095(12), b=15.195(3), , β=93.927(3), . In the three structures, the coordination of uranium atom is a pentagonal bipyramid composed of dioxo UO22+ cation perpendicular to five equatorial oxygen atoms belonging to one bidentate oxalate ion, one water molecule and two hydroxyl ions in trans configuration in 2 and in cis configuration in 1 and 3. The UO7 polyhedra are linked through hydroxyl oxygen atoms to form different structural building units, dimers [U2O10] obtained by edge-sharing in 1, chains [UO6]∞ and tetramers [U4O26] built by corner-sharing in 2 and 3, respectively. These units are further connected by oxalate entities that act as bis-bidentate to form one-dimensional chains in 1 and bi-dimensional network in 2 and 3. These chains or layers are connected in frameworks by hydrogen-bond arrays. 相似文献
4.
M. Zabel A. I. Poznyak V. I. Pawlowskii 《Russian Journal of Coordination Chemistry》2008,34(11):824-829
The structures of the crystals of Ba4[trans(N)-Co(Ida)2]3[cis-(N)-Co(Ida)2]2(ClO4)3 · 19.46H2O · 2CH3OH (I) and Ba[trans-(N)-Co(Ida)2]2 · 7H2O (II) (H2Ida is iminodiacetic acid) were determin by X-ray diffraction. The crystals of I containing two geometric isomers of the complex
anions [Co(Ida)2]− were obtained by a slow cooling of a hot solution, which contained initially only the cis-isomer. One Ba atom in I interacts with the trans-complex and with two cis-complexes to give a three-dimensional framework in crystal I. The positive charge of the last framework is compensated by
one more trans-complex and by the perchlorate ions, one of which acts as a bidentate ligand with respect to the Ba atom. The crystals of
II are built of the chains with the alternating Ba atoms and the trans-(N)-[Co(Ida)2]− anions. The other anions of the same structure are each “suspended” to the Ba atoms of the chain.
Original Russian Text ? M. Zabel, A.I. Poznyak, V.I. Pawlowskii, 2008, published in Koordinatsionnaya Khimiya, 2008, Vol.
34, No. 11, pp. 831–836. 相似文献
5.
A. A. Rybinskaya E. A. Shusharina P. E. Plyusnin Yu. V. Shubin S. V. Korenev S. A. Gromilov 《Journal of Structural Chemistry》2011,52(4):816-819
A single crystal of [Pd(NH3)4]3[Ir(NO2)6]2·H2O double complex salt is studied by X-ray diffraction. Crystallographic characteristics are as follows: a = 21.0335(5) ?, b = 8.0592(2) ?, c = 21.3452(5) ?, β = 91.254(1)°, V = 3617.43(15) ?3, P21/c space group, Z = 4, d
x = 2.714 g/cm3. Single-layer pseudohexagonal packing of complex anions is determined along the [−1 0 1] direction in the structure. Complex
cations and crystallization water molecules are located between the mentioned layers. 相似文献
6.
[Mn2(CHZ)4(H2O)2](PA)4·10H2O的制备和分子结构研究 总被引:10,自引:0,他引:10
本文论述了苦味酸(PA,三硝基苯酚)锰与碳酰肼(CHZ, NH2NHCONHNH2)反应制备目标配合物的方法及该配合物的晶体结构。该配合物的结构式为[O,O′-μ-Mn2(CHZ)4(H2O2)](PA)4·10H2O。晶体属三斜晶系,P1 空间群。晶体学参数为:a=0.8269(1) nm, b=1.2812(1) nm, c=1.5915(1) nm; α=109.58(1)°, β=95.19(1)°, γ=92.76(1)°, V=1.5765(2)nm3; Z=1, Dc=1.580 g·cm-3, μ(Mo Kα)=520 m-1。晶体结构经全矩阵最小二乘法修正,最终偏离因子R=0.0557。该化合物为具有中心对称的双核配合物,以两个碳酰肼分子中羰基氧为桥原子将两个锰离子结合起来,与锰离子形成配位键的原子是碳酰肼分子第一、五氮原子,羰基氧原子和水分子中的氧原子,锰离子的配位数为七。若味酸根作为外界离子以库伦力和氢键与内界离子结合成配合物分子。 相似文献
7.
8.
The sandwich-type [Na(UO2)2(H2O)4(BiW9O33)2]13− uranium (VI) has been synthesized by reacting the trivacant species of B-α-[BiW9O33]9− with
and investigated by IR and UV–Vis spectroscopy, and elemental analysis. The X-ray single crystal analysis was carried out
on Na13[Na(UO2)2(H2O)4(BiW9O33)2] · 33H2O (I) which crystallizes in the orthorhombic system, space group Pna21 with a = 33.8454(19) ?, b = 21.1484(12) ?, c = 13.2403(7) ?, α = 90°, β = 90°, γ = 90°, and Z = 4. The polyanion consists
of two lacunary B-α-[BiW9O33]9− groups which sandwich two uranyl cations and one sodium cation. The uranium atoms adopt distorted pentagonal–bipyramidal coordination,
achieved by two equatorial bonds to each BiW9O33 unit and one external water ligand. The coordination of each uranium atom is evident by the shift of νas(W–Ob–W) and νas(Bi–O) stretching vibrational bonds.
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献
9.
A. V. Oreshkina G. Z. Kaziev S. Holguin Quinones A. I. Stash P. A. Shipilova 《Russian Journal of Coordination Chemistry》2011,37(11):845-848
The complex [Na2(H2O)10][Na(H2O)3]2[MnW6O18(OH)6] · 6H2O was synthesized and studied by mass spectrometry, thermogravimetry, IR spectroscopy, X-ray diffraction. The crystals are
monoclinic, space group P21/n, a = 11.698(2), b = 11.670(2), c = 14.652(3) ?, β = 102.52(3)°, V = 1952.7(7) ?3, ρ(calcd.)= 3.45 g/cm3, Z = 2. 相似文献
10.
利用温度跃升傅立叶变换红外原位分析技术在0.1MPa氩气的条件下,对斯蒂酚酸碳酰肼铅和斯蒂酚酸碳酰肼镉的快速热分解过程进行了研究。研究结果表明,斯蒂酚酸碳酰肼铅的主要热分解气体为NH3, H2O和 HONO,而斯蒂酚酸碳酰肼镉的主要热分解气体为CO 和 NO,因此斯蒂酚酸碳酰肼镉不满足作为环境友好起爆药的使用要求。这两种化合物在快速热分解过程中均产生金属异氰酸盐、金属碳酸盐和金属氧化物。利用Real程序计算其燃烧温度可得斯蒂酚酸碳酰肼铅的燃烧温度要高于斯蒂酚酸碳酰肼镉,对其燃烧产物进行计算,发现HNCO不在燃烧产物之列,NO的含量也比实验得出的浓度要小。 相似文献
11.
配合物1由醋酸镉和Nahca(对羟基肉桂酸钠)在水溶液中反应得到,配合物2由醋酸铜,Hhca和phen在水和乙醇混合溶液中反应得到。配合物1属正交晶系,Pbcn空间群。配合物2属单斜晶系,C2/c空间群。配合物1和2中配体中的羧酸根与金属离子都是螯合配位的,末端羟基没有参与配位。配合物1和2的结构中都包含了丰富的氢键。通过氢键作用,配合物1形成了三维网状超分子结构,配合物2形成了二维层状超分子结构。 相似文献
12.
Compound [Ni(hmt)2(SCN)2(H2O)2][Ni(SCN)2(H2O)4](H2O)2 (hmt=hexamethylenetetramine) was pre-pared and structurally characterized by means of X-ray single crystal diffraction. The two neutral units [Ni(hmt)2(SCN)2(H2O)2] and [Ni(SCN)2(H2O)4] are joined together through hydrogen bonds N…H-O, O…H-O and S…H-O. In the solid state, the compound has three-dimensional network structure. The determination of its variable-temperature magnetic susceptibilities (5~300K) shows that the magnetic behavior obeys the Curie-Weiss law over the whole temperature ranges. 相似文献
13.
E. A. Kovalenko D. Yu. Naumov V. P. Fedin A. Müller 《Russian Journal of Coordination Chemistry》2012,38(3):153-158
The chain coordination polymers [Na2(μ-H2O)(H2O)CB[5]]Cl2 · 6H2O (I), [Na3(μ-H2O)4(H2O)4(CNPy@CB[6])]Cl3 · 8H2O (II), and [Rb2(μ-H2O)2(CNPy@CB[6])]Cl2 · 8H2O (III) were prepared by heating (110°C) of a mixture of sodium or rubidium chloride, cucurbit[n]uril (CB[n], where n = 5, 6), 4-cyanopyridine, and water. According to X-ray diffraction data, binding of polynuclear cations with CB[n] in I–III occurs through coordination of the oxygen atoms of the cucurbit[n]uril portals to alkali metal atoms. Complexes I–III of the above composition isolated to the solid phase as supramolecular compounds with CB[n] were structurally characterized
for the first time. 相似文献
14.
[Cu(TO)2(H2O)4](PA)2 was prepared by mixing the aqueous solution of 1,2,4-triazol-5-one(TO) and Cu(PA)2. The molecular structure and crystal structure of the title complex was determined by X-ray single crystal diffraction method. The crystal is triclinic, space group with a=0.7321(1)nm,b=0.7474(2)nm,c=1.3649(3)nm;α=88.65(2)°,β=85.63(1)°,γ=63.35(1)°;V=0.6655(2)nm3,Z=1. The Cu2+ coordinated with two TO molecule through its 2-nitrogen atom and four water molecules and showed an octahedral configuration. 相似文献
15.
E. A. Gerasimova T. V. Utkina E. V. Peresypkina A. V. Virovets T. G. Cherkasova 《Russian Journal of Inorganic Chemistry》2009,54(5):692-697
New mixed-ligand coordination compounds[Cd(DMSO)5(NCS)][Cr(NH3)2(NCS)4] · 3DMSO (I) and [Mn(DMSO)4(H2O)2][Cr(NH3)2(NCS)4]2 · 6DMSO · 2H2O (II) have been synthesized and studied by IR spectroscopy and X-ray diffraction analysis. The crystals of compound I are monoclinic, a = 14.5275(7), b = 23.1692(11), c = 14.6969(6) ?, β = 97.057(2)°, V = 4909.4(4) ?3, space group P21/c, Z = 4, ρcalcd = 1.507 g/cm3, R = 0.0556. The crystals of compound II are triclinic, a = 11.7784(3), b = 12.1760(3), c = 13.1922(2) ?, α = 85.5420(10)°, β = 87.9000(10)°, γ = 70.3680(10)°, V = 1776.46(7) ?3, space group P
, Z = 1, ρcalcd = 1.444 g/cm3, R = 0.0350.
Original Russian Text ? E.A. Gerasimova, T.V. Utkina, E.V. Peresypkina, A.V. Virovets, T.G. Cherkasova, 2009, published in
Zhurnal Neorganicheskoi Khimii, 2009, Vol. 54, No. 5, pp. 751–755. 相似文献
16.
M. P. Yutkin M. S. Zavakhina D. G. Samsonenko V. P. Fedin 《Journal of Structural Chemistry》2011,52(2):365-370
Two metal-organic coordination polymers [Cu(bpy)2(H2O)2](NO3)2·4.5C2H5OH (1) and [Cu2(bpy)(H2O)(L-pha) 2](NO3)2·H2O (2) (L-Hpha = L-phenylalanine, bpy = 4,4′-bipyridyl) are prepared by slow evaporation of an aqueous alcoholic solution of copper nitrate,
L-phenylalanine, and 4,4′-bipyridyl. The structure and composition of the obtained compounds are determined by single crystal
XRD. The framework of compound 1 is positively charged and forms two types of intersecting channels. Compound 2 is a homochiral metal-organic coordination polymer whose structure contains L-phenylalanine anions. 相似文献
17.
The crystal of [Ni(dien)2]2[Mn(NCS)6]·H2O was synthesized and the structure of its single crystal was determined by X-ray diffraction. The crystal is monoclinic system, space group P21/c with a=16.544(3),b=15.137(2), c=17.334(3)?, β=99.90(1)°, V=4276.3(12)?3, Z=4, Dc=1.479g·cm-3, Mr=951.55, F(000)=1998, μ=1.489mm-1, R=0.0399, Rw=0.0958. IR was also determined. 相似文献
18.
E. V. Grechishnikova E. V. Peresypkina A. V. Virovets Yu.l N. Mikhailov L. B. Serezhkina 《Russian Journal of Coordination Chemistry》2007,33(6):458-465
The complexes [UO2(C6H4NO2)2(C6H5NO2) (I) and [UO2SO4(C6H5NO2)(H2O)] · H2O (II) were synthesized and studied by X-ray diffraction analysis. Crystals I are monoclinic: a = 7.0081(3), b = 14.9624(7), c = 9.1837(5) ?, β = 96.594(2)°, Z = 2, space group P21/m. Crystals II are triclinic: a = 6.8097(6), b = 9.3837(8), c = 10.4556(10) ?, α = 85.279(3), β = 75.434(3), γ = 69.180(3)°, Z = 2, space group
. The main structural unit of crystal I is a mononuclear fragment, which belongs to the crystal chemical group AB
2
01
M1 (A = UO
2
2+
, B01 are ions of pyridine-2-carboxylic (picolinic) acid, M1 are molecules of picolinic acid) of the uranyl complexes. The main structural unit of crystal II is a chain, which belongs to the crystal chemical group AT3M
2
1
(where T3-SO
4
2−
, M1 are water and picolinic acid molecules) of the uranyl complexes. Picolinic acid in complexes I, II was found to have a zwitterion structure.
Original Russian Text ? E.V. Grechishnikova, E.V. Peresypkina, A.V. Virovets, Yu.N. Mikhailov, L.B. Serezhkina, 2007, published
in Koordinatsionnaya Khimiya, 2007, Vol. 33, No. 6, pp. 468–475. 相似文献
19.
该文报道了N,N′-(2-苯并咪唑基甲基)亚氨基甲基膦酸{bbimpH2,[(C7H5N2)CH2]2NCH2PO3H2}的2个镍化合物Ni2(bbimp)2(4,4′-bipy)(H2O)2·2H2O (1)和[Ni2(bbimp)2(H2O)2][Ni(bbimp)(H2O)2]2·4H2O (2)。化合物1是4,4′-联吡啶作为桥连配体的中性双核结构。化合物2含有1个中性的[Ni2(bbimp)2(H2O)2]双核分子与2个中性的[Ni(bbimp)(H2O)2]单核分子。双核分子单元中的2个Ni(Ⅱ)离子被2个膦酸氧桥连。在化合物2中,膦酸氧桥连的2个Ni(Ⅱ)离子之间存在铁磁性相互作用。 相似文献
20.
The synthesis and spectroscopic properties of a Na+ complex with ligand 3-aminopyrazine-2-carboxylic acid were described. The resulting complex was characterized by elemental analysis, IR, UV-Vis, NMR spectroscopy and single crystal X-ray diffraction method. The title compound crystallizes in the triclinic system with space group . The crystalline structure of this compound consists of supramolecular architectures involving strong intramolecular N—H…O in pyrazine molecules and intermolecular O—H…N, O—H…O, and N—H…N hydrogen bonds between substituted pyrazine and water molecules. 相似文献