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S. Eckhard 《Fresenius' Journal of Analytical Chemistry》1962,186(3):400-401
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Klaus Brodersen 《Fresenius' Journal of Analytical Chemistry》1960,173(2):183-184
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V. V. Sharutin V. S. Senchurin O. K. Sharutina N. V. Somov A. V. Gushchin 《Russian Journal of Coordination Chemistry》2011,37(11):854-860
The complexes [Bu4N]2+[PtBr6]2− (I), [Ph4P]2+[PtBr6]2− (II), and [Ph3(n-Am)P]2+ (III) are synthesized by the reactions of tetrabutylammonium bromide, tetraphenylphosphonium bromide, and triphenyl(n-amyl)-tetraphenylphosphonium bromide, respectively, with potassium hexabromoplatinate (mole ratio 2: 1). After recrystallization
from dimethyl sulfoxide, complexes I, II, and III transform into [Bu4N]+[PtBr5(DMSO)]− (IV), [Ph4P]+[PtBr5(DMSO)]− (V), and [Ph3(n-Am)P]+[PtBr5(DMSO)]− (VI). According to the X-ray diffraction data, the cations of complexes IV–VI have a slightly distorted tetrahedral structure. The N-C and P-C bond lengths are 1.492(7)–1.533(6) and 1.782(10)–1.805(10)
?, respectively. The platinum atoms in the mononuclear anions are hexacoordinated. The dimethyl sulfoxide ligands are coordinated
with the Pt atom through the sulfur atom (Pt-S 2.3280(18)–2.3389(11) ?). The Pt-Br bond lengths are 2.4330(6)–2.4724(6) ?. 相似文献
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The laser-induced fluorescence excitation spectrum of CoC was recorded in the spectral region from 13500 cm-1 to 22000 cm-1, in which the CoC molecules were produced by the reaction of sputtered cobalt atoms with methanol under supersonic jet cooled conditions. Much of the visible spectrum was assigned to transitions between the X2∑+ ground state and F2∑+ state. The 11 bands assigned as (v’=3-13, 0) transitions of the F2∑+- X2∑+ band system were observed and rotationally analyzed. Equilibrium constants for the F2∑+ state were Te=1362 cm-1, ωe=669 cm-1 ,ωe?e=4.3 cm-1, Be=0.546 cm-1, and Re=1.758A. Some new bands were observed. 相似文献
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使用SAC/SAC-CI和D95++,6-311++g,6-311++g**及D95(d)基组,分别对BF分子的基态X1∑+、第一简并激发态A1∏和第二激发态B1∑+的平衡结构和谐振频率进行优化计算.对所有计算结果进行比较,得出6-311++g**基组为最优基组.运用6-311++g**基组和SAC方法对基态X1∑+,SAC-CI方法对激发态A1∏和B1∑+进行单点能扫描计算,并用正规方程组拟合Murrell-Sorbie函数,得到相应电子态的势能函数解析式,由得到的势能函数计算了与X1∑+,A1∏和B1∑+态相对应的光谱常数,结果与实验数据较为一致. 相似文献
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A novel compound, [MnPhen3][(B9C2H11)Co(B8C2H10)Co(B9C2H11)]· CH3CN (Phen = 1,10-phenantroline), comprising a Co(III) dicobaltacarborane cluster anion has been prepared and characterized
by single crystal X-ray diffraction. Crystal data are the following: C44H59B26N7Co2Mn, M = 1139.84, triclinic, space group
, unit cell parameters: a = 13.2465(11) Å, b = 14.521(2) Å, c = 15.2536(15) Å; α = 77.027(9)°, β = 88.500(8)°, γ = 77.274(9)°; V = 2788.5(5) Å3, Z = 2, d
calc = 1.358 g/cm3, T = 295 K, F(000) = 1162, μ = 0.853 mm−1. The structure was solved by the direct and Fourier methods and refined anisotropically (isotropically for hydrogen atoms)
using the full-matrix technique to final factors R
1 = 0.0374, wR
2 = 0.0915 for 7397 I
hkl
≥2σI of 9779 I
hkl
measured (diffractometer Enraf-Nonius CAD-4, λMoK
α
, graphite monochromator, θ/2θ-scanning). The structure is formed from [MnPhen3]2+ cations, [(B9C2H11)×Co(B8C2H10)Co(B9C2H11)]2− anions, and acetonitrile molecules CH3CN. Central Mn atom in the cation has a distorted octahedral coordination environment formed by six nitrogen atoms of three
bi-dentate Phen ligands, average Mn-N bond length being 2.263(2) Å. The anion has a chain-like structure built from three
icosahedra sharing common vertices occupied by the cobalt atoms. The central icosahedron including ten light atoms (8B, 2C)
provides two vertices for the cobalt atoms shared with the other icosahedra having 11 light atoms (9B, 2C). The arrangement
of-C2-groups in the anion corresponds to a quasi-gauche-configuration of asymmetric sandwich complexes of both cobalt atoms.
Original Russian Text Copyright ? 2005 by T. M. Polyanskaya, V. V. Volkov, and M. K. Drozdova
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Translated from Zhurnal Strukturnoi Khimii, Vol. 46, No. 4, pp.730–740, July–August, 2005. 相似文献
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使用SAC/SAC-CI和D95++, 6-311++g, 6-311++g**及D95(d)基组, 分别对BF分子的基态X1Σ+、第一简并激发态A1Π和第二激发态B1Σ+的平衡结构和谐振频率进行优化计算. 对所有计算结果进行比较, 得出6-311++g**基组为最优基组. 运用6-311++g**基组和SAC方法对基态X1Σ+, SAC-CI方法对激发态A1Π和B1Σ+进行单点能扫描计算, 并用正规方程组拟合Murrell-Sorbie函数, 得到相应电子态的势能函数解析式, 由得到的势能函数计算了与X1Σ+, A1Π和B1Σ+态相对应的光谱常数, 结果与实验数据较为一致. 相似文献
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Nanthawat Wannarit Viwat Hahnvajanawong Chaveng Pakawatchai Sujittra Youngme 《Transition Metal Chemistry》2012,37(1):79-84
Two multiple-layer heterometallic MnII–AgI coordination polymers, {MnII(ampyz)(H2O)[Ag2I(CN)3][AgI(CN)2]·ampyz}
n
(1) and {[MnII(benzim)2[AgI(CN)2]2][(benzim)AgI(CN)]·H2O}
n
(2) where ampyz = 2-aminopyrazine and benzim = benzimidazole, have been prepared and structurally characterized. Compound 1 reveals a multiple-layer two-dimensional network with strong hexanuclear argentophilic interactions leading to an infinite
three-dimensional framework. Compound 2 has an unprecedented double-layer two-dimensional squared grid-type network with (4,4) topology through AgI···AgI and π–π interactions between two adjacent squared layers. These double-layer networks of 2 are linked to others by π–π interactions, leading to a three-dimensional framework. 相似文献
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V. V. Sharutin V. S. Senchurin N. N. Klepikov O. K. Sharutina 《Russian Journal of Inorganic Chemistry》2009,54(2):232-238
Mercury complexes [Ph3AlkP]2+[Hg2I6]2− and [Ph3AlkP]2+[Hg4I10]2− (R = Me, Et, Pr, iso-Pr, Bu, iso-Bu) are synthesized by the reactions of triphenylalkylphosphonium Ph3AlkPI with mercury iodide in acetone with the mole ratio 1: 1 and 1: 2, respectively. According to X-ray diffraction data,
the phosphorus atom in the cations of the [Ph3(iso-Pr)P]2+[Hg2I6]2−, [Ph3BuP]2+[Hg2I6]2−, and [Ph3(iso-Pr)P]2+[Hg4I10]2− complexes has a distorted tetrahedral coordination. The CPC bond angles and P-C bond lengths vary within 107.3(4)°-112.0(4)°
and 1.774(8)-1.827(7) ?. In the [Hg2I6]2− centrosymmetric binuclear anions, the mercury atoms of tetrahedral coordination lie in two near-perpendicular Hg2I6planes. Hg4I4 eight-membered cycles of the [Hg4I10]2− tetranuclear anion are joined into polymeric chains through Hg … I coordination bonds (3.334, 3.681 &OA) due to which Hg
atoms have a trigonal bipyramidal coordination.
Original Russian Text ? V.V. Sharutin, V.S. Senchurin, N.N. Klepikov, O.K. Sharutina, 2009, published in Zhurnal Neorganicheskoi
Khimii, 2009, Vol. 54, No. 2, pp. 267–273. 相似文献