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I. A. Baidina S. A. Gromilov S. P. Khranenko A. D. Vasiliev A. V. Belyaev 《Journal of Structural Chemistry》2001,42(1):120-125
The reaction products of palladium(II) nitration with sodium nitrite in the presence of rubidium salts are described. The crystal structure of rubidium dinitrodichloropalladoate(II) — trans-Rb2[Pd(NO2)2Cl2] — has been studied (KUMA automatic diffractometer, MoK radiation, graphite monochromator, /2 scan mode for 2 < 30°, 758 experimental reflections, R = 0.030; R = 0.023 for I>2(I)). Crystal data: a = 15.123(3), b = 7.750(2), c = 7.776(2) , V = 911.4(4) 3, space group Cmca, Z = 4, d
calc = 3.209 g/cm3. The structure consists of [Pd(NO2)2Cl2]2– complex anions and Rb+ cations. The planar square coordination of the Pd atom is completed to distorted octahedral by the chlorine atoms of the neighboring complexes at Pd...Cl distances of 3.18 . Chains of complexes with alternating orientations are formed. The geometrical characteristics of the complex anions, the coordination polyhedra of the cations, and the heavy atom sublattice are analyzed. The crystal structure of Na2[Pd(NO2)4] has been refined, and refinement data are given. 相似文献
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Single crystals of trans-[Pd(NO3)2(H2O)2] were obtained, and the crystal structure of this complex, previously obtained for polycrystals, was refined. Crystal data (BRUKER X8APEX diffractometer): a = 4.9973(7) Å, b = 10.5982(14) Å, c = 11.7008(17) Å, V = 619.70(15) Å3, space group Pbca, Z = 4, d calc = 2.856 g/cm3. The structure is composed of neutral complexes with a trans configuration. The square plane environment of the Pd atom is formed by four oxygen atoms (Pd-O(NO3) 1.999(5) Å, Pd-O(H2O) 2.030(5) Å) and completed to a distorted bipyramid by two intramolecular contacts (Pd…O(NO3) 2.926 Å). The shortest hydrogen bonds are O…H 2.72 Å. 相似文献
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Pamela M. Bailey Elizabeth A. Kelley Peter M. Maitlis 《Journal of organometallic chemistry》1978,144(3):C52-C56
An X-ray crystal structure determination of [Pd3(2-methylallyl)2Cl4] shows it to be centrosymmetric with a rippled near-planar arrangement of PdCl2PdCl2Pd, the terminal Pd atoms being η3-bonded to the 2-methylallyl ligand. 相似文献
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Crystalline NO2[Fe(NO3)4] was obtained by dehydration of a solution of Fe(NO3)3 in 100 % HNO3 and subsequent sublimation. NO2[Zr(NO3)5] was synthesized by reaction of ZrCl4 with N2O5 followed by sublimation in vacuum. X‐ray single crystal structure determination showed both compounds to consist of nitronium cations, NO2+, and nitratometalate anions. N‐O distances in the linear NO2+ cations are in the range of 1.08—1.13Å. In both [Fe(NO3)4]− and [Zr(NO3)5]− anions, all nitrate groups are coordinated bidentately with average M‐O distances 2.134 and 2.293Å, respectively. Taking into account the position of N atoms around the M atoms, the arrangement of nitrate groups can be described as tetrahedral for the Fe complex and trigonal‐bipyramidal for the Zr complex. There are four shortest N(nitronium)····O(nitrate group) contacts with average distances of 2.705 and 2.726Å in NO2[Fe(NO3)4] and 2.749Å in NO2[Zr(NO3)5]. Nitronium pentanitratohafnate is isotypic to the zirconium complex. 相似文献
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[Cu(NH3)2](NO3)2 ( I ) and [Cu(NH3](NO3)2 ( II ) were synthesized by interaction of molten NH4NO3 with [Cu(NH3)4](NO3)2 and Cu(NO3)2 · 3 H2O, respectively, at 180 to 195°C for 24 hr. According to X-Ray single crystal analysis, I is orthorhombic (sp. gr. Pbca) with a = 5.678(1), b = 9.765(2), c = 11.596(2) Å, Z = 4, R = 0.060; II is monoclinic (sp. gr. P21/c) with a = 6.670(1), b = 8.658(2), c = 9.661(2) Å, β = 101.78(2)°, Z = 4, R = 0.027. In both structures, the nearest coordination environment of Cu is a slightly distorted square formed by N (from NH3) and O atoms (from NO3 groups). The structure of I consists of centrosymmetrical [Cu(NH3)2](NO3)2 molecules linked by hydrogen bonds. The Cu? N and Cu? O distances are 1.98 and 2.01 Å, respectively. In II , the Cu? N distance is 1.95 Å, the Cu? O distances are 1.96, 2.02, and 2.03 Å. The [CuO3NH3] squares are connected by NO3 bridges into zigzag chains, which are linked into layers by longer Cu? O interactions (2.31 Å). Obviously, the layers are additionally strengthened and held together by hydrogen bonds. 相似文献
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A. V. Zadesenets S. P. Khranenko Yu. V. Shubin I. A. Baidina S. V. Korenev 《Russian Journal of Coordination Chemistry》2006,32(5):374-379
Complex salts, i.e., tetraamminepalladium perrhenate (I) and permanganate (II), are synthesized and studied by physicochemical methods. Their crystal structures are determined and thermal analysis is performed. The products formed in thermolysis of I and II carried out in the atmosphere of helium and hydrogen are studied. The Pd0.33Re0.67 solid solution based on Re is shown to form under particular temperature conditions in the atmosphere of hydrogen. 相似文献