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- W2020184296 abstract "[Na-15-crown-5] 2 [ZrF 2 Cl 4 ] has been prepared by the reaction of the amidinato complex [Ph—C(NSiMe 3 ) 2 ZrCl 3 ]2 with sodium fluoride in acetonitrile suspension, as well as by the reaction of ZrCl 4 in acetonitrile, both in the presence of 15-crown-5. On an analogous route (PPh 4 ) 2 [ZrCl 6 ] · 2 CH 2 Cl 2 has been prepared by the reaction of [Ph—C(NSiMe 3 ) 2 ZrCl 3 ] 2 with PPh 4 Cl in CH 2 Cl 2 solution, as well as by the reaction of ZrCl 4 with PPh 4 Cl in CH 2 Cl 2 . The compounds are characterized by their IR spectra and by crystal structure determinations. [Na-15-crown-5] 2 [ZrF 2 Cl 4 ]: Space group Ρ2 1 /a, Z = 4, 6589 observed independent reflexions, R = 0.069. Lattice dimensions at 20°C: a = 1705.0(9), b = 1092.4(6), c = 1906.5(10) pm, β = 113.14(3)°. [Na-15-crown-5] 2 [ZrF 2 Cl 4 ] forms ion triples, in which both sodium ions are sevencoordinate by five oxygen atoms of the crown ether molecules, as well as by a fluorine and a chlorine atom of the cis-[ZrF 2 Cl 4 ] 2- unit. (PPh 4 ) 2 [ZrCl 6 ] · 2 CH 2 Cl 2 : Space group P1̄, Z = 1, 4831 observed independent reflexions, R = 0.041. Lattice dimensions at 20°C: a = 1030.1(5), b = 1124.8(6), c = 1245.6(6) pm, α = 70.81(3), β = 80.61(4), γ = 80.39(4)°. The compound has an ionic structure with ZrCl 6 2- ions of symmetry C i ." @default.
- W2020184296 created "2016-06-24" @default.
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- W2020184296 date "1989-10-01" @default.
- W2020184296 modified "2023-09-26" @default.
- W2020184296 title "[Na-15-Krone-5]<sub>2</sub>[ZrF<sub>2</sub>Cl<sub>4</sub>] und (PPh4)<sub>2</sub>[ZrCl<sub>6</sub>] · 2 CH<sub>2</sub>Cl<sub>2</sub>; Synthesen, IR-Spektren und Kristallstrukturen / [Na-15-Crown-5]<sub>2</sub>[ZrF<sub>2</sub>Cl<sub>4</sub>] and (PPh<sub>4</sub>)<sub>2</sub>[ZrCl<sub>6</sub>] · 2 CH<sub>2</sub>Cl<sub>2</sub>; Syntheses, IR Spectra, and Crystal Structures" @default.
- W2020184296 doi "https://doi.org/10.1515/znb-1989-1001" @default.
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