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- W2051268514 abstract "Rotes Li3Ni4(NH2)11·NH3 kristallisiert bei Raumtemperatur aus flüssigem NH3 in druckfesten Glasapparaturen bei der Umsetzung von LiNO3 bzw. LiCl oder LiBr mit Na2Ni(NH2)4. Analog entstehen orangefarbene Kristalle von Cs2Ni(NH2)4·NH3 aus CsNH2 und Ni(NH2)2. Röntgenographische Untersuchungen ergaben: Li3Ni4(NH2)11·NH3: Pna21; Z = 4; a = 16,344(3) Å; b = 12,310(2) Å; c = 8,113(2) Å; ρ(rö) = 1, 942 g cm−3; Z(Fo2 ⩾ 3σ(o2)) = 944; Z(Variable) = 157;R/Rw 0,059/0,072. Cs2Ni(NH2)4·NH3: P21/c; Z = 4; a = 9,553(3) Å; b = 8,734(3) Å; c = 14, 243(3) Å; β = 129,96(3)°; prö) = 2960 g cm−3; Z(Fo2 ⩾ 3σ(Fo2)) = 1488; Z(Variable) = 73; R/Rw = 0,045/0,052. Darstellung, thermische Eigenschaften, IR-spektroskopisches Verhalten und Kristallstrukturen der Verbindungen werden mitgeteilt und vergleichend mit Ni(NH2)2 sowie weiteren Amidoniccolaten(II) diskutiert. The red substance Li3Ni4(NH2)11·NH3 crystallizes from liquid ammonia at room temperature when LiNO3, LiCl or LiBr reacts with Na2Ni(NH2)4 in a pressure-resistant glass vessel. A similar reaction between CsNH2 and Ni(NH2)2 gives orange crystals of Cs2Ni(NH2)4 ·NH3. X-ray investigations gave the following data: Li3Ni4(NH2)11·NH3: Pna21; fZ = 4; a = 16.344(3) Å; b = 12.310(2) Å; c = 8.113(2) Å; p(X-ray) = 1.942 g cm−3; N(Fo2 ⩾ 3σ(Fo2) = 944; N(Variable) = 157; R/Rw = 0.059/0.072. Cs2Ni(NH2)4 · NH3: P21/c; Z = 4; a =9.553(3) Å; b = 8.734(3) Å; c = 14.243(3) Å; β = 129.96(3)°; p(X-ray = 2.960 g cm−3;N(Fo2⩾ 3σ(Fo2) = 1488; N(Variable) = 73; R/Rw = 0.045/0.052. The synthesis, thermal behaviour, IR spectroscopic characteristics and crystal structures of the compounds are reported and comparisons made with Ni(NH2)2 and other amidonickel(II) compounds." @default.
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- W2051268514 date "1991-12-01" @default.
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- W2051268514 title "Substitutionsvarianten von Nickel(II) amid: ternäre amidoniccolate mit Lithium und Caesium Li3Ni4(NH2)11·NH3 und Cs2Ni(NH2)4·NH3" @default.
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- W2051268514 doi "https://doi.org/10.1016/0925-8388(91)90074-6" @default.
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