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• W2012482488 abstract "Abstract The crystal and molecular structures of Ni(NO2)2dppe·CH2Cl2 and [Ni(ONO)(NO)dppe]2 (dppe = Ph2PCH2CH2PPh2) have been determined by X-ray crystallography. Ni(NO2)2dppe crystallizes in the monoclinic space group P21/c with four molecules in a unit cell of dimensions α = 11.880(6) A, b = 15.191(8) A, c = 17.162(6) A and β = 108.79(4)°. The structure consists of discrete Ni(NO2)2dppe molecules well separated from solvent molecules. The square planar geometry about nickel is defined by the two phosphorus and two nitrogen atoms to which it is bonded. The P(1)NiP(2) angle of the chelating dppe is 86.3(1)° and the N(1)NiN(2) angle of the N-bonded nitro groups is 88.5(4)°. The nitro groups are approximately perpendicular to the square plane about nickel. Important interatomic distances are NiP(1) = 2.178(3) A, NiP(2) = 2.182(4) A, Ni-N(1) = 1.864(12) A, and Ni-N(2) = 1.916(10) A. [Ni(ONO)(NO)dppe]2 crystallizes in the monoclinic space group P21/n with two molecules in a unit cell of dimensions α = 15.528(11) A, b = 11.897(7) A, c = 15.023(13) A, and β = 110.71(5)°. The structure consists of dimers bridged by two dppe ligands which form a ten-membered ring with the nickel atoms. The nickel atoms have distorted tetrahedral geometry with P(1)NiP(2) = 112.4(1) and O(2)NiN(1) = 140.0(4)°. The NO2 group is bonded to nickel through one oxygen atom (NiO(N), 2.123(12) A. The NiNO angle of the nitrosyl group is 153.4(8)°. Important interatomic distances are NiP(1) = 2.271(4) A. Ni-P(2) = 2.251(3) A, and NiN(O) = 1.664(9) A. While the crystal structure shows this complex to be a dimer in the solid state, molecular weight determinations indicate that it is monomeric in solution." @default.
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• W2012482488 date "1983-01-01" @default.
• W2012482488 modified "2023-09-25" @default.
• W2012482488 title "Oxygen atom transfer reactions. 3. The crystal structures of Ni(NO2)2dppe and [Ni(ONO)(NO)dppe]2" @default.
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• W2012482488 doi "https://doi.org/10.1016/s0020-1693(00)83658-0" @default.
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