17433-10-2Relevant academic research and scientific papers
Crystal structure of dimerized 1,3-diisopropyl carbodiimide
Gordon, Peter George,Yap, Glenn P. A.,Barry, Sean Thomas
, p. 375 - 378 (2011)
A crystal structure of dimerized 1,3-diisopropyl carbodiimide (CDI) has been obtained and its synthesis through a reaction of CDI with aluminum chloride (AlCl3) has been studied. It possesses space group P21/c, with a = 9.352(5), b = 7.956(4), c = 11.405(6) A and β = 112.465(5)°. It has been observed that this reaction is catalytic with respect to AlCl3. Kinetic studies of the dimer show that its decomposition into CDI is first order with respect to the dimer. The reactivity of the dimer with metals has been investigated through reactions with methyl lithium and alane. The thermal stability of the dimer has been investigated by thermal gravimetric analysis and differential scanning calorimetry.
Tetra(diisopropylcarbodiimide-N)-beryllium-bis-triiodide and 1,3-diisopropyl- 2,4-bis(isopropylimino)-1,3-diazetidine
Neumueller, Bernhard,Dehnicke, Kurt
, p. 1767 - 1771 (2010)
Tetra(diisopropylcarbodiimide-N)-beryllium-bis-triiodide, [Be(i-C 3H7-NCN-i-C3H7)4](I 3)2 (1), was prepared from beryllium powder and iodine in diisopropylcarbodiimide suspension to give red single crystals. Compound 1 catalyzes the cyclodimerization of diisopropylcarbodiimide forming 1,3-diisopropyl-2,4-bis(isopropylimino)- 1,3-diazetidine (2), which can be isolated as colourless single crystals. 1 and 2 were characterized by X-ray diffration and IR spectroscopy. Compound 1 crystallizes tetragonally in the space group P4 21c with two formula units per unit cell. Lattice dimensions at 193(2) K: a = b = 1292.2(1), c = 1411.2(2) pm, R 1 = 0.0497. The structure of 1 consists of distorted tetrahedral dications [Be(i-C3H7-NCN-i- C3H 7)4]2+ with site symmetry 4 and triiodide ions with site symmetry 2. Compound 2: Space group P21/c, Z = 2, lattice dimensions at 100(2) K: a = 935.2(1), b = 795.5(1), c = 1141.0(1) pm, β = 112.54(1)°, R1 = 0.0304. The structure of 2 forms centrosymmetric molecules with symmetry Ci and planar four-membered C2N2 rings.
