Urea–N,N-dimethylacetamide (1/1)
نویسندگان
چکیده
Urea forms a 1:1 solvate with N,N-dimethyl-acetamide (DMA) [systematic name: diamino-methanal-N,N-dimethyl-acetamide (1/1), C(4)H(9)NO·CH(4)N(2)O] with both mol-ecules positioned on a twofold axis, giving rise to rotational disorder of the DMA mol-ecule. The mol-ecules display a layered structure in which urea mol-ecules form hydrogen-bonded ribbons bounded by mol-ecules of solvent.
منابع مشابه
N,N-Dimethylacetamide–4-iodobenzenesulfonic acid–water (1/1/1)
In the title compound, C(6)H(5)IO(3)S·C(4)H(9)NO·H(2)O, N,N-dimethylacetamide and 4-iodobenzenesulfonic acidmolecules are linked by an intramolecular C-H⋯O hydrogen bond. In the crystal structure, inter-molecular O-H⋯O, O-H⋯I and C-H⋯O hydrogen bonds link the mol-ecules.
متن کاملBenzene-1,4-dicarboxylic acid–N,N-dimethylacetamide (1/2)
The asymmetric unit of title compound, C(8)H(6)O(4)·2C(4)H(9)NO, contains one half-mol-ecule (an inversion centre in P21/n generates the other half of the molecule) of terephthalic acid (TA) and one mol-ecule of N,N-dimethyl-acetamide (DMAC). The DMAC mol-ecules are linked to TA by strong O-H⋯O hydrogen bonds.
متن کاملN,N′-Bis(4-methylphenyl)naphthalene-1,4-dicarboxamide N,N-dimethylacetamide disolvate
The title compound, C(26)H(22)N(2)O(2)·2C(4)H(9)NO, crystallizes in an anti C=O orientation. The two amide groups are approximately perpendicular to the naphthalene ring system [dihedral angles = 88.89 (1) and 89.08 (1)°]. Each of the dimethyl-acetamide solvent mol-ecules are disordered over two positions, with occupancies of 0.655 (12):0.345 (12) and 0.531 (13):0.469 (13). The crystal packing ...
متن کامل2-Cyano-N,N-dimethylacetamide
In the crystal structure of the title compound, C(5)H(8)N(2)O, mol-ecules are linked by weak C-H⋯O hydrogen bonds, forming a three-dimensional network.
متن کاملAn Efficient One Pot Procedure for Preparation of Symmetrical N,N'-Disubstituted Urea from Aromatic and Aliphatic Amines and Urea under Microwave Irradiation
A phosgene-free synthesis of symmetrical N,N'-disubstituted urea by the reaction of aromatic and aliphatic primary amines and urea promoted by microwave irradiation in the presence of a suitable energy-transfer solvent such as N-N-dimethylacetamide is described.
متن کامل