The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《The crystal structure of SbCl5.HCON(CH3)2》. Authors are Brun, Lars; Branden, Carl Ivar.The article about the compound:Bis(2,2,6,6-tetramethyl-3,5-heptanedionato)nickel(II)cas:14481-08-4,SMILESS:CC(C)(C1=O[Ni+2]2(O=C(C(C)(C)C)[CH-]1)O=C([CH-]C(C(C)(C)C)=O2)C(C)(C)C)C).Product Details of 14481-08-4. Through the article, more information about this compound (cas:14481-08-4) is conveyed.
The crystal structure of SbCl5.HCON-(CH3)2 has been determined from 3-dimensional x-ray data. The crystals are monoclinic, space group P21/n, with Z = 4. Cell dimensions are, a 9.706, b 13.520, c 8.760 A., β 91° 51′. The at. parameters were refined by the method of least sqs. The structure is built up from discrete SbCl5.HCON(CH3)2 mols. The Sb atom is octahedrally coordinated by 5 Cl atoms and the carbonyl O atom of N,N-dimethylformamide. Changes in the configurations and dimensions from that of the free acceptor and donor mols. are briefly discussed.
Although many compounds look similar to this compound(14481-08-4)Product Details of 14481-08-4, numerous studies have shown that this compound(SMILES:CC(C)(C1=O[Ni+2]2(O=C(C(C)(C)C)[CH-]1)O=C([CH-]C(C(C)(C)C)=O2)C(C)(C)C)C), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics