K. Gholivand, Z. Shariatinia, M. Pourayoubi
Feb 13, 2006
Citations
0
Influential Citations
55
Citations
Journal
Polyhedron
Abstract
Some new phosphoramidates with formula 4-F-C6H4C(O)N(H)P(O)X2 ,X = NC 4H8 (1), NC5H10 (2), 4-CH3-NC5H9 (3), NC4H8 O( 4), NC6H12 (5), N(CH2CH3)2 (6), N(CH2CH2CH3)2 (7) were synthesized. The reaction of compound 2 with dimethyltin(IV) dichloride leads to an octahedral organotin(IV) complex, SnCl2(CH3)2[4-F-C6H4C(O)N(H)P(O)(NC5H10)2]2 (8) with equal ligands in trans positions. These compounds were characterized by IR, 1 H, 13 C, 31 P, 119 Sn NMR, mass spectroscopy and elemental analysis. The structures have been determined for compounds 1, 2, 4, 5 and 8. Compound 2 exists as four symmetrically independent molecules in the crystalline lattice. Compounds 1, 4 and 5 form dimmers via intermolecular –P@O ��� H–N– hydrogen bonds that in 1 is centrosymmetric. In compound 2, two dimmers were formed; each of them was produced between two adjacent independent molecules. In compounds 1, 2, 3, 4 and 8, containing five- and six-membered ring amine groups, 3 J(P,Caliphatic )> 2 J(P,Caliphatic). Compound 5 with seven-membered ring amine, similar to compounds 6 and 7 with acyclic aliphatic amines, shows that 2 J(P,Caliphatic )> 3 J(P,Caliphatic). Mass spectra of these compounds indicate the 4-F-C6H4CO + and 4-F-C6H4CN + fragments.