Synthesis and 1H-, 15N-, 31P-, 183W-Multinuclear Magnetic Resonance Study of the Cyclotriphosphazenes [N3P3(dobp)2(OC5H4N-4)2] and [N3P3(dobp)(OC5H4N-4)4] and Their W(CO)5 Complexes (dobp = 2,2′-dioxybiphenyl)

✍ Scribed by Gabino A. Carriedo; Francisco J. García Alonso; José L. García; Rodrigo J. Carbajo; Fernando López Ortiz

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 269 KB
• Volume: 1999
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/(sici)1099-0682(199906)1999:6<1015::aid-ejic1015>3.0.co;2-x

✦ Synopsis

The reactions of [N 3 P 3 (dobp) 2 Cl 2 ] and [N 3 P 3 (dobp)Cl 4 ] with revealed that the complexation of the N atom of one 4oxypyridine ligand by the W(CO) 5 fragment has a a mixture of HOC 5 H 4 N-4 and K 2 CO 3 in acetone give the cyclotriphosphazenes [N 3 P 3 (dobp) 2 (OC 5 H 4 N-4) 2 ] and [N 3 P 3 -measurable effect on other parts of the phosphazene molecule very far away from the coordination site. The (dobp)(OC 5 H 4 N-4) 4 ], respectively. These compounds react with [W(MeOH)(CO) 5 ] in methanol to give mixtures of the changes observed in δ 183 W have been used to identify the components in mixtures of compounds incorporating polymetallic complexes [N 3 P 3 (dobp) 2 (OC 5 H 4 N-4) 2 {W(CO) 5 } x ] (x = 1, 2) and [N 3 P 3 (dobp)(OC 5 H 4 N-4) 4 {W(CO) 5 } x ] (x = 1-4), different numbers of tungsten atoms in the molecule. The characterization of less sensitive nuclei has been which are unstable in solution, slowly undergoing loss of the pentacarbonyl moiety. A complete characterization by accomplished by means of indirect detection methods. multinuclear 1 H, 15 N, 31 P, 183 W magnetic resonance has probe for assessing structural and bonding effects of the