The synthesis of borazines and derivates

Bu çalışmada, borazin $(B_3N_3H_6)$ sodyum borhidrür $(NaBH_4)$ ve Amonyum sülfat j tetraglym çözeltisinde 135 °C'de 2-5 torr basınçta reaksiyonu ile elde edildi. B-trikloroborazin (-BCl-NH-)3 bortriklorür ve amonyum klorürden, klorbenzen ortamında, N-trimetilborazin (-BH-NCH3-)3 ise metilamonyum klorür ve sodyum borhidrürden eter ve THF'Ii ortamda ayrı ayrı sentezlendi. Elde edilen ürünler, IR ve elementel analiz teknikleri kullanılarak karakterize edildi.

Borazin ve türevlerinin sentezi

In this study, borazine $(B_3N_3H_6)$ was obtained from the reaetion of sodium boronhydride $(NaBH_4)$ with ammonium sulfate $[(NH_4)_2SO_4]$ in tetraglyme solution at 135 °C and 2-5 torr of pressure. B-trichloroborazine [(-BCl-NH-)3] was synthesized from the borontrichloride and ammonium chloride. N-trimethylborazine [(-BH-NCH3-)3] was prepared from methylammonium chloride and sodium boronhydride in either ether or THF. Final products were characterized by using the IR and elemental analysis techniques.

PDF

___

1. R. J. Boyd, S. C. Choi, C. C. Hale, Electronic and Structural Properties of Borazine and Related Molecules, Chem. Physics Letters, 112, 2, 136-141, 1984.
2. J. E. Huhey, Inorganic Chemistry, Second Edition, Harper and Row Publishers, New York, 889, 1978.
3. R. Boese, H. M. Andreas, P. Stellberg, Solid State Borazine: Does it deserve to be Entiteled “Inorganic Benzene”?, Chem Ber., 127, 1887-1889, 1994.
4. J. A. Tossel, J. H. Moore, K. McMillan, C. K. Subramaniam, M. A. Coplan, The Electron Momentum Density in the Highest Energy Occupied Molecular Orbital of Borazine, B3N3H6: Evidence for Localization, J.Am. Chem. Soc. 114, 1114-1115, 1992.
5. K. J. L. Paciorek, R. H. Kratzer, Boron Nitride Preceramic Polymer Studies, Ceram. Eng. Sci. Proc., 9, 7-8, 993-1000, 1988.
6. R. T. Paine, C. K. Narula, Synthetic Routes to Boron Nitride, Chem. Rev., 90, 73-91, 1990.
7. E. J. M. Hamilton, S. E. Dolan, C. M. Mann, H. O. Colijn, C. A. McDonald, S. G. Shore, Preparation of Amorphous Boron Nitride and Its Conversion to a Turbostratic, Tubular Form, Science, 260, 659-661, 1993.
8. R. W. Rice, Ceramics from Polymer Pyrolsis, Opportunities and Needs-A Materials Perspective, Ceramic Bulletin, 62, 8, 889-892, 1983.
9. C. K. Narula, R. Schaeffer, R. T. Paine, A. Datye, W. F. Hammetter, Synthesis of Boron Nitride Ceramics from Poly(borazinylamine) Precursors, J. Am. Chem. Soc., 109, 5556-5557, 1987.
10. B. Toury, C. Duriez, D. Cornu, P. Miele, C. Vincent, M. Vaultier, B. Bonnetot, Influence of Molecular Precursor Structure on the Crystallinity of Boron Nitride, J. Solid State Chem., 154, 137-140, 2000.
11. S. Bernard, D. Cornu, P. Miele, C. Vincent, J. Bouix, Pyrolysis of poly[2,4,6-tri(methylamino)borazine] and its convertion into BN fibers, J. Organometallic Chem., 657, 91-97, 2002.
12. J.A.Perdigon-Melon, A. Auroux, D. Cornu, P. Miele, B. Toury, B. Bonnetot, Porous boron nitride supports obtained from molecular precursors. Influence of the precursor formulation and of the thermal treatment on the properties of the BN ceramic, J. Organometallic Chem., 657, 96-106, 2002.
13. C. Duries, E. Framery, B. Toury, P. Toutois, P. Miele, M. Vaultier, B. Bonnetot, Boron nitride thin fibers obtained from a new copolymer borazine-Tri(methylamino)borazine precursor, J. Organometallic Chem., 657, 107-114, 2002.
14. J.G. Kho, K.T. Moon, G. Nouet, P. Ruterana, D.P. Kim, Boron-rich boron nitride films prepared by a single spin-coating process of a polymeric precursor, Thin Solid Films, 389, 78-83, 2001.
15. K. Niedenzu, J. W. Dawson, Boron-Nitrogen Compounds, Springer-Werlag, Berlin, 176p, 1965.
16. C. A. Brown, A. W. Laubengayer, B-Trichloroborazole, J. Am. Chem. Soc., 77, 3699-3700, 1955.
17. T. Wideman, L. G. Sneddon, Convenient Procedures for the Laboratory Preparation of Borazine, Inorg. Chem., 34, 1002-1003, 1995.
18. F. Cheng, B. Toury, S.J. Archibald, J.S. Bradley, Synthesis and structure of [2,4,6-tris[tris(dimethylamino)silylamino]borazine: {[(CH3)2N] 3SiNH}3B3N3H3, J. Organometallic Chem., 657, 71-74, 2002.
19. J. Bai, K. Niedenzu, Convenient Synthesis of Unsymmetrically B-Substituted Borazines, Inorg. Chem., 30, 2955-2956, 1991.
20. S. Allaoud, B. Frange, Antropisomerism in Aryl-Substituted Borazines, Inorg. Chem., 24, 2520-2523, 1985.
21. S. Allaoud, T. Zair, A. Karim, B. Frange, Antropisomerism in o-Aryl-Substituted Borazines, Inorg. Chem., 29, 1447-1449, 1991.