Boronation of the water soluble phosphine PTA (PTA= 1,3,5-triaza-7-phosphaadamantane) in dry THF easily affords the N-boronated adduct N-B-PTABH(3) which represents the first N-coordinated adduct of this popular water soluble phosphine (N-B-PTABH3= 1-boranyl-1,3,5-triaza-7-phosphadamantane). In situ P-31 NMR spectroscopy suggests the Occurrence of a stepwise boronation resulting in the addition of as many as four equivalents of BH3 to PTA to give the polyboranyl species N-x, P-y-B-PTA(BH3)((x+y)) (x= 1-3, y= 0,1). Hydrolysis of the monoboranyl adduct occurs slowly in the presence of water yielding back PTA and boric acid, H3BO3. (c) 2006 Elsevier B.V. All rights reserved.
Borane adducts of the water soluble phosphine PTA (PTA=1,3,5-triaza-7-phosphaadamantane) / S. Bolaño, A. Albinati, J. Bravo, L. Gonsalvi, M. Peruzzini. - In: INORGANIC CHEMISTRY COMMUNICATIONS. - ISSN 1387-7003. - 9:4(2006), pp. 360-363.
Borane adducts of the water soluble phosphine PTA (PTA=1,3,5-triaza-7-phosphaadamantane)
A. AlbinatiSecondo
;
2006
Abstract
Boronation of the water soluble phosphine PTA (PTA= 1,3,5-triaza-7-phosphaadamantane) in dry THF easily affords the N-boronated adduct N-B-PTABH(3) which represents the first N-coordinated adduct of this popular water soluble phosphine (N-B-PTABH3= 1-boranyl-1,3,5-triaza-7-phosphadamantane). In situ P-31 NMR spectroscopy suggests the Occurrence of a stepwise boronation resulting in the addition of as many as four equivalents of BH3 to PTA to give the polyboranyl species N-x, P-y-B-PTA(BH3)((x+y)) (x= 1-3, y= 0,1). Hydrolysis of the monoboranyl adduct occurs slowly in the presence of water yielding back PTA and boric acid, H3BO3. (c) 2006 Elsevier B.V. All rights reserved.
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