17787-11-0Relevant articles and documents
Nitrogen Tracer Evidence for a Cyclic Azide Species
Phelan, Kieran G.,Stedman, Geoffrey
, p. 299 - 300 (1981)
Tracer experiments on the reaction of 15N-enriched hydrazine with excess of nitrous acid indicate a scrambling of tracer between the nitrogens of equimolar amounts of hydrazine and nitrous acid; a cyclic azide species is suggested as an intermediate.
Highly Electrophilic (Salen)ruthenium(VI) Nitrido Complexes
Man, Wai-Lun,Tang, Tsz-Man,Wong, Tsz-Wing,Lau, Tai-Chu,Peng, Shie-Ming,Wong, Wing-Tak
, p. 478 - 479 (2004)
A series of cationic ruthenium(VI) nitrido species containing the cyclohexyl-bridged salen ligand (L) and its derivatives, [RuVI(N)(L)]+, have been prepared by treatment of [NBun4][RuVI(N)Cl4] with H2L in methanol. The structure of [RuVI(N)(L)](ClO4) (1a) has been determined by X-ray crystallography, d(RuΞN) = 1.592 A. In solvents such as DMF or DMSO, [RuVI(N)(L)]+ undergoes a facile N...N coupling reaction at room temperature to produce N2 and [RuIII(L)(S)2]+ (S = solvent). 1a reacts rapidly with secondary amines to produce diamagnetic RuIV-hydrazido(1-) species, [RuIV(N(H)NR2)(L)(HNR2)]+. The reaction with morpholine is first order in RuVI and second order in morpholine with k(CH3CN, 25 °C) = 2.08 × 106 M-2 s-1. This rate constant is over 4 orders of magnitude larger than that of the corresponding reaction of the electrophilic osmium nitride, trans-[OsVI(N)(tpy)(Cl)2]+, with morpholine. The structure of [Ru(NHNC4H8)(L)(NHC4H8)](PF6)2 has been determined by X-ray crystallography, the Ru-N(hydrazido) distance is 1.940 A, and the Ru-N-N angle is 129.4°. Copyright
Mechanism of the Catalytic Reduction of Nitric Oxide by Ammonia over Cobalt-Amine Complexes in Na-Y Zeolite
Naito, Shuichi,Tamaru, Kenzi
, p. 315 - 319 (2007/10/02)
The mechanism of the NO-NH3 reaction over Co(en)2(NO2)3 complex (en=ethylenediamine), ion exchanged into Na-Y zeolite, was studied extensively and compared with that by the same complex in an aqueous solution, which has been reported previously.At room temperature, the catalytically active species are similar in both media, exhibiting similar reaction mechanisms.Ammonia treatment of the catalyst at 363 K caused the reduction of cobalt cation to CoII with the removal of NO2 groups.The catalytic behavior of this CoII(en)-Y zeolite was compared to that of CoII(NH3)-Y zeolite, prepared by a conventional cation-exchange method.During the No-NH3 reaction, mononitrosyl and dinitrosyl intermediate species were much more stable in Co(NH3) zeolite than Co(en)-Y zeolite, resulting in different reaction orders and kinetic isotope effects.It is demonstrated that a zeolite cavity can be a microreactor, where residual water acts as a solvent to assist the stabilization of the catalytically active species.
Monosubsttituted trlazenido complexes as intermediates in the formation of amido complexes from hafnium hydrides and aryl azldes
Hillhoust, Gregory L.,Bercaw, John E.
, p. 1025 - 1029 (2008/10/08)
(n6 CsMejHfH, l, has been shown to tMCf imuothly with RN2 (R = Ph, p-tclyl) to afford moderately stble triezenido complexes of hafmium, (n-dMHfH(NHNNR), 2. Upon thtrmolysis at 80 °C, 2 loses dinitrogen to form hafnium arylamido compl
