38704-89-1

Upstream product

• 68267-83-4 1,4-dimethyl-1,4,5,6,7-pentahydro-1,2,3,4-tetrazepine 
• 106376-68-5 N,N'-Bis-(2,2-dimethyl-propyl)-N,N'-dimethyl-hydrazine 
• 49840-60-0 Dimethyl-piperidin-1-yl-amine 
• 60512-68-7 N,N'-Diethyl-N,N'-dimethyl-hydrazine 

Downstream Products

• 23337-93-1 N,N'-diethyl-N,N'-dimethyl-hydrazine 
• 49840-60-0 dimethyl-piperidin-1-yl-amine 
• 68970-09-2 N,N'-Bis-(2,2-dimethyl-propyl)-N,N'-dimethyl-hydrazine 
• 63-36-5 salicylate 

Relevant academic research and scientific papers

Kinetic Effects of an Unusually Large Neutral to Radical Cation Geometry Change. Slow Electron-Transfer Reactions between Alkylhydrazines

High pressure mass spectrometry was used to measure the kinetics for electron transfer between 54 pairs of tetraalkylhydrazines containing acyclic and f-ve- to seven-membered cyclic and bicyclic rings.Rate constants for electron transfer vary between 18 and 0.03 x 10-11 cm3molecule-1s-1 at 550 K.Variable-temeprature mesuremeants were made on five pairs over a 77-120 deg range.The (Me2N)2(1+), (EtMeN2)2 pair gave Ea=2.7 kcal/mol.The association energy for (Me2N)2 was measured at ΔH0=-13.0 kcal/mol near room temperature.These data are combined to estimate an energy separation of about 15.7 kcal/mol between associated (Me2N)2(1+)/(EtMeN)2 dimer complex and the transition state for electron transfer.The observed Bronsted α value of about 0.5 suggests a large barrier to electron transfer, and the kinetics suggests that the components largely retain their original structures in the associated complex, but that significant distortion is required to reach the transition-state geometry.The effect of alkyl group changes on the electron-transfer rate and comparison of these data with solution experiments are discussed.

ELECTRONIC STRUCTURES AND THERMOLYSES OF 2-TETRAZENES

The electronic structures and gas phase termolyses of the cyclic 2-tetrazenes 2 and 3 of open chain 1,1,4,4-tetramethyl-2-tetrazene (1) have been studied by photoelectron spectroscopy.While the six-membered ring compound 2 yields 1-methylmethylenamine (6) and nitrogen as fragments, the seven-membered ring compound 3 is contracted to 1,2-dimethylpyrazolidine (11).The acyclic 2-tetrazene 1 prefers disproportionation to 6 and dimethylamine (7).Based on MNDO calculations the ionization potentials of 1 - 3 were assigned to molecular orbitals.Several conformations of 2 and 3 were calculated.Compound 2 shows a rigid boat conformation with equatorial methyl groups, while 3 can occupy several conformations of similar energies.The different thermal decompositions of 1 - 3 are explained.