Novel tertiary branched tetra-amines, quaternary branched penta-amines, linear penta-amines and linear hexa-amines were distributed as the major polyamines in six obligately extremely thermophilic eubacteria belonging to Thermoleophilum, Bacillus or Hydrogenobacter. The major polyamine of Thermoleophilum album and Thermoleophilum minutum was identified as a quaternary branched penta-amine, 4,4-...

The temperature dependence of the chlorine NQR spin-lattice relaxation time T ^ w a s observed for trimethylsulfonium hexachlorometallates(IV), [(CH3)3S]2MC16 (M = Pt, Sn), trimethylammonium hexachlorostannate(IV), [(CH3)3NH]2SnCl6, and tetramethylphosphonium hexachlorostannate(IV), [(CH3)4P]2SnCl6. The quadrupolar relaxation in [(CH3)3NH]2SnCl6 and [(CH3)4P]2SnCl6 can be described by the usual...

As a consequence of the combination of the formation and decomposition reactions of NaMg(NH(2)BH(3))(3), the 3NH(3)BH(3)/NaMgH(3) mixture can rapidly release ca. 10 wt.% of hydrogen at 80 °C within 2 min.

هدف از پژوهش حاضر، سنتز، ترکیب متوکسی آمیدو زانتات MAX و نشان‌دارسازی آن با رادیونوکلیید mTc99 به عنوان یک عامل تشخیصی نوین جهت تصویربرداری توموگرافی رایانه‌ای تک فوتونی (SPECT) می­‌باشد. لیگاند فوق واکنش بین دو ماده‌ی کلرواستامید (Chloroacetamide) مشتقات (Xanthate) نسبت‌های مولی معین سنتز شد. سپس فرایند طریق دوشیدن ژنراتور (mTc99Mo/99) روش مستقیم انجام گرفت. این ترتیب که قلع کلرید کاهنده مورد ...

The synthesis and characterization by single crystal x-ray structure analysis, manganometric titration, valence sum calculations, thermogravimetric analysis, and IR spectroscopic studies of (HN(CH2CH2)3NH)2(Na(H2O)2)(HV10O28)*2H2O (1) and (H3N-4-C5H4N)2(NH4)4(V10O28)*xH2O (2) has been described. The structure of 1 consists of alternating layers composed of two-dimensional arrays of decavanadate...

The mechanism for ClO + NH2 has been investigated by ab initio molecular orbital and transition-state theory calculations. The species involved have been optimized at the B3LYP/6-311+G(3df,2p) level and their energies have been refined by single-point calculations with the modified Gaussian-2 method, G2M(CC2). Ten stable isomers have been located and a detailed potential energy diagram is provi...

Molecular orbital calculations were performed for the six saturated alkylamines (CH3NH2, (CH3)2NH, (CH3)3N, CH3CH2NH2, (CH3)2CHNH2, (CH3)3CNH2), their protonated cations (CH3NH3 , (CH3)2NH2 , (CH3)3NH , CH3CH2NH3 , (CH3)2CHNH3 , (CH3)3CNH3 ), and (CH3)4N + using the Hartree-Fock, second-order Møller-Plesset, and density functional theory methods with the 6-311+G(d,p) basis set. Protonation leng...