硝酸鋅與四種α-氨基酸配合物的恒容燃燒能測定

Ten solid complexes of zinc nitrate with L-α-leucine(Leu), L-α-valine(Val), L-α-tryptophan(Try) andL-α-threonine(Thr) were prepared in water. The compositions of these complexes are determined by chemicalanalysis and elemental analysis, which are identified as Zn (Leu) (NO3) 2 @ 2H2O (A), Zn (Leu)2 (NO3)2 @ H2O (B),Zn(Val) (NO3)2 @ 2H2O(C), Zn(Val) 2(NO3)2 @ H2O(D), Zn(Val) 3(NO3) 2 @ H2O(E), Zn(Try) (NO3)2 @ 2H2O(F), Zn(Try)2(NO3)2 @ H2O(G), Zn(Thr) (NO3)2 @ 2H2O(H), Zn(Thr) 2(NO3)2 @ H2O(I) and Zn(Thr) 3(NO3)@ H2O(J) . The constant-volume combustion energies of the complexes, Δc U(complex), were determined by aprecise rotating bomb calorimeter at 298.15K. Standard enthalpies of combustion, ΔcH-m(complex, s, 298. 15K),and standard enthalpies of formation, ΔfH-m (complex, s, 298. 15K) for these complexes were calculated as(4523.22 ± 2.08), (7208.86 ± 4.28), (3442.21 ± 1.85), (5971.21 ±3.32), (9007.26 ± 4.24),(5802.35±2.14), (10891.58±3.01), (2147.40±1.28), (4120.83±0.99), (6444.68±3.85)kJ@mol-1and (615.67±2.27), (1863.16±4.60), (1017.34±2.00), (1742.93±3.61), (2245.70±4.73),(1161.18±2.61), (1829.71±4.20), (1632.82±1.43), (1885.55±1.50), (2770. 25 ± 4. 21) kJ @ mol-1,respectively.

作 者： 謝鋼 楊旭武 陳三平 高勝利 史啟禎   作者單位： 西北大學(xué)化學(xué)系,陜西省物理無機(jī)化學(xué)重點實驗室,西安,710069  刊 名： 無機(jī)化學(xué)學(xué)報  ISTIC SCI PKU 英文刊名： CHINESE JOURNAL OF INORGANIC CHEMISTRY  年，卷(期)： 2003 19(3)  分類號： O614  關(guān)鍵詞： 硝酸鋅   α-氨基酸   配合物   標(biāo)準(zhǔn)生成焓   zinc nitrate α-amino acid complex standard enthalpy of formation  

【硝酸鋅與四種α-氨基酸配合物的恒容燃燒能測定】相關(guān)文章：

氯代苯基卟啉-氨基酸及鋅配合物的合成和光譜性質(zhì)04-27

熔融法合成甘氨酸鋅配合物及表征04-27

新型橋連雙鋅配合物的合成和結(jié)構(gòu)04-29

過渡金屬氨基酸席夫堿配合物的合成04-28

鋅與煙酰胺苦味酸根配合物的合成與晶體結(jié)構(gòu)04-29

生物質(zhì)燃燒顆粒物有機(jī)示蹤化合物的測定和應(yīng)用04-28

流動注射分光光度法測定海水中痕量鋅-5-Br-PADAP-Zn2+配合物法04-28

蔗糖能燃燒嗎?10-11

蔬菜中硝酸鹽和亞硝酸鹽的不同提取方法及含量測定04-27

甘肅鼢鼠骨骼19種氨基酸含量的測定04-26