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Standard Enthalpies of Formation for Solid Complexes of Chromium Chloride with L‐α ‐ Amino Acids
Author(s) -
Yang XuWu,
Chen SanPing,
Gao ShengLi,
Shi QjZhen
Publication year - 2002
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20020201015
Subject(s) - chemistry , elemental analysis , standard enthalpy change of formation , standard enthalpy of formation , chromium , chloride , amino acid , medicinal chemistry , nuclear chemistry , inorganic chemistry , organic chemistry , biochemistry
The solid complexes of Cr(AA) 2 Cl 3 · n H 2 O of CrCl 3 , with L‐α ‐amino acids (AA= Val, Leu, Thr, Met, Arg, Phe, Try and His) have been prepared in 95% EtOH medium, and characterized structurally by elemental analysis, chemical analysis, IR spectra and TG‐DTG. The constant‐volume combustion energies of the complexes have been determined by RBC‐II type rotating‐bomb calorimeter. The standard enthalpies of formation of the complexes have been calculated as well, which are (‐2543.16 ± 3.71) (Val), ( −2561.32 ± 4.06) (Leu), (‐2284.02 ± 2.95) (Thr), (‐1418.77 ± 4.60) (Met), (‐3218.91 ± 4.67) (Arg), (‐2643.90 ± 5.02) (Phe), (‐1707.18 ± 3.23) (Try) and (‐2838.05 ± 3.45) (His) kJ/mol, respectively.