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Synthesis of La(Ⅲ), Y(Ⅲ) complexes with polyglycol aldehyde-amino acid Schiff base and their high resolution solid state ^(13)C NMR spectra

Synthesis of La (Ⅲ), Y (Ⅲ) complexes with polyglycol aldehyde-amino acid Schiff base and their high resolution solid state ~13C NMR spectra
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摘要 La(Ⅲ) , Y(Ⅲ) complexes with diglycol aldehyde bis-arginine (H2DAAR) and tetraglycol aldehyde bis-lysine (H2TALY) Schiff bases were synthesized. They were characterized and formulated as La( H2DAAR) (NO3)3 ?6H2Oand Y (H2TALY)(NO3)3 ·5H2Oseparately by elemental analyses. The obtained complexes were investigated in detail by high resolution solid state (HRSS) 13C NMR using cross polarization, magic angle spinning (CPMAS) , and total suppression of sidebands (TOSS)techniques. The results are supported by the liquid state 2D-1 H-13 C COSY NMR spectra. Some new information about the splitting peaks of 13C for -CH=N- group and alkene carbon bands, etc. in HRSS 13C NMR spectra are given. La(Ⅲ), Y(Ⅲ) complexes with diglycol aldehyde bis-arginine (H<sub>2</sub>DAAR) and tetraglycol aldehyde bislysine (H<sub>2</sub>TALY) Schiff bases were synthesized. They were characterized and formulated as La(H<sub>2</sub>DAAR) (NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O and Y (H<sub>2</sub>TALY)(NO<sub>3</sub>)<sub>3</sub>·5H<sub>2</sub>O separately by elemental analyses. The obtained complexes were investigated in detail by high resolution solid state (HRSS) <sup>13</sup>C NMR using cross polarization, magic angle spinning (CPMAS), and total suppression of sidebands (TOSS)techniques. The results are supported by the liquid state 2D-<sup>1</sup>H-<sup>13</sup>C COSY NMR spectra. Some new information about the splitting peaks of <sup>13</sup>C for—CH=N—group and alkene carbon bands, etc. in HRSS <sup>13</sup>C NMR spectra are given.
出处 《Science China Chemistry》 SCIE EI CAS 1999年第6期599-604,共6页 中国科学(化学英文版)
基金 Project supported by the National Natural Science Foundation of China (Grant No. 29671026) the Natural Science Foundation of Zhejiang Province (Grant No. 296062) the Laboratory of MRAMP (Grant No. 971502)
关键词 Ln (Ⅲ )complexes with Schiff base high resolution solid STATE 13C NMR liquid STATE 2D-1H-13C COSY NMR CPMAS TOSS. Ln (Ⅲ )complexes with Schiff base, high resolution solid state 13C NMR, liquid state 2D-1H-13C COSY NMR, CPMAS, TOSS.
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