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Keywords crown 6;conformer;normal mode analysis; 冠醚-6;构象;正则模分析;
Abstract The extraction of americium,plutonium and uranium by dicyclohexano 18 crown 6(DCH18C6)/1 octanol from HNO 3 solution and simulated HLLW are studied. 摘要研究了二环己基18 冠6（DCH18C6）-正辛醇从硝酸溶液和模拟高放废液中镅、钚、铀的萃取。
Two amide type double armed crown ethers containing dibenzo 18 crown 6 unit were synthesized and their structures were confirmed by IR, 1HNMR,MS and elemental analysis. 合成了2个含二苯并-18-冠-6单元的酰胺型双臂冠醚化合物,其结构经IR、1HNMR、MS和元素分析确证,该2个化合物都不具有液晶性。
The solubilities of dicyclohexano 18 crown 6(DCH18C6) in aqueous nitric acid solutions and high level liquid wastes (HLLW) are determined by solvent exrtaction method. 用溶剂萃取法测定了二环己基-18-冠-6（DCH18C6）在硝酸和模拟高放废液（HLLW）中的溶解度。
Keywords crown ether;thiosemicarbazide;synthesis; 冠醚;合成;氨基硫脲;
Keywords crown ether;porphine ring;synthesis; 冠醚;卟吩环;合成;
Keywords crown lengthening;aesthetics;gummy smile; 牙冠延长术;美学;露龈笑;
Keywords crown ether;synthsis;semicarbazide; 冠醚;合成;氨基脲;
Keywords Dansyl monoaza 18 crown 6;Cation recognition;Fluorescence;Room temperature phosphorescence; 丹磺酰基单氮杂-18-冠-6;阳离子识别;荧光;室温磷光;
Keywords Methoxy 4 methene coumarin monoaza 18 crown 6;Cation recognition;Association constant;Mechanism; 甲氧基-4-亚甲基）香豆素基-单氮杂-18-冠-6;阳离子识别;稳定常数;机理;
Keywords dibenzo 18 crown 6 unit;amide;double armed crown ether;liquid crystal;synthesis; 关键词二苯并-18-冠-6单元;酰胺;双臂冠醚;液晶;合成;
Keywords Crown Bridge Hypersensitivity Desensitizer; 脱敏剂;牙本质过敏;冠桥修复;
Keywords Crown Fracture Reattachment Dual-curing adhesive sys tem; 冠折;再接修复;双重固化树脂粘接剂;
Keywords Crown lengthening surgery;Gingivectomy;Biologic width; 牙冠延长术;牙龈切除术;生物学宽度;
Keywords Crown ether;synthesis;acylation;semicarbazone.; 冠醚;合成;酰化;缩氨脲;
Keywords Crown ether phthalocyanine LB film Effects of subphase; 单冠醚酞菁;LB膜;亚相诱导;
Keywords crown ether;macrotricycles cryptand;synthesis; 冠醚;大三环穴醚;合成;
SYNTHESES OF THE CONDENSATION POLYMERS OF DIBENZO 18 CROWN 6 WITH SEBACIC ACID 周庆业,鹿秀山,宋谋道,张邦华,郝广杰,张莹, 癸二酸-二苯并-18-冠-6共聚物的合成
Keywords crown ehter;polyphosphoric acid （PPA）;acylation;indanone; 冠醚;多聚磷酸;酰化;茚满酮;
Keywords crown ether;binaphthyl;ethylene chlorhydrin;glycol;synthesis; 冠醚;联萘酚;氯乙醇;甘醇;合成;新方法;