羧酸及其盐红外光谱特性的研究_回瑞华.pdf

Journal of Anshan Teachers College 2 001-03, 3 (1):9 5-9 8 羧酸及其盐红外光谱特性的研究 回瑞华　　关崇新　　侯冬岩 (鞍山师范学院分析测试研究中心, 辽宁鞍山 114005) 　:研究了羧酸及其盐 特征红外光谱.讨论了红外光谱特性随化学结构变化 关系.进而从红外光 谱与分子结构 关系上论证了羧酸及其盐结构上 差异性, 并给出了羧酸盐结构 通式. :羧酸;羧酸盐;红外光谱特性;结构通式 :O652.4 　　:A 　　:1008-2441(2001)01-0095-04 Study on IR Characteristics of Carboxylic Acid and Their Salts HUI Rui-hua 　　GUAN Chong-xin　　HOU Dong-yan (A naly tical and Testing R esearch Cen ter, A nshan Teachers College, L iaon ing A nshan 114005, Ch ina ) Abstract:The IR s ectra of carboxylic acids and their salts were studied and their main IR bands were assigned.The changing rules with the chage of chemical structure w ere discussed by some exam les.The conclusion w as further confirmed that the obvious difference in the IR s ectra-molecular structure relationshi betw een the carboxylic acids and their salts.The gener- al molecular formula of carboxylic salts w as ro osed. Key words:Carboxylic acids;Carboxylic salts;IR characteristics;General molecular formula ( COOH)., . (RCOOH ), (ArCOOH). 、、, . , .2%; [ 1] ;. . , O O R COH R C OM , .[2-4] C O 1.245A゜ (0.1245nm ) C O 1.22A゜ (0.122nm ); C OH 1.31A゜ (0.131nm ) 1.43A゜ (0.143mm), ; C O , 1.27A゜ (0.127nm ), , P-π, , . COO- , , X [5] , . , , :2000-09-28 :(1945-), , , , 。 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　3 96 . 1　 1.1　 :FT-IRMagna-550 (Nicoler ). :(AR)、(AR);(GR)、(G R);(AR)、(AR); (AR), (AR);(AR)、(AR). 1.2　 :200 KBr 200mg , 1.0mg , , ., , 5 , .