摘要
研究了烷氧桥相连的四苯基双卟啉及其Ｍｎ（Ⅲ）、Ｆｅ（Ⅲ）、Ｃｏ（Ⅱ）配合物的红外光谱（３６００～１５０ｃｍ－１），对一些主要吸收谱带进行了经验归属．金属敏感谱带出现在１５５８．２（以Ｈ２Ｐ－Ｈ２Ｐ为例）、１４７７．２、１４０１．９、１３５０．５、１００１．７、９６５．９、８７７．３和７９８．８ｃｍ－１附近，金属和烷氧桥都敏感的谱带出现在１５９５．１（以Ｈ２Ｐ为例）、１４９１．１、８５１．１和７２３．８ｃｍ－１附近，为３１８．３ｃｍ－１，为３７１．４ｃｍ－１．Ｍ－Ｎ（Ｍ为金属离子）与卟啉环复合振动的吸收频率变化的规律如下：（１）ＣＯ（Ⅱ）＞Ｍｎ（Ⅲ）＞Ｆｅ（Ⅲ）；（２）Ｍ－Ｎ伸缩振动为主的复合振动，ＭＰ＞Ｍｐ－ＭＰ、Ｍ－Ｎ弯曲振动为主的复合振动，ＭＰ＜Ｍｐ－ＭＰ．
The FTIR spectra(3600～150 cm-1)of bisteraphenylmetalloporphyrin dimers linked by a flexible alkoxy chain were measured and investigated.The major bands have been empirically assigned in comparison with a large number of porphyrins and metalloporphyrin complexes.The metal sensitive bands were found at 1558;2,l472.2,1401.9,1350.5,l 001.7,965.9,877.3 and 798.8 cmr) The structure sensitive bands of both the metal and the alkoxy chain were found at l 595.1,1491.1' 851.1 and 723.8cm-1.The Mn-cl and Fe-cl were found at 3l8.2 and 371.4 cm-1 respectively. The vibration coupling between the M──Nand the porphyrin ring deformation is Co(Ⅱ)>Mn(Ⅲ)>Fe(Ⅲ).The vibration coupling between the M-Nstretching modes and the porphyrin ring deformation is MP>Mp-MP. The vibration coupling between the M-Nbending modes and the porphyrin ring deformation is MP<MP-MP.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第6期849-853,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
