Relation between Complexes Iotramolecular Transfer and Structure of [M(SS)(NN)](M=Zn2+, Cd2+)
PAN Qing-cai1,ZHAO Yong-he1,SHEN Hong-qi1,YAN Feng-mei1,LI Wei1, PENG Zheng-he2
1. Department of Chemistry and Chemical Engineering, Huanghuai University, Zhumadian 463000, China 2. College of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, China
Abstract:The title complexes of [M(SS)(NN)](M=Zn2+, Cd2+; SS=1,2-dicyano 1,2-ethylene -dithiolate or maleonitriledithiolate; NN=5-nitro-1,10 phenanthroline) were synthesized. The electronic absorption spectra of complexes [M(SS)(NN)] in DMSO, DMF, acetone and Py were reported. The spectra absorption bands 270-280 nm, 320-350 nm and 350-390 nm are the intraligand πb→π* transfer of ligand mnt2- and 5-NO2-phen. The spectra absorption band 400-500 nm is intramolecular charge transfer (LL′CT) from a ligand (mnt2-) to another ligand (5-NO2- phen) The relation between electronic spectra absorption band and correlative transition in the molecular orbital energy level diagram of the complexes was investigated. The LL′CT band of the title complexes is weaker by comparison with M(SS)(NN)(M=Co2+,Fe2+,Ni2+ and Cu2+). The LL′CT band of [M(SS)(NN)](M=Zn2+, Cd2+) (7b2 to 7b1) is symmetry forbidden.
[1] Yokel R A, Allen D D, Burgi D E, et al. J Pharmacol. Toxicol. Meth., 1992,27: 135. [2] Zuleta J A, Bevilacqua J M, Proserpio D M, et al. Inorg. Chem., 1992, 31: 2396. [3] Scott D, Cummings S D, Cheng L T, et al. Chem. Mater., 1997, 9(2):440. [4] Watanabe S, Onogawa O, Komatsu Y, et al. J. Am. Chem. Soc., 1998, 120(1): 229. [5] LIU Yong-zhou, WANG Hai-chuan, PENG Zheng-he, et al(刘涌洲,汪海川,彭正合,等). Chemical Journal of Chinese Universities(高等学校化学学报),2004,25(4): 598. [6] GAN Xiong, XIN Yin, REN Xiao-ming, et al(甘 雄, 谢 音, 任小明,等). Acta Chimica Sinica(化学学报),2005, 63(14): 1307. [7] HUANG Yuan-qiao, PAN Qing-cai, GAN Xiong, et al(黄元乔, 潘庆才, 甘 雄,等). J. Wuhan Univ.(Nat. Sci. Ed.)(武汉大学学报·理学版),2005,51(2): 135. [8] PAN Qing-cai, YAN Feng-mei, PENG Zheng-he, et al(潘庆才, 闫凤美, 彭正合,等). Chemical World(化学世界),2006, 47(10): 577. [9] PAN Qing-cai, PENG Zheng-he, REN Xiao-ming, et al(彭正合, 潘庆才, 任小明,等). Chemistry Bulletin(化学通报),2000, 63(12): 40. [10] PAN Qing-cai, PENG Zheng-he(潘庆才, 彭正合). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2003,23(2): 249. [11] PAN Qing-cai, PENG Zheng-he, QIN Zi-bin(潘庆才, 彭正合, 秦子斌). Henan Science(河南科学), 1997, 15(1): 23. [12] Chao-qun Yuan, Zheng-he Peng, Qing-cai Pan, et al. J. Mol. Struct.,2006, 789: 52. [13] PAN Qing-cai, ZHU Shun-qing, LI Wei, et al(潘庆才, 朱顺清, 李 伟,等). Journal of Central China Normal University(Natural Sciences)(华中师范大学学报·自然科学版),2006,40(4): 548. [14] YAN Feng-mei, PAN Qing-cai, SHEN Hong-qi, et al(闫凤美, 潘庆才, 沈红旗,等). Journal of Henan Normal University(Natural Science)(河南师范大学学报·自然科学版),2007,35(3): 99.