金属有机电荷转移盐(CpFeBz)_n[M(L)_2](L=mnt或dmit)的合成及其三阶非线性光学性质  

Synthesis and Third-Order Optical Nonlinearity of Organometallic Salts (CpFeBz)_nM (L)_ 2 (L=mnt or dmit)

作　　者：杨楚罗[1] 秦金贵[1] 刘道玉[1] 王友贵[2] 司金海[2] 赵江 叶佩弦[2] 

机构地区：[1]武汉大学化学系,武汉430072 [2]中国科学院物理研究所,北京100080

出　　处：《化学学报》1997年第9期846-852,共7页Acta Chimica Sinica

基　　金：国家科委攀登计划;国家教委资助课题

摘　　要：合成了两种类型共九个新的金属有机电荷转移盐（ＣｐＦｅＢｚ）ｎ［Ｍ（ｍｎｔ）２］和（ＣｐＦｅＢｚ）ｎ［Ｍ·（ｄｍｉｔ）２］（Ｍ＝Ｎｉ，Ｐｄ，Ｐｔ，Ｃｕ，Ｃｏ；Ｃｐ代表环戊二烯基；Ｂｚ代表苯…）。通过元素分析、ＩＲ和＾１Ｈ ＮＭＲ对化合物进行了鉴定。用简并四波混频的方法首次研究了金属有机电荷转移盐的三阶非线性光学性质。结果表明，这类金属有机电荷转移盐有较大的近共振三阶非线性光学响应。Two series of new organometallic salts (CpFeBz)nM(mnt)2 and (CpFeBz)nM(dmit)2 (M = Ni, Pd, Pt, Cu or Co; Cp = Cyclopentadienyl, Bz = Benzene, H2mnt = maleonitriledithiol; H2dmit= 4, 5 - dimercapto - 1, 3 - dithiole - 2 - thione, n = 1 or 2) were synthesized by metathetical reaction. They were charaterized by EA, IR and 1H NMR. The third - order optical nonlinearity of organometallic salts was studied by DFWM method for the first time. These molecules exhibit second hyperpolarizability which is in the order of 10 esu. The results also show that the nonlinearity mainly comes from the contribution of the planar conjugated anions.

关 键 词：金属有机 电荷转移盐 三阶非线性光学 

分 类 号：O627[理学—有机化学] O437[理学—化学]