He L, Chen B, Cai S, Lin S, Chen C, Zhang L
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 350002 Fuzhou.
Guang Pu Xue Yu Guang Pu Fen Xi. 1999 Oct;19(5):666-9.
The IR spectra of micro2-OR or micro2-SR- bridged double-cubane-like clusters containing MoFe3S4 cores (Et4N)3 [Mo2Fe6S8Cl6 (OMe)3] (1), (Et4N) [Mo2Fe6S8 (SPh)6 (OMe)3 (2), (Bu4N)3 Mo2Fe6S (SPh)6 (OMe)3] (3), (Et4N)3 Mo2Fe6S8 (SBu(t))6(OMe)3, (Et4N)3Mo2Fe6S8 (SPh)9 have been investigated. Their characteristic frequencies (v)Mo-micro2O(R), (v)Mo-micro2S(R), (v)Mo-S, (v)Fe-S*, (v)Fe-SR, (v)Fe-Cl were assigned by comparing their vibrational frequencies with their structural parameters and by comparing the IR spectra of them with that of the linear clusters. The electrophilic induced effects in different way and the relationship between deltav (i.e. (v)Mo-S* (v)Fe-S*) and Fe --> Mo charge transfer have been discussed. Finaly, the sameness and difference between the double-cubane-like and linear Mo-Fe-S clusters were demonstrated.
对含有MoFe3S4核的微2-OR或微2-SR桥连双立方烷状簇合物（Et4N）3 [Mo2Fe6S8Cl6 (OMe)3]（1）、（Et4N）[Mo2Fe6S8 (SPh)6 (OMe)3]（2）、（Bu4N）3 [Mo2Fe6S (SPh)6 (OMe)3]（3）、（Et4N）3 [Mo2Fe6S8 (SBu(t))6(OMe)3]（4）、（Et4N）3[Mo2Fe6S8 (SPh)9]（5）的红外光谱进行了研究。通过将它们的振动频率与其结构参数进行比较，并将它们的红外光谱与线性簇合物的红外光谱进行比较，对其特征频率（v）Mo-微2O（R）、（v）Mo-微2S（R）、（v）Mo-S、（v）Fe-S*、（v）Fe-SR、（v）Fe-Cl进行了归属。讨论了不同方式的亲电诱导效应以及δv（即（v）Mo-S* - （v）Fe-S*）与Fe→Mo电荷转移之间的关系。最后，论证了双立方烷状和线性Mo-Fe-S簇合物之间的异同。
