双硒化物(LL),例如8- [MeSe(X)]-1- [MeSe(Z)] C 10 H 6(1 (LL)),8- [EtSe(X)]-1- [EtSe (Z)] C 10 H 6(2 (LL)),8- [ p -YC 6 H 4 Se(X)]-1- [MeSe(Z)] C 10 H 6(3 (LL))和8 -[ p -YC 6 H 4 Se(X)]-1- [ p -YC 6 H 4 Se(Z)] C 10 H 6(4 (LL))在0°C下用臭氧氧化,其中(X ,Z)=(孤独对,孤独对)。双硒氧化物 在氧化1 (LL),3 (LL)和4 (LL)时分别获得1 (OO),3 (OO)和4(OO),其中(X,Z)=(氧,氧),分别通过相应的硒化硒氧化物1 (LO),3 (LO)和4 (LO)。在2 (LL)中观察到了简便的Se–C键断裂。 通过X射线分析确定1 (LO
Torsional Angular Dependence of1J(Se,Se) and Fermi Contact Control of4J(Se,Se): Analysis ofnJ(Se,Se) (n=1–4) Based on Molecular Orbital Theory
作者:Waro Nakanishi、Satoko Hayashi
DOI:10.1002/chem.200701532
日期:2008.6.20
to 1J(Se,Se) at phi=0 and 180 degrees to give large values of 1J(Se,Se), whereas various transitions contribute and cancel each other out at phi=90 degrees to give small values of 1J(Se,Se). Large 4Jobsd(Se,Se) values were also observed in the nonbonded Se...Se, Se...Se=O, and O=Se...Se=O interactions at naphthalene 1,8-positions. The Fermicontact (FC) term contributes significantly to 4J(Se,Se), whereas