the 3.12 Å Cr...Cr distance. According to magnetic data diamagnetic TI(2-) dianions and two Cr(3+) atoms with high S = 3/2 spin state are present in a dimer allowing strong antiferromagnetic coupling between two Cr(3+) spins with exchange interaction of -35.4 K and the decrease of molar magnetic susceptibility below 140 K. Paramagnetic TI(.-) radical anions with the S = 1/2 spin state have also been
decamethylchromocene的相互作用(CP * 2的Cr)与
硫靛(TI)得到配位络合物[TI-(μ 2 -O),(μ-O)]的CP *的Cr} 2 .
C6H14(1),其中一个CP *配位体在CP * 2中, Cr被TI取代。TI采用顺式构象1允许两个羰基
铬的协调。另外,TI的一个氧原子成为μ 2 -bridge两个
铬原子形式[TI-(μ 2 -O),(μ-O)]的CP *的Cr} 2距离为3.12ÅCr ... Cr的二聚体。根据磁数据,在二聚体中存在具有高S = 3/2自旋态的反磁性TI(2-)双价阴离子和两个Cr(3+)原子,从而允许两个Cr(3+)自旋之间的强反
铁磁耦合,且交换相互作用为- 35.4 K和低于140 K时摩尔磁化率的降低。还获得了S = 1/2自旋态的顺磁性TI(.-)自由基阴离子,并在晶体cryptand [2,2,2](Na +)}(TI .