Two-Coordinate, Quasi-Two-Coordinate, and Distorted Three Coordinate, T-Shaped Chromium(II) Amido Complexes: Unusual Effects of Coordination Geometry on the Lowering of Ground State Magnetic Moments
作者:Jessica N. Boynton、W. Alexander Merrill、William M. Reiff、James C. Fettinger、Philip P. Power
DOI:10.1021/ic202661n
日期:2012.3.5
ion with a very strongly bent core geometry (N–Cr–N= 121.49(13)°) with secondary Cr--C(aryl ring) interactions of 2.338(4) Å to the ligand. Magnetometry studies showed that the two linear chromium species 1 and 2 have ambient temperature magnetic moments of about 4.20 μB and 4.33 μB which are lower than the spin-only value of 4.90 μB typically observed for six coordinate Cr2+. The bent complex 4 has
该单核铬的合成和表征(II)三联苯取代的伯酰胺基络合物的Cr N(H)中的Ar镨我6 } 2(AR镨我6 = C 6 H ^ 3 -2,6-(C 6 H ^ 2 - 2,4,6- i Pr 3)2(1),Cr N(H)Ar Pr i 4 } 2(Ar Pr i 4 = C 6 H 3 -2,6-(C 6 H 3 -2, 6- i Pr 2)2(2),Cr N(H)Ar Me 6 } 2(Ar Me 6 = C 6 H 3 -2,6-(C 6 H 2 -2,4,6-Me 3)2(4),和路易斯碱加合物的Cr N(H)中的Ar我6 } 2(THF)(3)中描述。在三联苯主酰氨基锂衍生物锂的反应N(H)中的Ar镨我6 }和Li N(H )与CrCl 2(THF)2以2:1的比例形成Ar Pr i 4 }得到络合物参照图1和图2,这是两种配位铬和第一种具有线性配位的高自旋Cr 2+的稳