Synthesis, Crystal Structure and Catalytic Activity of a Dinuclear Aluminum Alkyl Complex

Treatment of indolyl-3-aldimines（3-tBuN=CH）C8H5NH with AlMe3 afforded the deprotonated indolyl aluminum complex cis-[（μ-η1:η1-3-tBuN=CH）C8H5NAlMe2]2,and its crystal structure was determined by X-ray single-crystal diffraction.The crystal belongs to the orthorhombic system,space group P21212 with a = 14.590（9）,b = 15.860（2）,c = 13.266（8） A,μ=0.118 mm-1,Mr = 512.64,V= 3069.5（3） A3,Z = 4,Dc= 1.109 g/cm3,F（000） = 1104,R= 0.0451 and wR = 0.0937 for 4978 observed reflections with I> 2σ（I）.In addition,the title compound exhibited a high catalytic activity toward the addition of amines to carbodiimide to form guanidines.