摘要
he reaction of (2, 4-C_7H_11)_3Nd with HC=CC_6H_5 in toluene leads to [(2, 4-C_7H_11)_2NdC = CC_6H_5]_2 , which crystallizes in the space group P_cab with unit cell pa-rameters a=1 . 0489 (11), b=1.8033 (12), c=2. 1064 (15)nm and Z=4 , least-squares refinement based on 2323 observed reflections converged to a final R valueof 0. 08. The molecular structure shows that the complex is a dimer, in which two(2,4-C_7H_11)_2Nd units are connected by asymmetrical alkynide bridges with indepen-dent Nd-C(alkynide) bond lengths of 0. 2552(25)and 0. 2560(24)nm, Nd-C=C angles of 124. 1(17)° and 134. 2(17)°.
he reaction of (2, 4-C_7H_11)_3Nd with HC=CC_6H_5 in toluene leads to [(2, 4-C_7H_11)_2NdC = CC_6H_5]_2 , which crystallizes in the space group P_cab with unit cell pa-rameters a=1 . 0489 (11), b=1.8033 (12), c=2. 1064 (15)nm and Z=4 , least-squares refinement based on 2323 observed reflections converged to a final R valueof 0. 08. The molecular structure shows that the complex is a dimer, in which two(2,4-C_7H_11)_2Nd units are connected by asymmetrical alkynide bridges with indepen-dent Nd-C(alkynide) bond lengths of 0. 2552(25)and 0. 2560(24)nm, Nd-C=C angles of 124. 1(17)° and 134. 2(17)°.
