首页> 外文期刊>Journal of chemical crystallography >Synthesis and crystal structures of complexes of Ni (II) to chiral Schiff bases of (R)- and (S)-serine with (S)- and (R)-2-N-(N '-benzylprolyl)-aminobenzophenone
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Synthesis and crystal structures of complexes of Ni (II) to chiral Schiff bases of (R)- and (S)-serine with (S)- and (R)-2-N-(N '-benzylprolyl)-aminobenzophenone

机译:Ni(II)与(R)-和(S)-丝氨酸与(S)-和(R)-2-N-(N'-苄基脯氨酰基)-氨基二苯甲酮的手性席夫碱配合物的合成和晶体结构

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摘要

The three-dimensional molecular and crystal structures of a pair of enantiopure mirror complexes of Ni (II) to chiral Schiff bases of (R)- and (S)-serine with (S)- and (R)-2-N-(N'-benzylprolyl)-aminobenzophenone (BPB), denoted as (S,R)-BPB-Ser-Ni and (R,S)-BPB-Ser-Ni, respectively, have been determined by X-ray diffraction. The complexes crystallize in the orthorhombic space group P2(1)2(1)2(1) with unit cell parameters: a = 10.050(2) angstrom, b = 10.100(2) angstrom, c = 26.514(5) angstrom, V = 2691.3(9) angstrom(3), and Z = 4 for (S,R)-BPB-Ser-Ni; and a = 9.878(2) angstrom, b = 10.130(2) angstrom, c = 26.304(5) angstrom, V = 2632.1(9) angstrom(3), and Z = 4 for (R,S)-BPB-Ser-Ni. The Ni atom is square-planar-coordinated to N(1), N(2), O(4), and N(3) of the Schiff base with minor distortion. The hydroxymethyl group on the serine moiety is axial to the coordination plane and parallel to the neighboring phenyl group.
机译:Ni(II)与(R)-和(S)-丝氨酸与(S)-和(R)-2-N-(的手性席夫碱的一对对映纯镜配合物的三维分子和晶体结构通过X射线衍射测定分别表示为(S,R)-BPB-Ser-Ni和(R,S)-BPB-Ser-Ni的N'-苄基脯氨酰基)-氨基二苯甲酮(BPB)。配合物在正交晶空间群P2(1)2(1)2(1)中以晶胞参数结晶:a = 10.050(2)埃,b = 10.100(2)埃,c = 26.514(5)埃,V (S,R)-BPB-Ser-Ni == 2691.3(9)埃(3),Z = 4。对于(R,S)-BPB-Ser,a = 9.878(2)埃,b = 10.130(2)埃,c = 26.304(5)埃,V = 2632.1(9)埃(3),Z = 4 -你。 Ni原子与Schiff碱的N(1),N(2),O(4)和N(3)呈方形平面配位,且变形很小。丝氨酸部分上的羟甲基轴向于配位平面且平行于相邻的苯基。

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