Bistripodand Amide Host for Compartmental Recognition of Multiple Oxyanions
摘要:
A new benzene-based hexasubstituted bistripodal receptor is synthesized and explored as a new generation receptor for multiple anion binding. The solid state crystal structure showed the encapsulation of four nitrate anions In a bistripodand fashion with "ababab" conformation of the receptor, and upon complexation with acetate anions, the receptor adopted less favorable "aaabbb" conformation with two encapsulated acetate Ions.
已经研究了五个新合成的六酰胺受体(L1-L5)和先前报道的三个此类受体(L6-L8),以研究各种形状和大小的阴离子的结合倾向。五个新的受体阴离子复合物(L1-L5),复合物(1-5)和先前报道的七个这样的复合物(L6-L8),复合物(6-12)的单晶X射线结构分为四类构象例如aaabbb(A),ababab(B),aabaab(C)和aaaaaa(D)取决于阴离子以及受体主链上的取代基的碱性。中度基本客人;氯化物表现出两种不同的构象,其A和B模式分别为L1(R = – o NO 2 C 6 H 4,络合物1)和L4(R = – p FC 6 H 4,络合物2)(宿主:客)化学计量。另一方面,L2的强碱性乙酸盐络合物(R = – p NO 2 C 6 H 4),L3(R = – m CF 3 C 6 H 4),L5(R = 4-吡啶基),L6(R = –C 6 F 5),L7(R = – m
Bistripodand Amide Host for Compartmental Recognition of Multiple Oxyanions
作者:M. Arunachalam、Pradyut Ghosh
DOI:10.1021/ol9026649
日期:2010.1.15
A new benzene-based hexasubstituted bistripodal receptor is synthesized and explored as a new generation receptor for multiple anion binding. The solid state crystal structure showed the encapsulation of four nitrate anions In a bistripodand fashion with "ababab" conformation of the receptor, and upon complexation with acetate anions, the receptor adopted less favorable "aaabbb" conformation with two encapsulated acetate Ions.
Arene platform based hexa-amide receptors for anion recognition: single crystal X-ray structural and thermodynamic studies
Five newly synthesized hexa-amide receptors (L1–L5) and previously reported three such receptors (L6–L8) have been explored to investigate binding propensity of anions of various shapes and sizes. Single crystal X-ray structures of five new anion complexes of receptors (L1–L5), complexes (1–5) and previously reported seven such complexes of (L6–L8), complexes (6–12) fall under four categories of conformations
已经研究了五个新合成的六酰胺受体(L1-L5)和先前报道的三个此类受体(L6-L8),以研究各种形状和大小的阴离子的结合倾向。五个新的受体阴离子复合物(L1-L5),复合物(1-5)和先前报道的七个这样的复合物(L6-L8),复合物(6-12)的单晶X射线结构分为四类构象例如aaabbb(A),ababab(B),aabaab(C)和aaaaaa(D)取决于阴离子以及受体主链上的取代基的碱性。中度基本客人;氯化物表现出两种不同的构象,其A和B模式分别为L1(R = – o NO 2 C 6 H 4,络合物1)和L4(R = – p FC 6 H 4,络合物2)(宿主:客)化学计量。另一方面,L2的强碱性乙酸盐络合物(R = – p NO 2 C 6 H 4),L3(R = – m CF 3 C 6 H 4),L5(R = 4-吡啶基),L6(R = –C 6 F 5),L7(R = – m