Synthesis of macrocyclic compounds with steric barriers in macroheterocycle proceeding from (Z)-1,2,3,6-tetrahydrophthalic and phthalic acids
摘要:
Using 1,2-dibromoethane, (E)-1,4-dibromo-2-butene, (Z)-1,2,3,6-tetrahydrophthalic and phthalic acids we obtained along [1+1] scheme uncommon macrocyclic compounds containing ester groups, multiple bonds, and amide moieties in the macroheterocycle. The neutralization of bis-acids with ethylenediamine gave the corresponding macrocyclic diammonium salts that on heating to the melting point were converted into the corresponding macrocyclic diamides. The structure of compounds obtained was established from the elemental analyses, IR and NMR spectra.
Synthesis of macrocyclic compounds with steric barriers in macroheterocycle proceeding from (Z)-1,2,3,6-tetrahydrophthalic and phthalic acids
摘要:
Using 1,2-dibromoethane, (E)-1,4-dibromo-2-butene, (Z)-1,2,3,6-tetrahydrophthalic and phthalic acids we obtained along [1+1] scheme uncommon macrocyclic compounds containing ester groups, multiple bonds, and amide moieties in the macroheterocycle. The neutralization of bis-acids with ethylenediamine gave the corresponding macrocyclic diammonium salts that on heating to the melting point were converted into the corresponding macrocyclic diamides. The structure of compounds obtained was established from the elemental analyses, IR and NMR spectra.
Hydrogen bonded helices: Synthesis, crystal structure and self-assembled microtubes
作者:P. Mosae Selvakumar、E. Suresh、P.S. Subramanian
DOI:10.1016/j.molstruc.2008.08.016
日期:2009.2
The single crystal X-ray structure obtained for 1 , 2 and 3 indicates the formation of self-assembled single stranded helicalstructure mediated through O–H…O interaction of the end carboxylic acids. Interestingly compound 1 self-assembled into microtubes in ethanol:water solvent mixture. The solvent and the O–H…O; C–H…O interaction combinedly play crucial role in molecular self-assembly process and
mononuclear in [Cu(L1)·(bpy)] (2) and [Cu(L1)·(phen)]·(DMF) (3), where bpy = bipyridine and phen = phenanthroline. The paddle wheel arrangement in 1 is very similar to that in dimeric Cu(II) acetate; the symmetric arrangement in 1 rearranged in its corresponding monomeric species on reacting with phen and bpy. The symmetric bis-chelate ring in 1 and the desymmetrized monochelate ring in 2 and 3 are discussed
New macrocyclic Cu(II)-bischelates with paddle wheel Cu2-acetate cage
作者:P. Mosae Selvakumar、E. Suresh、P.S. Subramanian
DOI:10.1016/j.ica.2007.08.001
日期:2008.4
Abstract Two novel bolaamphiphile based dicarboxylic ligands L1H2 and L2H2 are synthesized by desymmetrizing aromatic anhydrides. The corresponding Cu(II) complexes [Cu(L1) · EtOH]2 (1), [Cu(L2) · (CH3CN)]2 (2) are synthesized and characterized. The crystal structure obtained for (1) and (2) indicates that they are new class of tetralactone type macrocyclic Cu(II) chelate complexes with paddle wheel
head group is demonstrated to form various macrocyclic ring compounds such as M1, M2, and M3. Compound M1, containing both lactam [-C(=O)-N-H)] and lactone [-C(=O)-O-] functional groups, has a [16]-membered macrocyclic ring, while compound M2, composed of only lactones [-C(=O)-O-], exists with a [19]-membered macrocyclic ring. Similarly, compound M3, composed of Cu(II) metal ions, exists with a macrocycle-like
Synthesis, crystal structure and luminescence properties of “paddle wheel” and “butterfly” shaped polynuclear complexes
作者:Fenghua Bai、Yulan Ni、Yang Jiang、Xuenan Feng、Tuya Wuren、Liping Zhang、Haiquan Su
DOI:10.1016/j.molstruc.2016.11.053
日期:2017.3
cluster-based complexes were constructed from the reaction of metal ions (FeIII, CuII, ZnII) and ligand (2-(2-[2-carbosybenzoy])oxy]-ethoxy}carbonyal)benzoic acid) (H2L) in CH3CH2OH, CH3OH, (C2H5)3N and C2H3N. Two paddle wheel trinuclear clusters [Fe3(μ3-O)(μ2-η2-L)3(CH3OH)3]NO3·C2H5OH·CH3OH (1) and [Fe3(μ3-O)(μ2-η2-L)3(H2O)3]NO3·5CH3OH·H2O (2), one tetranuclear cluster [Cu2(μ2-L)2(C2H3N)2·2C2H3N]2 (3) and
摘要 由金属离子(FeIII、CuII、ZnII)与配体(2-(2-[2-羧基苯甲酰基])氧基]-乙氧基}羰基)苯甲酸(FeIII、CuII、ZnII)反应构建了一系列基于金属簇的配合物( H2L) 在 CH3CH2OH、CH3OH、(C2H5)3N 和 C2H3N 中。两个桨轮三核簇[Fe3(μ3-O)(μ2-η2-L)3(CH3OH)3]NO3·C2H5OH·CH3OH(1)和[Fe3(μ3-O)(μ2-η2-L)3( H2O)3]NO3·5CH3OH·H2O(2),一个四核簇[Cu2(μ2-L)2(C2H3N)2·2C2H3N]2(3)和一个蝴蝶形双核簇[Zn2(μ2-L)2(得到C2H5OH)2]·2CH3OH(4)。配合物1、2和4通过分子间氢键进一步组装形成超分子骨架。在配合物 3 中,柔性苯甲酸配体与两个 CuII 螯合,这导致 Cu Cu 金属间化合物分离(范围从 2.644