Types Of Inclusion Compounds Research Articles

Inclusion of potassium 4,4′-biphenyldicarboxylate into β-cyclodextrin: the design and synthesis of an organic secondary building unit

The paper describes a design strategy for the preparation of a novel inclusion compound (potassium 4,4′-biphenyldicarboxylate⊂β-CD) suitable for use in supramolecular chemistry. In the first step the chemical feasibility of such an inclusion compound was evaluated by DFT calculations. Preliminary results revealed that two types of adducts are energetically favourable: 1 ∶ 1 and 2 ∶ 1 (host ∶ guest). The stability in aqueous solution of the prepared inclusion compounds, a strict requirement for their use as Secondary Building Units in supramolecular chemistry, was investigated by means of liquid NMR (Job plot) and computational resolution of the equilibrium equations. As predicted by the theoretical calculations, it was found that two types of inclusion compounds were formed. The 1 ∶ 1 adduct has a large formation constant. Synthesis led to the preparation of two unusual crystalline products depending on the pH. Compound 1 (formed at pH = 7.5) is truly unprecedented and comprises a 1 ∶ 1 inclusion compound with a large water layer. Because it is highly stable in the liquid state this novel inclusion compound is a good candidate to be employed as a rigid organic Secondary Building Units in the construction of modular coordination polymers. Compound 2 (formed at pH = 10) comprises a mixture of the same two adducts predicted by the theoretical calculations and detected by liquid NMR, and its crystal structure exhibits a rare proportion between the host and the guest (4 ∶ 3).

Co-crystal of [CuCl4]2− and L1 and its inclusion compounds with three different guests (L1 = N,N,N′,N′-tetra-p-methoxybenzyl-ethylenediamine)

In this paper, we have built up the organic-inorganic hybrid co-crystal (1) by using the derivative of ethylenediammonium cations (N,N,N′,N′-tetra-p-methoxybenzyl-ethylenediamine, L1) and [CuCl4]2− anions. The reaction was carried out by mixing MeOH solution of CuCl2·2H2O and HCl/MeOH solution of L1 at room temperature. Two types of inclusion compounds can be formed when using different guest molecules. When guest molecules, such as anthracene or phenanthrene, were included, it resulted in the formation of interlayered structures: anthracene ⊂ [H2L1]2+·[CuCl4]2− (2) and phenanthrene ⊂ [H2L1]2+·[CuCl4]2− (3). When β-naphthyl phenol were included, it led to the formation of pillared-layered complexes of [1-chloride-β-naphthyl phenol]1.0·[β-naphthyl phenol]0.5·[methanol]1.0 ⊂ 2[H2L1]2+·2Cl−·[CuCl4]2− (4).

Sorption and Desorption of Inclusion Compound Guests Different Types of Inclusion Compounds

The guests present in inclusion compounds participate in bonding with the hosts. The conditions for the sorption and desorption of the guests are decisive for the properties of the inclusion compounds. They are surveyed for many types of inclusion compounds.

ChemInform Abstract: New Types of Inclusion Compounds. Part 3. Application of Inclusion Compounds in Chromatography

ChemInformVolume 21, Issue 46 Reviews ChemInform Abstract: New Types of Inclusion Compounds. Part 3. Application of Inclusion Compounds in Chromatography C. LUCA, C. LUCA Inst. Politehnic, Iasi, RomaniaSearch for more papers by this authorG. MIHAILA, G. MIHAILA Inst. Politehnic, Iasi, RomaniaSearch for more papers by this authorA. POPA, A. POPA Inst. Politehnic, Iasi, RomaniaSearch for more papers by this author C. LUCA, C. LUCA Inst. Politehnic, Iasi, RomaniaSearch for more papers by this authorG. MIHAILA, G. MIHAILA Inst. Politehnic, Iasi, RomaniaSearch for more papers by this authorA. POPA, A. POPA Inst. Politehnic, Iasi, RomaniaSearch for more papers by this author First published: November 13, 1990 https://doi.org/10.1002/chin.199046345Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat No abstract is available for this article. Volume21, Issue46November 13, 1990 RelatedInformation

The Structure of Diaquatetrakis(thiocyanato)cobalt(II)mercury(II)-N-Methyl-2-pyrrolidone(1/2), CoHg(SCN)4(H2O)2·2(C3H6CONCH3)

Abstract The crystal and molecular structure of the title complex was determined using the single-crystal X-ray diffraction method. A crystal of CoHgC14H22N6O4S4, F.W. 726.15, is tetragonal with a space group P\bar4, a=12.082(3), c=8.097(2)Å, U=1182.0(5)Å3, Z=2, Dx=2.04 Mg m−3, and μ(Mo Kα)=7.72 mm−1. Tetrahedral mercury(II) coordinated with four sulfur atoms and octahedral cobalt(II) coordinated with four nitrogen atoms of SCN− (equatorially) and two oxygen atoms of H2O (axially) are linked by thiocyanate bridges to form planar networks parallel to (001). The planes are connected by N-methyl-2-pyrrolidone (mpd) molecules through the hydrogen bonds with two coordinated water molecules at both side networks. The structure resembles that of the N,N-dimethylacetamide (dma) adduct, CoHg(SCN)4(H2O)2·2dma. These are new types of inclusion compounds.