Perylene bisimide dyes as versatile building blocks for functional supramolecular architectures

2004 ◽  
pp. 1564-1579 ◽  
Author(s):  
Frank Würthner
Keyword(s):  
Building Blocks ◽  
Perylene Bisimide ◽  
Supramolecular Architectures

Synthesis and supramolecular organization of the iodide and triiodides of a polycyclic adamantane-based diammonium cation: the effects of hydrogen bonds and weak I⋯I interactions

CrystEngComm ◽  
2021 ◽  
Vol 23 (12) ◽  
pp. 2384-2395
Author(s):  
Ivan A. Mezentsev-Cherkes ◽  
Tatiana A. Shestimerova ◽  
Aleksei V. Medved'ko ◽  
Mikhail A. Kalinin ◽  
Alexey N. Kuznetsov ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Building Blocks ◽  
Supramolecular Organization ◽  
Supramolecular Architectures

Adamantane-like divalent building blocks and iodide or polyiodide anions combine into supramolecular architectures with the help of various noncovalent forces ranging from strong hydrogen bonds to secondary and weak I⋯I interactions.

Pyrido[1,2-a]pyrazine - Startprodukte für regioselektive Ringtransformationen und supramolekulare Architekturen / Pyrido[1,2-a]pyrazines - Starting Materials for Regioselective Ringtransformation Reactions and Supramolecular Architectures

2002 ◽  
Vol 57 (4) ◽  
pp. 471-478 ◽  
Author(s):  
D. Müller ◽  
B. Frank ◽  
R. Beckert ◽  
H. Görls
Keyword(s):  
Cycloaddition Reaction ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Building Blocks ◽  
Ring Transformation ◽  
Supramolecular Architectures ◽  
Cross Coupling Reaction ◽  
Metal Catalyzed

The easily available pyrido[1,2-a]pyrazines of type 1 are versatile building blocks for ring transformation reactions.W ith heterocyclic quinones such as quinoline-2,5,8-triones 4a-c, a highly regioselective [4+2]-cycloaddition reaction takes place in the first step, followed by a ring transformation cascade.T he 1,6-diazaanthracene-2,9,10-triones 5a-e, which possess an additional bipyridine substructure, could be isolated as main products.In order to modify the starting products of type 1, a metal-catalyzed cross-coupling reaction with acetylenic benzoic esters 9a,b has been performed.T he modified pyridopyrazines 10a,b which were obtained in good yields could be transformed by analogy to 1a,b into ring-fused heterocyclic quinones 12a,b.

scholarly journals New Silver(I) Coordination Polymer with Fe4 Single-Molecule Magnets as Long Spacer

2018 ◽  
Vol 4 (4) ◽  
pp. 43 ◽  
Author(s):  
Luca Rigamonti ◽  
Manuela Vaccari ◽  
Fabrizio Roncaglia ◽  
Carlo Baschieri ◽  
Alessandra Forni
Keyword(s):  
Coordination Polymer ◽  
Single Molecule ◽  
Building Blocks ◽  
Zero Field ◽  
Single Molecule Magnets ◽  
Long Distance ◽  
Linear Arrangement ◽  
Thermally Activated ◽  
Supramolecular Architectures ◽  
Donor Nitrogen

In continuation of our work on supramolecular architectures of single-molecule magnets (SMMs) as a promising strategy in developing their magnetic performance, in this paper we report the synthesis and single crystal X-ray structure of the centered triangular tetrairon(III) SMM, [Fe4(PhpPy)2(dpm)6], Fe4 (Hdpm = dipivaloylmethane, H3PhpPy = 2-(hydroxymethyl)-2-(4-(pyridine-4-yl)phenyl)propane-1,3-diol), and its assembly in the coordination polymer {[Fe4(PhpPy)2(dpm)6Ag](ClO4)}n, Fe4Ag, upon reaction with silver(I) perchlorate. Thanks to the presence of the pyridyl rings on the two tripodal ligands, Fe4 behaves as divergent ditopic linker, and due to the Fe4:AgClO4 1:1 ratio, Fe4Ag probably possesses a linear arrangement in which silver(I) ions are linearly coordinated by two nitrogen atoms, forming 1D chains whose positive charge is balanced by the perchlorate anions. The stabilization of such a polymeric structure can be ascribed to the long distance between the two donor nitrogen atoms (23.4 Å) and their donor power. Fe4Ag shows slow relaxation of the magnetization which follows a thermally activated process with Ueff/kB = 11.17(18) K, τ0 = 2.24(17) 10−7 s in zero field, and Ueff/kB = 14.49(5) K, τ0 = 3.88(8) 10−7 s in 1-kOe applied field, in line with what reported for tetrairon(III) SMMs acting as building blocks in polymeric structures.

Synthesis and characterization of new tetra-substituted porphyrins with exo-donor carboxylic groups as building blocks for supramolecular architectures: Catalytic and structural studies of their metalated derivatives

2010 ◽  
Vol 14 (09) ◽  
pp. 804-814 ◽  
Author(s):  
Lucia Carlucci ◽  
Gianfranco Ciani ◽  
Simona Maggini ◽  
Davide M. Proserpio ◽  
Fabio Ragaini ◽  
...  
Keyword(s):  
Building Blocks ◽  
Supramolecular Organization ◽  
Silver Complexes ◽  
Structural Studies ◽  
Polymeric Compound ◽  
X Ray ◽  
X Ray Crystallography ◽  
Supramolecular Architectures ◽  
Carboxylic Groups

We report herein the synthesis of the porphyrins 5,10,15,20-tetrakis(4-carboxybiphenyl)-porphyrin (H2TCBP) and 5,10,15,20-tetrakis(4-carboxy-2,6-dimethylbiphenyl)porphyrin (H2TCDMBP) bearing diphenyl units on meso-positions, and of their cobalt and silver derivatives. The silver complexes of H2TCDMBP and of H2TCPP ( H2TCPP = 5 ,10,15,20-tetrakis(4-carboxyphenyl)porphyrin) were investigated by X-ray crystallography and their supramolecular organization elucidated. Co(TCBP) was reacted with copper formate, yielding a polymeric compound that showed a catalytic activity in the benzylic amination of hydrocarbons using arylazide as aminating agent.

scholarly journals Towards Building Blocks for Supramolecular Architectures Based on Azacryptates

Molecules ◽  
2020 ◽  
Vol 25 (7) ◽  
pp. 1733 ◽  
Author(s):  
Ana Miljkovic ◽  
Sonia La Cognata ◽  
Greta Bergamaschi ◽  
Mauro Freccero ◽  
Antonio Poggi ◽  
...  
Keyword(s):  
Conformational Changes ◽  
Self Assembly ◽  
Hydrophobic Interactions ◽  
Building Blocks ◽  
Water Mixture ◽  
Molecular Systems ◽  
Supramolecular Architectures ◽  
Starting Point ◽  
The Difference ◽  
Supramolecular Devices

In this work, we report the synthesis of a new bis(tris(2-aminoethyl)amine) azacryptand L with triphenyl spacers. The binding properties of its dicopper complex for aromatic dicarboxylate anions (as TBA salts) were investigated, with the aim to obtain potential building blocks for supramolecular structures like rotaxanes and pseudo-rotaxanes. As expected, UV-Vis and emission studies of [Cu2L]4+ in water/acetonitrile mixture (pH = 7) showed a high affinity for biphenyl-4,4′-dicarboxylate (dfc2−), with a binding constant of 5.46 log units, due to the best match of the anion bite with the Cu(II)-Cu(II) distance in the cage’s cavity. Compared to other similar bistren cages, the difference of the affinity of [Cu2L]4+ for the tested anions was not so pronounced: conformational changes of L seem to promote a good interaction with both long (e.g., dfc2−) and short anions (e.g., terephthalate). The good affinity of [Cu2L]4+ for these dicarboxylates, together with hydrophobic interactions within the cage’s cavity, may promote the self-assembly of a stable 1:1 complex in water mixture. These results represent a good starting point for the application of these molecular systems as building units for the design of new supramolecular architectures based on non-covalent interactions, which could be of interest in all fields related to supramolecular devices.

Terpyridine - Ruthenium Complexes as Building Blocks for New Metallo-Supramolecular Architectures

2004 ◽  
Vol 57 (5) ◽  
pp. 419 ◽  
Author(s):  
Harald Hofmeier ◽  
Philip R. Andres ◽  
Richard Hoogenboom ◽  
Eberhardt Herdtweck ◽  
Ulrich S. Schubert
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Functional Groups ◽  
Building Blocks ◽  
Two Dimensional ◽  
X Ray ◽  
Supramolecular Architectures ◽  
Directed Synthesis ◽  
Materials Research ◽  
Terpyridine Ligands

Supramolecular architectures are of great interest in modern materials research. The directed synthesis of asym-metric 2,2′:6′,2′′-terpyridine ruthenium(II) complexes is an important tool towards such systems. In this contribution, we report the synthesis of asymmetric terpyridine ruthenium(II) complexes as models for supramolecular architectures and polymers. Terpyridines, bearing different functional groups in the 4′-position, were complexed with unfunctionalized terpyridine ligands using Ru(III)/Ru(II) chemistry. The resulting compounds were characterized by UV-vis, one- and two-dimensional NMR spectroscopy as well as MALDI-TOF mass spectrometry. In addition, X-ray structure analysis was performed for one selected example.

Self-Assembly of Supramolecular Architectures Using Chlorotetra(Pyrrole-2-Carboxylato)Diruthenium Molecules as Building Blocks

2007 ◽  
Vol 19 (1) ◽  
pp. 219-230 ◽  
Author(s):  
María del Carmen Barral ◽  
Rodrigo González-Prieto ◽  
Santiago Herrero ◽  
Reyes Jiménez-Aparicio ◽  
José Luis Priego ◽  
...  
Keyword(s):  
Self Assembly ◽  
Building Blocks ◽  
Supramolecular Architectures

Synthesis, spectroscopic and structural analysis of a melamine copper complex

2014 ◽  
Vol 70 (a1) ◽  
pp. C1239-C1239
Author(s):  
Amani Direm ◽  
Noureddine Dadda ◽  
Wahiba Falek ◽  
Zina Boutobba ◽  
Nourredine Benali-Cherif
Keyword(s):  
Structural Analysis ◽  
Copper Complex ◽  
Structural Investigation ◽  
Three Dimensional ◽  
Building Blocks ◽  
The Other ◽  
X Ray Diffraction ◽  
X Ray ◽  
Supramolecular Architectures ◽  
Carboxylic Anions

Owing to its multiple sites acting as H-bonds' donors, melamine and its derivatives are considered as excellent building blocks for the construction of various crystalline supramolecular architectures based on phosphate, sulfate, chloride and carboxylic anions [1-10] on one hand and chlorometallate anions on the other hand [11-13]. In our contribution, we will discuss the synthesis, FTIR spectra and the structural investigation using the single crystal X-ray diffraction of (H2Melamine) [CuCl5]Cl, (I). The structural analysis of (I) revealed that it consists of alternating negative and positive layers running through the a-axis direction. The negative layers are built up of alternatively CuCl53- and discrete non-coordination Cl- anions, whereas the positive sheets are formed of [H2melamine2+]2 Hydrogen-bonded dimers. The N-H...N and N-H...Cl interactions are assembled to build three-dimensional H-bond patterns which insure the cohesion within the lattice (Fig. 01). A previous work showed that (I) exhibits antiferromagnetic properties [14]

The Trouble with Five: New Synthetic Strategies toward C5 -Symmetric Pillar[5]arenes and Beyond

Synlett ◽  
2019 ◽  
Vol 30 (20) ◽  
pp. 2209-2215 ◽  
Author(s):  
Ke Du ◽  
Andrew C.-H. Sue
Keyword(s):  
Building Blocks ◽  
Synthetic Route ◽  
Design And Synthesis ◽  
Supramolecular Architectures

Rim-differentiated pillar[5]arenes (P[5]s) are intriguing macrocyclic molecular platforms with C 5-symmetry, but their conventional statistical syntheses suffer from low yields and laborious separation. Our group recently reported a ‘pre-oriented’ protocol that results in highly selective production of C 5-symmetric P[5]s among four constitutional isomers. Subsequently, we devised a more general divergent synthetic route starting with a common P[5] precursor with rim differentiation, followed by a series of high-yielding reactions that permit successive transformations of both rims freely. As a result, a variety of rim-differentiated P[5]s can be made to order in gram-scale quantities. This total solution not only populates the list of C 5-symmetric P[5]s, but also enables further design and synthesis of assorted five-fold organic building blocks towards complex supramolecular architectures.

Sign in / Sign up

Export Citation Format

Share Document