scholarly journals Network Formation via Anion Coordination: Crystal Structures Based on the Interplay of Non-Covalent Interactions

Molecules ◽  
2018 ◽  
Vol 23 (3) ◽  
pp. 572 ◽  
Author(s):  
Matteo Savastano ◽  
Carla Bazzicalupi ◽  
Palma Mariani ◽  
Antonio Bianchi
Keyword(s):  
Crystal Structures ◽  
Network Formation ◽  
Anion Coordination ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Stepwise enhancement of fluorescence induced by anion coordination and non-covalent interactions

2021 ◽  
Vol 50 (1) ◽  
pp. 76-80
Author(s):  
Dan Zhang ◽  
Jie Zhao ◽  
Liping Cao ◽  
Dong Yang ◽  
Bozhong Chen ◽  
...  
Keyword(s):  
Methyl Viologen ◽  
Fluorescence Enhancement ◽  
Anion Coordination ◽  
Non Covalent Interactions ◽  
Multi Level ◽  
Covalent Interactions

A multi-level fluorescence enhancement was presented by a bis–bis(urea)-decorated tetraphenylethene ligand through anion coordination and binding of methyl viologen.

The interplay of non-covalent interactions determining the antiparallel conformation of (isocyanide)gold(i) dimers

CrystEngComm ◽  
2018 ◽  
Vol 20 (28) ◽  
pp. 3987-3993 ◽  
Author(s):  
Jorge Echeverría
Keyword(s):  
Crystal Structures ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Ligand⋯ligand contacts, including a novel n → π* interaction involving an isocyanide group as the acceptor, determine the persistent antiparallel conformation of dimers of (isocyanide)Au(i) complexes in their crystal structures.

scholarly journals Crystal structures ofp-substituted derivatives of 2,6-dimethylbromobenzene with ½ ≤Z′ ≤ 4

2016 ◽  
Vol 72 (12) ◽  
pp. 1762-1767
Author(s):  
Angélica Navarrete Guitérrez ◽  
Gerardo Aguirre Hernández ◽  
Sylvain Bernès
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Crystal Structures ◽  
Functional Group ◽  
Molecular Symmetry ◽  
Asymmetric Unit ◽  
Structure Feature ◽  
Non Covalent Interactions ◽  
Derivatives Of ◽  
Covalent Interactions

The crystal structures of four bromoarenes based on 2,6-dimethylbromobenzene are reported, which are differentiated according the functional groupXplacedparato the Br atom:X= CN (4-bromo-3,5-dimethylbenzonitrile, C9H8BrN), (1),X= NO2(2-bromo-1,3-dimethyl-5-nitrobenzene, C8H8BrNO2), (2),X= NH2(4-bromo-3,5-dimethylaniline, C8H10BrN), (3) andX= OH (4-bromo-3,5-dimethylphenol, C8H9BrO), (4). The content of the asymmetric unit is different in each crystal,Z′ = ½ (X= CN),Z′ = 1 (X= NO2),Z′ = 2 (X= NH2), andZ′ = 4 (X= OH), and is related to the molecular symmetry and the propensity ofXto be involved in hydrogen bonding. In none of the studied compounds does the crystal structure feature other non-covalent interactions, such as π–π, C—H...π or C—Br...Br contacts.

Influence of counterions on the supramolecular frameworks of isoquinoline-based silver(i) complexes

CrystEngComm ◽  
2020 ◽  
Vol 22 (1) ◽  
pp. 95-104
Author(s):  
Nicole Parra-Muñoz ◽  
Paulina I. Hidalgo ◽  
Gerardo Ripoll ◽  
Julio Belmar ◽  
Jorge Pasán ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Crystal structures of seven new Ag(i) complexes with bis(1-isoquinolinecarboxamide)alkane derivatives were analyzed in terms of the coordinative ability and participation in non-covalent interactions of several counterions.

Anisotropic Composites of Desaminotyrosine and Desaminotyrosyl Tyrosine Functionalized Gelatin and Bioactive Glass Microparticles

2015 ◽  
Vol 1718 ◽  
pp. 9-14
Author(s):  
Konstanze K. Julich-Gruner ◽  
Andreas Lendlein ◽  
Aldo R. Boccaccini ◽  
Axel T. Neffe
Keyword(s):  
Mechanical Properties ◽  
Bioactive Glass ◽  
Network Formation ◽  
Loss Modulus ◽  
Tensile Tests ◽  
Non Covalent Interactions ◽  
Further Development ◽  
Covalent Interactions ◽  
Thermal Stability Of

ABSTRACTFunctionalization of gelatin with desaminotyrosine (DAT) and desamino tyrosyl tyrosine (DATT) has been demonstrated to allow network formation based on non-covalent interactions of the aromatic moieties. Based on the observation that the DAT(T) groups furthermore could interact with hydroxyapatite fillers, here it was investigated whether such interactions of DAT(T) could also be employed to stabilize composites formed by functionalized gelatins and bioactive glass (BG) particles. Because of sedimentation of the BG microparticles during the gelification, anisotropic composites with two distinct layers were formed. The characterization of mechanical properties by tensile tests and rheology showed that all composites of non-functionalized and DAT(T) functionalized gelatins with BG microparticles showed an increased Young’s modulus (E) up to 3 MPa, an increased storage modulus (G’) up to 100 kPa, increased tensile strength (σmax) up to 3.4 MPa, and increased loss modulus (G’’) compared to the pure matrices. As the observed effects were more pronounced in the DAT(T) functionalized gelatins compared to non-functionalized gelatins, and a much increased thermal stability of these composites was found, it is likely that there are binding interactions between the aromatic moieties and the BG microparticles. This effect open opportunities for the further development of this type of gelatin-based composites for bone regeneration applications.

π-Backbonding and non-covalent interactions in the JohnPhos and polyfluorothiolate complexes of gold(i)

2017 ◽  
Vol 46 (37) ◽  
pp. 12456-12465 ◽  
Author(s):  
Guillermo Moreno-Alcántar ◽  
Kristopher Hess ◽  
José Manuel Guevara-Vela ◽  
Tomás Rocha-Rinza ◽  
Ángel Martín Pendás ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Experimentally observed gold bonding interactions in crystal structures were examined through wavefunction analyses, such as QTAIM and the NCI-index.

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