scholarly journals Non-covalent Interactions in Metal Complexes. II. Induction of Asymmetry in Cobalt(III) Complexes with Amino Acid–Schiff Bases. Importance of CH···π-Interaction in Determining Configuration of Complexes

1980 ◽  
Vol 53 (8) ◽  
pp. 2248-2251 ◽  
Author(s):  
Hisashi Okawa ◽  
Yoshihiko Numata ◽  
Ayako Mio ◽  
Sigeo Kida
Keyword(s):  
Amino Acid ◽  
Metal Complexes ◽  
Schiff Bases ◽  
Non Covalent Interactions ◽  
Covalent Interactions

scholarly journals 1,3,5-Triaza-7-Phosphaadamantane (PTA) as a 31P NMR Probe for Organometallic Transition Metal Complexes in Solution

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1390 ◽  
Author(s):  
Ilya G. Shenderovich
Keyword(s):  
Chemical Shift ◽  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Density Functional ◽  
Molecular Structures ◽  
Basis Sets ◽  
Functional Theory ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Due to the rigid structure of 1,3,5-triaza-7-phosphaadamantane (PTA), its 31P chemical shift solely depends on non-covalent interactions in which the molecule is involved. The maximum range of change caused by the most common of these, hydrogen bonding, is only 6 ppm, because the active site is one of the PTA nitrogen atoms. In contrast, when the PTA phosphorus atom is coordinated to a metal, the range of change exceeds 100 ppm. This feature can be used to support or reject specific structural models of organometallic transition metal complexes in solution by comparing the experimental and Density Functional Theory (DFT) calculated values of this 31P chemical shift. This approach has been tested on a variety of the metals of groups 8–12 and molecular structures. General recommendations for appropriate basis sets are reported.

scholarly journals Synthesis, Characterization, and Non-Covalent Interactions of Palladium(II)-Amino Acid Complexes

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4331
Author(s):  
David B. Hobart ◽  
Michael A. G. Berg ◽  
Hannah M. Rogers ◽  
Joseph S. Merola
Keyword(s):  
Amino Acid ◽  
High Resolution Mass Spectrometry ◽  
Resonance Spectroscopy ◽  
Spectroscopic Techniques ◽  
X Ray Diffraction ◽  
Amino Acid Complexes ◽  
Acetone Water ◽  
Square Planar ◽  
Non Covalent Interactions ◽  
Covalent Interactions

The reaction of palladium(II) acetate with acyclic amino acids in acetone/water yields square planar bis-chelated palladium amino acid complexes that exhibit interesting non-covalent interactions. In all cases, complexes were examined by multiple spectroscopic techniques, especially HRMS (high resolution mass spectrometry), IR (infrared spectroscopy), and 1H NMR (nuclear magnetic resonance) spectroscopy. In some cases, suitable crystals for single crystal X-ray diffraction were able to be grown and the molecular structure was obtained. The molecular geometries of the products are discussed. Except for the alanine complex, all complexes incorporate water molecules into the extended lattice and exhibit N-H···O and/or O···(HOH)···O hydrogen bonding interactions. The non-covalent interactions are discussed in terms of the extended lattice structures exhibited by the structures.

Non-covalent interactions in coinage metal complexes of 1,2,4-triazole-based N-heterocyclic carbenes

2014 ◽  
Vol 43 (41) ◽  
pp. 15465-15474 ◽  
Author(s):  
Jan Turek ◽  
Illia Panov ◽  
Petr Švec ◽  
Zdeňka Růžičková ◽  
Aleš Růžička
Keyword(s):  
Metal Complexes ◽  
Heterocyclic Carbenes ◽  
Coinage Metal ◽  
Complete Series ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Non-covalent interactions were revealed in the complete series of coinage metal complexes of the type (NHC)MX (M = Cu, Ag, Au; X = Cl, Br, I) bearing 1,2,4-triazole based NHCs.

scholarly journals Fluorescent supramolecular hydrogels self-assembled from tetraphenylethene (TPE)/single amino acid conjugates

RSC Advances ◽  
2018 ◽  
Vol 8 (37) ◽  
pp. 20922-20927 ◽  
Author(s):  
Nien-Tzu Chu ◽  
Rajan Deepan Chakravarthy ◽  
Nai-Chia Shih ◽  
Yen-Hsu Lin ◽  
Yen-Chu Liu ◽  
...  
Keyword(s):  
Amino Acid ◽  
Single Amino Acid ◽  
Amino Acid Conjugates ◽  
Non Covalent Interactions ◽  
Ph Conditions ◽  
Self Assembled ◽  
Covalent Interactions

TPE-Ser molecules exhibit non-covalent interactions necessary for hydrogelation under physiological pH conditions.

Antioxidant activity of bovine serum albumin binding amino acid Schiff-bases metal complexes

2007 ◽  
Vol 18 (11) ◽  
pp. 1416-1418 ◽  
Author(s):  
Rong Min Wang ◽  
Juan Juan Mao ◽  
Jing Feng Song ◽  
Cai Xia Huo ◽  
Yu Feng He
Keyword(s):  
Antioxidant Activity ◽  
Amino Acid ◽  
Bovine Serum Albumin ◽  
Serum Albumin ◽  
Metal Complexes ◽  
Schiff Bases ◽  
Bovine Serum ◽  
Albumin Binding ◽  
Bovine Serum Albumin Binding

Photophysical properties of di-Schiff bases: evaluating the synergistic effect of non-covalent interactions and alkyl spacers in enhanced emissions of solids

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 57780-57792 ◽  
Author(s):  
Moyna Das ◽  
Fayaz Baig ◽  
Madhushree Sarkar
Keyword(s):  
Solid State ◽  
Synergistic Effect ◽  
Schiff Bases ◽  
Photophysical Properties ◽  
Light Emitting ◽  
Emission Properties ◽  
Flexible Spacer ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Di-Schiff bases with alkyl spacer (ethyl, butyl and hexyl) showed enhanced light emitting properties in solid state, while quenching was observed for di-Schiff bases with hydrazine spacer. Packing of the molecules via non covalent interactions along with the flexible spacer played the role in dictating the emission properties.

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