Antimonato Polyoxovanadate Based Three-Dimensional Framework Exhibiting Ferromagnetic Exchange Interactions: Synthesis, Structural Characterization, and Magnetic Investigation of {[Fe(C6H14N2)2]3[V15Sb6O42(H2O)]}·8H2O

2013 ◽  
Vol 52 (6) ◽  
pp. 3280-3284 ◽  
Author(s):  
Adam Wutkowski ◽  
Christian Näther ◽  
Paul Kögerler ◽  
W. Bensch
Keyword(s):  
Structural Characterization ◽  
Three Dimensional ◽  
Exchange Interactions ◽  
Ferromagnetic Exchange ◽  
Magnetic Investigation

scholarly journals Low pH constructed Co(ii) and Ni(ii) 1D coordination polymers based on Cα-substituted analogues of zoledronic acid: structural characterization, and spectroscopic and magnetic properties

RSC Advances ◽  
2019 ◽  
Vol 9 (54) ◽  
pp. 31497-31510 ◽  
Author(s):  
Tomasz Rojek ◽  
Waldemar Goldeman ◽  
Katarzyna Ślepokura ◽  
Marek Duczmal ◽  
Agnieszka Wojciechowska ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Zoledronic Acid ◽  
Coordination Polymers ◽  
Structural Characterization ◽  
Exchange Interactions ◽  
Low Ph ◽  
Metal Centers ◽  
Ferromagnetic Exchange

1D Co(ii)/Ni(ii) coordination polymers with alternating antiferromagnetic–ferromagnetic exchange interactions between metal centers propagated through double (–O–P–O–)2 bridges.

scholarly journals A Novel Family of Triangular CoII2LnIII and CoII2YIII Clusters by the Employment of Di-2-Pyridyl Ketone

2019 ◽  
Vol 5 (2) ◽  
pp. 35 ◽  
Author(s):  
Constantinos G. Efthymiou ◽  
Áine Ní Fhuaráin ◽  
Júlia Mayans ◽  
Anastasios Tasiopoulos ◽  
Spyros P. Perlepes ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Solid State ◽  
Structural Characterization ◽  
Metal Clusters ◽  
Variable Temperature ◽  
Ac Susceptibility ◽  
Exchange Interactions ◽  
Ac Magnetic Susceptibility ◽  
Ferromagnetic Exchange ◽  
Weak Ferromagnetic

The synthesis, structural characterization and magnetic study of novel CoII/4f and CoII/YIII clusters are described. In particular, the initial employment of di-2-pyridyl ketone, (py)2CO, in mixed metal Co/4f chemistry, provided access to four triangular clusters, [CoII2MIII{(py)2C(OEt)(O)}4(NO3)(H2O)]2[M(NO3)5](ClO4)2 (M = Gd, 1; Dy, 2; Tb, 3; Y, 4), where (py)2C(OEt)(O)− is the monoanion of the hemiketal form of (py)2CO. Clusters 1–4 are the first reported Co/4f (1–3) and Co/Y (4) species bearing (py)2CO or its derivatives, despite the fact that over 200 metal clusters bearing this ligand have been reported so far. Variable-temperature, solid-state dc and ac magnetic susceptibility studies were carried out on 1–4 and revealed the presence of weak ferromagnetic exchange interactions between the metal ions (JCo-Co = +1.3 and +0.40 cm−1 in 1 and 4, respectively; JCo-Gd = +0.09 cm−1 in 1). The ac susceptibility studies on 2 revealed nonzero, weak out-of-phase (χ’’M) signals below ~5 K.

scholarly journals Controlling dipolar exchange interactions in a dense three-dimensional array of large-spin fermions

2020 ◽  
Vol 2 (2) ◽  
Author(s):  
A. Patscheider ◽  
B. Zhu ◽  
L. Chomaz ◽  
D. Petter ◽  
S. Baier ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Exchange Interactions ◽  
Dimensional Array ◽  
Large Spin

Design, synthesis, and three-dimensional structural characterization of a constrained Ω-loop excised from interleukin-1α

Tetrahedron ◽  
1993 ◽  
Vol 49 (17) ◽  
pp. 3629-3640 ◽  
Author(s):  
Ramakanth Sarabu ◽  
Kathleen Lovey ◽  
Vincent S. Madison ◽  
David C. Fry ◽  
David N. Greeley ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Three Dimensional ◽  
Design Synthesis ◽  
Interleukin 1Α

scholarly journals Synthesis and structural characterization of hexa-μ2-chlorido-μ4-oxido-tetrakis{[4-(phenylethynyl)pyridine-κN]copper(II)} dichloromethane monosolvate

2021 ◽  
Vol 77 (1) ◽  
pp. 42-46
Author(s):  
Rayya A. Al Balushi ◽  
Muhammad S. Khan ◽  
Md. Serajul Haque Faizi ◽  
Ashanul Haque ◽  
Kieran Molloy ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Structural Characterization ◽  
Title Compound ◽  
Three Dimensional ◽  
Hirshfeld Surface ◽  
The Core ◽  
Dimensional Network ◽  
Packing Arrangement

In the crystal structure of the title compound, [Cu4Cl6O(C13H9N)4]·CH2Cl2, the core molecular structure consists of a Cu4 tetrahedron with a central interstitial O atom. Each edge of the Cu4 tetrahedron is bridged by a chlorido ligand. Each copper(II) cation is coordinated to the central O atom, two chlorido ligands and one N atom of the 4-phenylethynylpyridine ligand. In the crystal, the molecules are linked by intermolecular C—H...Cl interactions. Furthermore, C—H...π and π–π interactions also connect the molecules, forming a three-dimensional network. Hirshfeld surface analysis indicates that the most important contributions for the packing arrangement are from H...H and C...H/H...C interactions.

Structural Characterization of Linear Three-Dimensional Random Chains: Energetic Behaviour and Anisotropy

2021 ◽  
pp. 179-191
Author(s):  
David R. Avellaneda B. ◽  
Ramón E. R. González ◽  
Paola Ariza-Colpas ◽  
Roberto Cesar Morales-Ortega ◽  
Carlos Andrés Collazos-Morales
Keyword(s):  
Structural Characterization ◽  
Three Dimensional

scholarly journals Magnetic Investigation of an Atypical Three-Dimensional Bimetallic Oxalate-Based Magnet

2019 ◽  
Vol 124 (1) ◽  
pp. 952-957 ◽  
Author(s):  
Virginie Simonet ◽  
Françoise Damay ◽  
Sylvie Ferlay ◽  
Andrew Cea ◽  
Catalin Maxim ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Magnetic Investigation

scholarly journals Structural Basis for Env Incorporation into HIV-1 Particles

Proceedings ◽  
2020 ◽  
Vol 50 (1) ◽  
pp. 114
Author(s):  
R. Elliot Murphy ◽  
Alexandra B. Samal ◽  
Gunnar Eastep ◽  
Ruba H. Ghanam ◽  
Peter E. Prevelige ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Late Phase ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Structural Basis ◽  
Membrane Interactions ◽  
Env Protein ◽  
Gag Assembly ◽  
Hiv 1

During the late phase of the HIV-1 replication cycle, the Gag polyproteins are transported to the plasma membrane (PM) for assembly. Gag targeting and assembly on the PM is dependent on interactions between its matrix (MA) domain and phosphatidylinositol-4,5-bisphosphate (PI(4,5)P2). Subsequent to Gag assembly, the envelope (Env) protein is recruited to the PM for incorporation into virus particles. Evidence suggests that the incorporation of the Env protein is mediated by interactions between the MA domain of Gag and the cytoplasmic tail of the gp41 subunit of Env (gp41CT), a mechanism that remains to be elucidated. Trimerization of the MA domain of Gag appears to be an obligatory step for this interaction. The interplay between gp41CT, the MA trimer, and the membrane has yet to be determined. Our lab has pioneered methods and approaches to investigate, at the molecular level, how the retroviral MA domains of Gag interact with membranes, a key requirement for understanding the Gag assembly and Env incorporation. Herein, we devised innovative approaches that will enable the structural characterization of the gp41CT–MA–membrane interactions. We employed structural biology (NMR and cryo-electron microscopy, biophysical methods, and biochemical tools to generate a macromolecular picture of how the MA domain of Gag binds to the membrane and how it interacts with gp41CT. To this end, we: (i) determined the three-dimensional structure of HIV-1 gp41CT and characterized its interaction with the membrane, (ii) engineered trimeric constructs of gp41CT and the MA to recapitulate the native and functional states of the proteins, and (iii) utilized membrane nanodisc technology to anchor the MA and gp41CT proteins. Our studies will allow for a detailed structural characterization of the gp41CT–MA–membrane interactions, which will advance our knowledge of HIV-1 Gag assembly and Env incorporation.

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