scholarly journals Transformation Network Culminating in a Heteroleptic Cd6L6L′2 Twisted Trigonal Prism

2020 ◽  
Vol 142 (20) ◽  
pp. 9152-9157 ◽  
Author(s):  
Dawei Zhang ◽  
Tanya K. Ronson ◽  
Lin Xu ◽  
Jonathan R. Nitschke
Keyword(s):  
Trigonal Prism

scholarly journals Crystal-to-Crystal Transformation from K2[Co(C2O4)2(H2O)2]·4H2O to K2[Co(μ-C2O4)(C2O4)]

2021 ◽  
Vol 7 (6) ◽  
pp. 77
Author(s):  
Bin Zhang ◽  
Yan Zhang ◽  
Guangcai Chang ◽  
Zheming Wang ◽  
Daoben Zhu
Keyword(s):  
Hydrogen Bond ◽  
Physical Properties ◽  
Crystal Structures ◽  
Molecular Crystal ◽  
Trigonal Prism ◽  
Space Group ◽  
Cell Parameters ◽  
Oxalate Anion ◽  
Crystal Transformation ◽  
Antiferromagnetic Ordering

Crystal-to-crystal transformation is a path to obtain crystals with different crystal structures and physical properties. K2[Co(C2O4)2(H2O)2]·4H2O (1) is obtained from K2C2O4·2H2O, CoCl2·6H2O in H2O with a yield of 60%. It is crystallized in the triclinic with space group P1 and cell parameters: a = 7.684(1) Å, b = 9.011(1) Å, c = 10.874(1) Å, α = 72.151(2)°, β = 70.278(2)°, γ = 80.430(2)°, V = 670.0(1) Å3, Z = 2 at 100 K. 1 is composed of K+, mononuclear anion [Co(C2O4)2(H2O)22−] and H2O. Co2+ is coordinated by two bidentated oxalate anion and two H2O in an octahedron environment. There is a hydrogen bond between mononuclear anion [Co(C2O4)2(H2O)22−] and H2O. K2[Co(μ-C2O4)(C2O4)] (2) is obtained from 1 by dehydration. The cell parameters of 2 are a = 8.460(5) Å, b = 6.906 (4) Å, c = 14.657(8) Å, β = 93.11(1)°, V = 855.0(8) Å3 at 100 K, with space group in P2/c. It is composed of K+ and zigzag [Co(μ-C2O4)(C2O42−]n chain. Co2+ is coordinated by two bisbendentate oxalate and one bidentated oxalate anion in trigonal-prism. 1 is an antiferromagnetic molecular crystal. The antiferromagnetic ordering at 8.2 K is observed in 2.

scholarly journals Crystal structures of [Mn(bdc)(Hspar)2(H2O)0.25]·2H2O containing MnO6+1capped trigonal prisms and [Cu(Hspar)2](bdc)·2H2O containing CuO4squares (Hspar = sparfloxacin and bdc = benzene-1,4-dicarboxylate)

2016 ◽  
Vol 72 (1) ◽  
pp. 96-101
Author(s):  
Zhe An ◽  
Jing Gao ◽  
William T. A. Harrison
Keyword(s):  
Hydrogen Bonds ◽  
Water Molecule ◽  
Crystal Structures ◽  
Metal Ion ◽  
Three Dimensional ◽  
Trigonal Prism ◽  
Planar Geometry ◽  
Cationic Complex ◽  
Counter Ion ◽  
Square Planar

The syntheses and crystal structures of 0.25-aqua(benzene-1,4-dicarboxylato-κ2O,O′)bis(sparfloxacin-κ2O,O′)manganese(II) dihydrate, [Mn(C8H4O4)(C19H22F2N4O3)2(H2O)0.25]·2H2O or [Mn(bdc)(Hspar)2(H2O)0.25]·2H2O, (I), and bis(sparfloxacin-κ2O,O′)copper(II) benzene-1,4-dicarboxylate dihydrate, [Cu(C19H22F2N4O3)2](C8H4O4)·2H2O or [Cu(Hspar)2](bdc)·2H2O, (II), are reported (Hspar = sparfloxacin and bdc = benzene-1,4-dicarboxylate). The Mn2+ion in (I) is coordinated by twoO,O′-bidentate Hspar neutral molecules (which exist as zwitterions) and anO,O′-bidentate bdc dianion to generate a distorted MnO6trigonal prism. A very long bond [2.580 (12) Å] from the Mn2+ion to a 0.25-occupied water molecule projects through a square face of the prism. In (II), the Cu2+ion lies on a crystallographic inversion centre and a CuO4square-planar geometry arises from its coordination by twoO,O′-bidentate Hspar molecules. The bdc dianion acts as a counter-ion to the cationic complex and does not bond to the metal ion. The Hspar ligands in both (I) and (II) feature intramolecular N—H...O hydrogen bonds, which closeS(6) rings. In the crystals of both (I) and (II), the components are linked by N—H...O, O—H...O and C—H...O hydrogen bonds, generating three-dimensional networks.

The crystal structure of arsenic telluroxide AsTe0.5O2

1993 ◽  
Vol 205 (1) ◽  
Author(s):  
A. C. Stergiou
Keyword(s):  
Crystal Structure ◽  
Least Squares ◽  
Single Crystals ◽  
Direct Methods ◽  
Anomalous Dispersion ◽  
Thermal Parameters ◽  
Trigonal Prism ◽  
Population Parameter ◽  
Full Matrix

AbstractSingle crystals of AsTeSolution of the structure was essentialy effected by direct methods combined with successive Fourier syntheses. The positional and anisotropic thermal parameters were refined by full-matrix least-squares calculations. Absorption and anomalous dispersion corrections were applied to all atoms. The finalThe As atom is coordinated by six O atoms forming a right trigonal prism. The Te atom site is partially occupied by Te atoms with a population parameter 0.5 and surrounded by six O atoms also forming a right trigonal prism. The structure looks like that of NiAs. Each of the AsO

Interconversion between Pd3L2 trigonal prism and Pd6L8 cube via anion exchange: binding affinity of monoatomic vs. polyatomic anions

2021 ◽  
Author(s):  
Haeri Lee ◽  
Jihun Han ◽  
Dongwon Kim ◽  
Ok-Sang Jung
Keyword(s):  
Anion Exchange ◽  
Binding Affinity ◽  
Self Assembly ◽  
Trigonal Prism ◽  
Trigonal Prisms

Systematic interconversion between trigonal prisms [Pd3X6L2] (X- = Cl-, Br-, and I-) and cubic cages [Pd6L8]12+(X-)12 (X- = BF4- with CF3SO3-) via anion exchange was established. Self-assembly of K2PdX4 (X-...

Solvothermal Syntheses and Characterization of Three Lanthanide Thioantimonates(V) with Mixed Ethylene Polyamines

2013 ◽  
Vol 68 (2) ◽  
pp. 133-137 ◽  
Author(s):  
Jian Zhou ◽  
Xing Liu ◽  
Feilong Hu
Keyword(s):  
Optical Absorption ◽  
Absorption Spectra ◽  
Trigonal Prism ◽  
Optical Absorption Spectra ◽  
Neutral Complex ◽  
Solvothermal Syntheses ◽  
Absorption Edges

Three new lanthanide thioantimonates(V) [Ln(en)(teta)(SbS4)] {Ln=Sm (1), Eu (2), Gd (3); en=ethylenediamine; teta=triethylenetetramine} have been solvothermally synthesized and structurally characterized. Compounds 1 - 3 are isostructural. The [SbS4]3- anion acting as bichelating ligand is bound to the [Ln(en)(teta)]3+ ion, resulting in a neutral complex [Ln(en)(teta)(SbS4)]. The central Ln3+ ion lies within an eight-coordinate environment forming a distorted bicapped trigonal prism LnN6S2. Although a few lanthanide thioantimonates have been reported to date, they only contain one type of ethylene polyamine. Compounds 1 - 3 are rare examples of lanthanide thioantimonates with mixed ethylene polyamine ligands. The absorption edges of 1:75 eV for 1 and 2:27 eV for 3 have been derived from optical absorption spectra.

Komplexe mit substituierten 2,5-Dihydroxy-p-benzochinonen: EA[C6(NO2)2O4] · H2O (EA = Ca, Sr)/ Complexes with Substituted 2,5-D ihydroxy-p-benzoquinones: EA [C6(NO2)2O4] · 4H2O(EA = Ca, Sr)

1987 ◽  
Vol 42 (8) ◽  
pp. 972-976 ◽  
Author(s):  
Christian Robl
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Water Molecule ◽  
Single Crystals ◽  
Coordination Sphere ◽  
Trigonal Prism ◽  
Water Molecules ◽  
Additional Water ◽  
Oxygen Atoms

AbstractSingle crystals of EA[Q(NO2)2O4] · 4H2O (EA = Ca. Sr) were grown in aqueous silicagel. Ca2+ has CN 8. It is surrounded by 4 oxygen atoms of two bis-chelating [C6(NO2)2O4]2- ions and 4 water molecules, which form a distorted, bi-capped trigonal prism. Sr2+ is coordinated similarly, with an additional water molecule joining the coordination sphere to yield CN 8+1. Corrugated chains extending along [010] and consisting of EA2+ and nitranilate ions are the main feature of the crystal structure. Adjacent chains are interlinked by hydrogen bonds.

Notizen: Anorganische Polyederverbindungen, II. Zintls „Polyanionige Salze“: Darstellung der kristallinen Verbindungen [Na4 · 7 en] Sn9, [Na4 · 5 en]Ge9 und [Na3 · 4 en] Sb7. Die Kristallstruktur des [Na4 · 7 en] Sn9 / Inorganic Polyhedral Compounds, II. Inorganic Polyhedral Compoinds, II1 Zintl’s “Polyanionic Salts”: Synthesis of the Crystalline Compounds [Na4 · 7 en]Sn9, [Na4 · 5 en]Ge9 and [Na3 · 4 en]Sb7. The Crystal Structure of [Na4 · 7 en]Sn9

1976 ◽  
Vol 31 (4) ◽  
pp. 522-524 ◽  
Author(s):  
L. Diehl ◽  
K. Khodadadeh ◽  
D. Kummer ◽  
J. Strähle
Keyword(s):  
Crystal Structure ◽  
Trigonal Prism ◽  
High Yield ◽  
Synthetic Method ◽  
Tricapped Trigonal Prism

Upon use of a synthetic method reported earlier by us respective alloys of Na/Sn, Na/Ge and Na/Sb are dissolved in ethylenediamine and the title compounds precipitated from the solutions in high yield. By recrystallisation well shaped, stable crystals are obtained. The crystal structure of [Na4 · 7 en]Sn9 confirms the presence of a Sn94---polyhedron which had been suggested by us on the basis of other investigations. The Sn94--polyhedron may be described as a distorted tricapped trigonal prism. Ethylenediamine is coordinated to Na+-ions exclusively.

scholarly journals Anion Pairs Template a Trigonal Prism with Disilver Vertices

2019 ◽  
Vol 141 (29) ◽  
pp. 11409-11413 ◽  
Author(s):  
John P. Carpenter ◽  
Charlie T. McTernan ◽  
Tanya K. Ronson ◽  
Jonathan R. Nitschke
Keyword(s):  
Trigonal Prism

Phase transition and superconductivity in ReS2, ReSe2 and ReTe2

2018 ◽  
Vol 20 (46) ◽  
pp. 29472-29479 ◽  
Author(s):  
Jurong Zhang ◽  
Ermiao Sun ◽  
Xiaolei Feng ◽  
Hanyu Liu ◽  
Simon A. T. Redfern ◽  
...  
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
High Pressures ◽  
Trigonal Prism ◽  
Coordination Environment

Five energetically stable phases of P1̄′, P63/mmc, I41/amd, I4/mmm and I4/mmm′ were predicted in the ReX2 family of compounds at high pressures. The coordination environment of a Re atom changes from a ReX6 octahedron or a trigonal prism to a ReX8 cuboid coordination with increasing pressure. The high-pressure metallic phases of ReX2 exhibit superconductivity.

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