Tris(pyrazolyl)borate Copper Hydroxide Complexes Featuring Tunable Intramolecular H-bonding

10.26434/chemrxiv.7878065 ◽

2019 ◽

Author(s):

Evan Gardner ◽

Caitlyn Cobb ◽

Jeffery A. Bertke ◽

Timothy H. Warren

Keyword(s):

Single Crystal ◽

Copper Hydroxide ◽

X Ray ◽

Modular Synthesis ◽

Pendant Arm ◽

Copper Center ◽

Vibrational Studies

A modular synthesis provides access to a series of new tris(pyrazolyl)borate ligands XpyMeTpK that possess a single functionalized pendant pyridyl (py) or pyrimidyl (pyd) arm designed to engage in tunable intramolecular H-bonding to metal–bound functionalities. To illustrate such H-bonding interactions, a series of [XpyMeTpCu]2(𝜇–OH)2(6a–6e) complexes were synthesized from the corresponding XpyMeTpCu–OAc (5a–5e) complexes. Single crystal X-ray structures of three new dinuclear [XpyMeTpCu]2(𝜇–OH)2complexes reveal H-bonding between the pendant heterocycle and bridging hydroxide ligands while the donor arm engages the copper center in an unusual monomeric DMAPMeTpCu–OH complex. Vibrational studies (IR) of each bridging hydroxide complex reveal reduced 𝜈OH frequencies that tracks with the H-bond accepting ability of the pendant arm.

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Electron Microscopy of Shock Loaded Polycrystalline Beryllium

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100052547 ◽

1974 ◽

Vol 32 ◽

pp. 506-507 ◽

Cited By ~ 1

Author(s):

J. M. Galbraith ◽

L. E. Murr ◽

A. L. Stevens

Keyword(s):

Electron Microscopy ◽

Wave Propagation ◽

Structural Change ◽

Single Crystal ◽

Diffraction Pattern ◽

Shock Loading ◽

Slip Systems ◽

Compression Tests ◽

X Ray Diffraction ◽

X Ray

Uniaxial compression tests and hydrostatic tests at pressures up to 27 kbars have been performed to determine operating slip systems in single crystal and polycrystal1ine beryllium. A recent study has been made of wave propagation in single crystal beryllium by shock loading to selectively activate various slip systems, and this has been followed by a study of wave propagation and spallation in textured, polycrystal1ine beryllium. An alteration in the X-ray diffraction pattern has been noted after shock loading, but this alteration has not yet been correlated with any structural change occurring during shock loading of polycrystal1ine beryllium.This study is being conducted in an effort to characterize the effects of shock loading on textured, polycrystal1ine beryllium. Samples were fabricated from a billet of Kawecki-Berylco hot pressed HP-10 beryllium.

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X-ray dislocation substructure observations and strengthening mechanisms in α-iron single crystal between room temperature and 123 K

Journal de Physique ◽

10.1051/jphys:01974003507-8055700 ◽

1974 ◽

Vol 35 (7-8) ◽

pp. 557-569 ◽

Cited By ~ 11

Author(s):

G. Coulon ◽

J. Lecoq ◽

B. Escaig

Keyword(s):

Single Crystal ◽

Room Temperature ◽

Dislocation Substructure ◽

Strengthening Mechanisms ◽

X Ray ◽

Iron Single Crystal

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Crystal structure of an inclusion complex between chiral monoaza-15-crown-5 and S(–)-1-phenyl-ethyl ammonium percholorate

Zeitschrift für Kristallographie - Crystalline Materials ◽

10.1524/zkri.218.5.381.20734 ◽

2003 ◽

Vol 218 (5) ◽

Cited By ~ 5

Author(s):

Süheyla Özbey ◽

F. B. Kaynak ◽

M. Toğrul ◽

N. Demirel ◽

H. Hoşgören

Keyword(s):

Crystal Structure ◽

Inclusion Complex ◽

Single Crystal ◽

X Ray Diffraction ◽

Space Group ◽

X Ray ◽

New Type

AbstractA new type of inclusion complex, S(–)-1 phenyl ethyl ammonium percholorate complex of R-(–)-2-ethyl - N - benzyl - 4, 7, 10, 13 - tetraoxa -1- azacyclopentadecane, has been prepared and studied by NMR, IR and single crystal X-ray diffraction techniques. The compound crystallizes in space group

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IR SPECTROSCOPY AND SINGLE CRYSTAL X-RAY DIFFRACTION STUDY OF 1,2-BIS(2-AMINOPHENOXY)-ETHANE, 1,5-BIS(2-AMINOPHENOXY)-3-OXAPENTANE, AND 1,8-BIS(2-AMINOPHENOXY)-3,6-DIOXAOCTANE

Журнал структурной химии ◽

10.15372/jsc20170106 ◽

2017 ◽

Keyword(s):

Ir Spectroscopy ◽

Single Crystal ◽

Diffraction Study ◽

X Ray Diffraction ◽

X Ray

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Single crystal X-ray diffraction study of 2,4,6-triazidopyridine and its 3,5-dibromosubstituted derivative

Журнал структурной химии ◽

10.15372/jsc20160620 ◽

2016 ◽

Keyword(s):

Single Crystal ◽

Diffraction Study ◽

X Ray Diffraction ◽

X Ray

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Single Crystal Growth of High-Pressure Phases of Ice and Salt Hydrate Far Below the Original Melting Point by Mixing Alcohol: Crystal Structure Determination of Magnesium Chloride Heptahydrate

10.26434/chemrxiv.11345063.v2 ◽

2020 ◽

Author(s):

Keishiro Yamashita ◽

Kazuki Komatsu ◽

Hiroyuki Kagi

Keyword(s):

Crystal Structure ◽

High Pressure ◽

Crystal Growth ◽

Single Crystal ◽

Room Temperature ◽

Growth Technique ◽

Salt Hydrate ◽

X Ray

An crystal-growth technique for single crystal x-ray structure analysis of high-pressure forms of hydrogen-bonded crystals is proposed. We used alcohol mixture (methanol: ethanol = 4:1 in volumetric ratio), which is a widely used pressure transmitting medium, inhibiting the nucleation and growth of unwanted crystals. In this paper, two kinds of single crystals which have not been obtained using a conventional experimental technique were obtained using this technique: ice VI at 1.99 GPa and MgCl2·7H2O at 2.50 GPa at room temperature. Here we first report the crystal structure of MgCl2·7H2O. This technique simultaneously meets the requirement of hydrostaticity for high-pressure experiments and has feasibility for further in-situ measurements.

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Tetranuclear Copper and Mononuclear Nickel Complex of the Schiff Base of (3Z)-3-Hydrazonobutan-2-One Oxime with Different Aromatic Carbonyl Compounds: Synthesis, Single Crystal X-Ray Structure, Catecholase Activity, Phenoxazinone Synthase Activity, Catalytic Study for the Homocoupling of Benzyl Amines

10.26434/chemrxiv.9632036.v1 ◽

2019 ◽

Author(s):

Swaraj Sengupta ◽

Sahanwaj Khan ◽

Shyamal K. Chattopadhyay ◽

Indrani Banerjee ◽

Tarun K. Panda ◽

...

Keyword(s):

Schiff Base ◽

Single Crystal ◽

Copper Complex ◽

Carbonyl Compounds ◽

Nickel Complex ◽

Schiff Base Ligands ◽

X Ray ◽

Phenoxazinone Synthase ◽

Catecholase Activity ◽

Aromatic Carbonyl Compounds

Synthesis and characterisation of one trinuclear copper complex, ([Cu3L3O]ClO4) (1) and one nickel complex ([Ni(L'H)2(dmso)2](ClO4)2) (2) with Schiff base ligands: (3Z)-3-((Z)-(1-(thiophen-2-yl)ethylidene)hydrazono)butan-2-one oxime (LH) and 1-(pyridin-2-yl)ethylidene)hydrazono)butan-2-one oxime (L'H). 1 shows high catecholase activity and has also been tested as a catalyst for the synthesis of benzylimine. 2 shows phenoxazinone synthase activity.

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