scholarly journals X-ray Diffraction Analysis of Ti-18 mol%Nb Based Shape Memory Alloys Containing 3d Transition Metal Elements

2006 ◽  
Vol 47 (4) ◽  
pp. 1209-1213 ◽  
Author(s):  
Yosuke Horiuchi ◽  
Tomonari Inamura ◽  
Hee Young Kim ◽  
Syuichi Miyazaki ◽  
Kenji Wakashima ◽  
...  
Keyword(s):  
Transition Metal ◽  
Shape Memory Alloys ◽  
Diffraction Analysis ◽  
Shape Memory ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Elements ◽  
Transition Metal Elements

Two Zr−based heterometal−organic frameworks for efficient CO2 reduction under visible light

CrystEngComm ◽  
2021 ◽  
Author(s):  
Ying Wang ◽  
Yao-mei Fu ◽  
Si-qi You ◽  
xuexin Li ◽  
Xinlong Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Visible Light ◽  
Single Crystal ◽  
Diffraction Analysis ◽  
Co2 Reduction ◽  
X Ray Diffraction ◽  
Transition Metal Cations ◽  
One Pot ◽  
X Ray ◽  
Secondary Building Units

Two new zirconium−based heterometal−organic frameworks, Zr3CP3−Mn (1) and Zr3CP3−Ni (2) constructed from [Cp3Zr3(μ3−O)(μ2−OH)3(IN)3] secondary building units and transition metal cations, were successfully synthesized through one−pot method. Single-crystal X-ray diffraction analysis...

scholarly journals Soft X-ray Emission Spectroscopy on Chemical States of 3D-Transition Metal Elements with SEM

2015 ◽  
Vol 21 (S3) ◽  
pp. 2355-2356
Author(s):  
M. Terauchi ◽  
H. Takahashi ◽  
T. Murano ◽  
T. Imazono ◽  
M. Koike ◽  
...  
Keyword(s):  
Transition Metal ◽  
Emission Spectroscopy ◽  
X Ray ◽  
Metal Elements ◽  
Chemical States ◽  
Transition Metal Elements

The Stress Relaxation Characteristic and Martensitic Transformation of Fe-Mn-Si Shape Memory Alloys under Different Deformation Condition

2012 ◽  
Vol 430-432 ◽  
pp. 106-109
Author(s):  
Lin Lin Liu ◽  
Cheng Xin Lin ◽  
Chao Yu Zhou
Keyword(s):  
Martensitic Transformation ◽  
Stress Relaxation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Xrd Analysis ◽  
Deformation Condition ◽  
X Ray Diffraction ◽  
X Ray

The stress relaxation characteristic and martensitic transformation in Fe-Mn-Si shape memory alloys under different deformation condition are studied by X-Ray Diffraction (XRD) analysis and TEM observation. The results show that the amount of stress induced ε martensitic quickly increases when the suspending loading time below 10min (0~10min), and the increasing speed of ε martensitic gradually become slower when the suspending loading time above 10min. This is owing to the stabilization of stress induced ε martensitic. The stress relaxation ratio of Fe-17Mn-5Si-10Cr-5Ni and Fe-17Mn-5Si-2Cr-2Ni-1V alloys increase with increasing the suspending loading time, and the relaxation ratio of Fe-17Mn-5Si-2Cr-2Ni-1V alloy is obviously lower than that of Fe-17Mn-5Si-10Cr-5Ni alloy.

Boriding of Binary Ni–Ti Shape Memory Alloys

2016 ◽  
Vol 71 (11) ◽  
pp. 1017-1020
Author(s):  
Nazim Ucar ◽  
Sule Dogan ◽  
Mustafa Serdar Karakas ◽  
Adnan Calik
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Solid Medium ◽  
High Hardness ◽  
Boride Layer ◽  
Growth Rate Constant ◽  
X Ray Diffraction ◽  
X Ray ◽  
Parabolic Relationship

AbstractBoriding of binary Ni–Ti shape memory alloys was carried out in a solid medium at 1273 K for 2, 4, 6, and 8 h using the powder pack method with proprietary Ekabor–Ni powders. Characterization of the boride layer formed on the surface of alloys was done by optical microscopy and scanning electron microscopy. The presence of boride, silicide, and borosilicide phases in the boride layers was confirmed by X-ray diffraction analysis. The thickness and microhardness of the boride layers increased with increasing boriding time. Hardness profiles showed a rapid decrease in hardness moving from the boride layer to the main structure. The high hardness of the boride layer was attributed mainly to the formation of TiB2. A parabolic relationship was observed between layer thickness and boriding time, and the growth rate constant for the boriding treatment was calculated as 0.62×10−8 cm2 s−1.

Ubergangsmetall-substituierte Phosphane, Arsane und Stibane, LIX [1], Ein Addukt des Me3P-substituierten Ferrio-diphenylphosphans Cp(OC)(Me3P)Fe-PPh2 mit Methylisothiocyanat: Darstellung, Protonierung und Methylierung / Transition Metal Substituted Phosphanes, Arsanes and Stibanes, LIX [1]. An Adduct of the Me3P-Substituted Ferrio-diphenylphosphane Cp(OC)(Me3P)Fe-PPh2 and Methylisothiocyanate: Synthesis, Protonation, and Methylation

1998 ◽  
Vol 53 (10) ◽  
pp. 1077-1083 ◽  
Author(s):  
Wolfgang Malisch ◽  
Andre Spörl ◽  
Katharina Thirase ◽  
Oliver Fey
Keyword(s):  
Nitrogen Atom ◽  
Transition Metal ◽  
Diffraction Analysis ◽  
Sulfur Atom ◽  
Substitution Reaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Co Substitution

AbstractTreatment of the ferrio-phosphane Cp(OC)2Fe-PPh2 (1) with Me3P (2) yields Cp(OC)(Me3P)Fe-PPh2 (3) via CO-substitution. Reaction of 3 with methylisothiocyanate (4) leads to the formation of the adduct Cp(OC)(Me3P)Fe-PPh2 -C(S)NMe (5), which is regioselectively methylated at the sulfur atom with Mel (6a) or MeSO3CF3 (6b), respectively, to give the cationic complexes [Cp(OC)(Me3P)Fe-PPh2 -C(SMe)=NMe]I/CF3 SO3(7a,b). In contrast, protonation with CF3SO3H (8 ) occurs at the nitrogen atom, yielding [Cp(OC)(Me3P)Fe-PPh2- C(S)-N(H)Me]CF3SO3 (9). The structures of 7b and 9 have been determined by X-ray diffraction analysis

scholarly journals Synthesis and Crystal Structure of a Novel Octahedral Fe4Cr2 Transition Metal Cluster Complex Cp2Cr2Fe4(CO)12(μ6-O)

1999 ◽  
Vol 23 (6) ◽  
pp. 388-389
Author(s):  
Li-Cheng Song ◽  
Wen-Qi Gao ◽  
Xiao-Ying Huang
Keyword(s):  
Crystal Structure ◽  
Transition Metal ◽  
Diffraction Analysis ◽  
Metal Cluster ◽  
Cluster Complex ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Transition Metal Cluster

Reaction of Cp(OC)2Cr=S = Cr(CO)2Cp with Fe3(CO)12 affords an encapsulated μ6-O octahedral Fe4Cr2 cluster complex Cp2Cr2Fe4(CO)12(μ6-O), whose crystal structure is determined by X-ray diffraction analysis.

scholarly journals Synthesis and Characterization of a Binuclear Copper(II)-dipyriamethyrin Complex: [Cu2(dipyriamethyrin)(μ2-1,1-acetato)2]

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1446
Author(s):  
James T. Brewster ◽  
Harrison D. Root ◽  
Hadiqa Zafar ◽  
Gregory D. Thiabaud ◽  
Adam C. Sedgwick ◽  
...  
Keyword(s):  
Transition Metal ◽  
Diffraction Analysis ◽  
Synthesis And Characterization ◽  
Allosteric Effect ◽  
X Ray Diffraction ◽  
Binuclear Copper ◽  
X Ray ◽  
Monomeric Complex ◽  
Binuclear Species

The reaction between dipyriamethyrin and copper(II) acetate [Cu(OAc)2] afforded what is, to our knowledge, the first transition metal-dipyriamethyrin complex. Molecular and electronic characterization of this binuclear Cu(II) complex via EPR, UV-vis, and single crystal X-ray diffraction analysis revealed marked differences between the present constructs and previously reported binuclear copper(II) hexaphyrin species. UV-vis titration analyses provided evidence for a homotropic positive allosteric effect, wherein the binuclear species is formed without significant intermediacy of a monomeric complex.

Gehinderte Ligandbewegungen in Übergangsmetallkomplexen, XLII [1]: Photoreaktionen von Hexacarbonyl-μ-η5:5-fulvalen-dimolybdän und -diwolfram mit konjugierten Dienen / Hindered Ligand Movements in Transition Metal Complexes, XLII [1]: Photoreactions of Hexacarbonyl-μ–η5:5-fulvalene-dimolybdenum and -ditungsten with Conjugated Dienes

1993 ◽  
Vol 48 (11) ◽  
pp. 1635-1650 ◽  
Author(s):  
Cornelius G. Kreiter ◽  
Wolfgang Conrad ◽  
Reiner Exner
Keyword(s):  
Molecular Structure ◽  
Transition Metal ◽  
Diffraction Analysis ◽  
Transition Metal Complexes ◽  
Energy Barrier ◽  
Crystal And Molecular Structure ◽  
Conjugated Dienes ◽  
Photochemical Reactions ◽  
X Ray Diffraction ◽  
X Ray

Photochemical reactions of hexacarbonyl-μ-η5:5-fulvalene-dimolybdenum (1) with 1,3-butadiene (a), 2-methyl-1,3-butadiene (b), E-1,3-pentadiene (c), 2,3-dimethyl-1,3-butadiene (d), and E-3-methyl-1,3-pentadiene (e) yield the corresponding tetracarbonyl-η4-s-cisdiene-μ-η5:5-fulvalene-dimolybdenum complexes 3a-3e. In addition to 3a also η4-s-trans1,3-butadiene-tetracarbonyl-μ-η5:5-fulvalene-dimolybdenum (4) is formed. Similarily hexacarbonyl-μ-η5:5-fulvalene-ditungsten (2) forms with a and b tetracarbonyl-η4-s-cis-diene-μ-η5:5-fulvalene-ditungsten (5a, 5b) and bis(η4-s-cis-1,3-butadiene)-dicarbonyl-μ-η5:5-fulvalene-ditungsten (6). The complexes 3b —3e and also 5b are obtained as mixtures of the o- and u-isomers. Only for tetracarbonyl-η4-cis-2,3-dimethyl-1,3-butadiene-μ-η5:5-fulvalene-dimolybdenum (3d) an interconversion of the o- and u-isomers is observed with an energy barrier of ΔG183# = 73.9 kJ/mol. Both isomers of 3d show hindered inversions with energy barriers of ΔG#313 = 66.1 kJ/mol (u-3d) and ΔG183# = 36.4 kJ/mol (o-3d). For o-3d the crystal and molecular structure was determined by an X-ray diffraction analysis. Hexacarbonylµ — η5:5-bis(cyclopentadiendiyl)methane-dimolybdenum (7), hexacarbonyl-μ-η5:5-bis(cyclopentadiendiyl)ethane-dimolybdenum and hexacarbonyl-μ-η5:5-bis(cyclopentadiendiyl)propane-dimolybdenum do not react with conjugated dienes. Upon UV irradiation 7 looses CO and forms by dimerization octacarbonyl-bis(μ-η5:5-(cyclopentadiendiyl-cyclopentadien-triyl)methane)-dihydrido-tetramolybdenum (8).

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