Investigation on Molecular and Crystal Structures of Metal Complexes with Aminopolycarboxylic Acids——Synthesis and Structure of K[In~Ⅲ(EDTA)(H_2O)]·2H_2O

１ＩｎｔｒｏｄｕｃｔｉｏｎＲａｒｅｄｉｓｐｅｒｓｉｖｅｅｌｅｍｅｎｔｓＧａ,ＩｎａｎｄＴｌｆｏｒｍｔｈｅｃｏｍｐｌｅｘｅｓｏｆｄｉｆｅｒｅｎｔｃｏｏｒｄｉｎａｔｅｎｕｍｂｅｒ（ＣＮ）ｏｒｃｏｏｒｄｉｎａｔｅｓｔｒｕｃｔｕｒｅ（ＣＳ）ｗｉｔｈａｍｉｎ...     

Mechanical properties and creep resistance of Mg-Li composites reinforced by MgO/Mg_2Si particles

1　ＩＮＴＲＯＤＵＣＴＩＯＮＭｇ Ｌｉａｌｌｏｙｉｓａｎｅｗａｎｄｓｕｐｅｒ ｌｉｇｈｔｓｔｒｕｃｔｕｒａｌｍａ ｔｅｒｉａｌ.Ｉｔｉｓｗｉｄｅｌｙｕｓｅｄｉｎｓｐａｃｅａｎｄｗｅａｐｏｎｉｎｄｕｓｔｒｙｂｅｃａｕｓｅｏｆｈｉｇｈｅｒｓｐｅｃｉｆｉｃｓｔｒｅｎｇｔｈａｎｄｒｉｇｉｄｉｔｙ .Ｓｏｍｅｒｅｓｅａｒｃｈ[1～8] ｉｎｄｉｃａｔｅｄｔｈａｔ:1 )ｔｈｅｓｔｒｅｎｇｔｈｏｆｂｉｎａｒｙａｌｌｏｙｉｓｌｏｗｅｒａｎｄｔｈｅｃｒｅｅｐｒｅｓｉｓｔａｎｃｅｉｓｖｅｒｙｐｏｏｒ;2 )ｔｈｅｓｔｒｅｎｇｔｈｃａ…     

Relaxation of residual stresses in 20%SiC_w/6061Al composite as-extruded at high temperature

1　ＩＮＴＲＯＤＵＣＴＩＯＮＡｌｕｍｉｎｕｍｍａｔｒｉｘｃｏｍｐｏｓｉｔｅｒｅｉｎｆｏｒｃｅｄｗｉｔｈｓｉｌｉ ｃｏｎｃａｒｂｉｄｅｗｈｉｓｋｅｒ (ＳｉＣｗ/Ａｌ)ａｓａｎｅｗｔｙｐｅｏｆｓｔｒｕｃｔｕｒａｌｍａｔｅｒｉａｌｎｏｔｏｎｌｙｈａｓｃｅｒｔａｉｎａｄｖａｎｔａｇｅｓｓｕｃｈａｓｈｉｇｈｓｐｅｃｉｆｉｃｓｔｒｅｎｇｔｈ ,ｈｉｇｈｓｐｅｃｉｆｉｃｍｏｄｕｌｕｓ ,ｌｏｗｃｏｅｆｆｉｃｉｅｎｔｏｆｔｈｅｒｍａｌｅｘｐａｎｓｉｏｎ (ＣＴＥ)ａｎｄｓｏｏｎ ,ｂｕｔａｌｓｏｃａｎｂｅｓｅｃｏｎｄａｒｉ…     

Influence of B2 ordered structure on deformation texture

1　ＩＮＴＲＯＤＵＣＴＩＯＮＢｅｃａｕｓｅｏｆｔｈｅｓｐｅｃｉａｌａｔｏｍｏｃｃｕｐａｔｉｏｎｉｎｃｒｙｓ ｔａｌｌｉｎｅｌａｔｔｉｃｅ,ｔｈｅｄｉｓｌｏｃａｔｉｏｎｓｔｒｕｃｔｕｒｅｏｆｉｎｔｅｒ ｍｅｔａｌｌｉｃｓｉｓｒｅｌａｔｅｄｔｏｔｈｅｆｏｒｍａｔｉｏｎｏｆａｎｔｉ ｐｈａｓｅｄｏ ｍａｉｎｂｏｕｎｄａｒｙ ,ｆｏｒｗｈｉｃｈｔｈｅｃｒｙｓｔａｌｌｏｇｒａｐｈｉｃｂｅｈａｖ ｉｏｒｓｏｆｔｈｅｐｌａｓｔｉｃｄｅｆｏｒｍａｔｉｏｎｉｓｄｉｆｆｅｒｅｎｔｆｒｏｍｔｈａｔｏｆｔｈｅｃｏｎｖｅｎｔｉｏ…     

Elastic modulus of SiC_w/6061Al alloy composites as-squeeze-cast

1　ＩＮＴＲＯＤＵＣＴＩＯＮＣｏｍｐｏｓｉｔｅｏｆｓｉｌｉｃｏｎｃａｒｂｉｄｅｗｈｉｓｋｅｒｒｅｉｎｆｏｒｃｅｄａｌｕｍｉｎｕｍ (ＳｉＣｗ/Ａｌ)ａｓａｎｅｗｔｙｐｅｏｆｓｔｒｕｃｔｕｒａｌｍａ ｔｅｒｉａｌｎｏｔｏｎｌｙｈａｓｓｏｍｅａｄｖａｎｔａｇｅｓｓｕｃｈａｓｈｉｇｈｓｐｅ ｃｉｆｉｃｓｔｒｅｎｇｔｈ ,ｈｉｇｈｓｐｅｃｉｆｉｃｍｏｄｕｌｕｓ ,ｌｏｗｔｈｅｒｍａｌｃｏ ｅｆｆｉｃｉｅｎｔｏｆｅｘｐａｎｓｉｏｎａｎｄｓｏｏｎ[1,2 ] ,ｂｕｔａｌｓｏｃａｎｂｅｓｅｃｏｎｄａｒｉｌｙｓｈａｐｅｄｂｙｔｈ…     

Thixoforming of 6066 aluminum alloy by multi-layer spray deposition

1　ＩＮＴＲＯＤＵＣＴＩＯＮ1.1　ＴｈｉｘｏｆｏｒｍｉｎｇＩｎｔｈｅｅａｒｌｙ 1970ｓ ,ａｓｐｅｃｉａｌｔｈｉｘｏｔｒｏｐｉｃｍｉ ｃｒｏｓｔｒｕｃｔｕｒｅｉｎｓｅｍｉｓｏｌｉｄｓｔａｔｅｗａｓｄｉｓｃｏｖｅｒｅｄｗｈｅｎＦｌｅｍｉｎｇｓａｎｄｈｉｓｃｏ ｗｏｒｋｅｒｓｓｔｕｄｉｅｄｔｈｅ“ｈｏｔｔｅａｒｓ”ｏｆｔｈｅｃａｓｔｉｎｇａｌｌｏｙｓ[1] .Ｔｈｅａｐｐａｒｅｎｔｖｉｓｃｏｓｉｔｙｏｆｔｈｅｓｅｍｉｓｏｌｉｄｍａｔｅｒｉａｌｓｄｅｃｌｉｎｅｓｓｈａｒｐｌｙｗｉｔｈｔｈｅｉｎｃｒｅａｓｅｏｆｔｈ…     

Crystallization behavior of Zr_(52) Cu_(18) Ni_(15) Al_(10) Ti_5 bulk glass with quenched-in crystals

1　ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｃｒｙｓｔａｌｌｉｚａｔｉｏｎｂｅｈａｖｉｏｒｉｎｍｕｌｔｉｃｏｍｐｏｎｅｎｔａｍｏｒｐｈｏｕｓａｌｌｏｙｓｉｓｃｏｍｐｌｉｃａｔｅｄ,ｄｅｐｅｎｄｉｎｇｇｒｅａｔｌｙｏｎａｌｌｏｙｃｏｍｐｏｓｉｔｉｏｎａｎｄｍｉｃｒｏｓｔｒｕｃｔｕｒｅ,ｈｅａｔｉｎｇｐｒｏｃｅｓｓａｎｄａｓｃａｓｔａｍｏｒｐｈｏｕｓｓｔａｔｅ,ａｎｄｓｏｏｎ.Ｓｏｍｅｔｉｍｅｓｍｅｔａｓｔａｂｌｅｐｈａｓｅｓａｐｐｅａｒｂｅｆｏｒｅｔｈｅｒｍａｌｌｙｓｔａｂｌｅｅｑｕｉｌｉｂｒｉｕｍｐｈａｓｅ.Ｔ…     

Numerical model of solidification process in binary Al-Fe alloy under centrifugal casting

1　ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｓｏｌｉｄｉｆｉｃａｔｉｏｎｐｒｏｃｅｓｓｏｆｂｉｎａｒｙＡｌ Ｆｅａｌｌｏｙｕｎｄｅｒｃｅｎｔｒｉｆｕｇａｌｃａｓｔｉｎｇｉｓｃｏｎｔｒｏｌｌｅｄｂｙｔｈｅｍａｓｓ,ｍｏｍｅｎｔｕｍ ,ｈｅａｔａｎｄｃｈｅｍｉｃａｌｓｐｅｃｉｅｓｔｒａｎｓｐｏｒｔａ ｔｉｏｎ .Ｔｈｅｒｅｆｏｒｅ,ｉｔｉｓａｎｉｍｐｏｒｔａｎｔｍｅａｎｓｔｏｋｎｏｗｔｈｅｍｉｃｒｏｓｔｒｕｃｔｕｒｅａｎｄｔｈｅｓｅｇｒｅｇａｔｉｏｎｏｆｂｉｎａｒｙＡｌ Ｆｅａｌｌｏｙｕｎｄｅｒｃｅｎｔｒｉｆｕｇａｌｃ…     

Molecular dynamics of structural properties of molten CaO-SiO2 with varying composition

1　ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｓｔｕｄｙｏｆｍｏｌｔｅｎｓｔｒｕｃｔｕｒｅｏｆＣａＯ ＳｉＯ2 ,ｗｈｉｃｈａｃｔａｓｔｈｅｂａｓｉｃｆａｃｔｏｒｉｎｆｌｕｅｎｃｉｎｇｔｈｅｐｈｙｓｉｃａｌａｎｄｃｈｅｍｉｃａｌｐｒｏｐｅｒｔｉｅｓｏｆｔｈｅｓｉｌｉｃａｔ     

Microstructure and Transformation on Platinum (111) Facets

ＭｉｃｒｏｓｔｒｕｃｔｕｒｅａｎｄＴｒａｎｓｆｏｒｍａｔｉｏｎｏｎＰｌａｔｉｎｕｍ（１１１）ＦａｃｅｔｓＷａｎｇＬｉａｎｓｈａｎＨｏｎｇＨａｎｌｉｅ（汪连山）（洪汉烈）（ＷｕｈａｎＵｎｉｖｅｒｓｉｔｙｏｆＴｅｃｈｎｏｌｏｇｙ，Ｗｕｈａｎ４３００７０，...     

乙酰丙酮铂(Ⅱ)、钯(Ⅱ)配合物的XPS和NMR特性研究

本文研究了乙酰丙酮铂（Ⅱ）、乙酰丙酮钯（Ⅱ）的光电子能谱和核磁共振谱的特性,提出了乙酰丙酮与Pt（Ⅱ）、Pd（Ⅱ）的配位方式,认为除了形成M←L的σ配位键外,还形成了M→L的dxz（dyz）→π^13反馈π键,从而解释了乙酰丙酮与Pt（Ⅱ）、Pd（Ⅱ）形成稳定配合物的原因.     

MICROSTRUCTURE AND COMPRESSIVE PROPERTIES OFTi_(50)Al_(48)Mn_2 AND Ti_(50)Al_(48)Cr_2

The microstructure and compressive properties of Ti_(500Al_(48)Mn_2and Ti_(50)Al_(48)Cr_2 alloys are studied in this paper Existence of αx y transforntation in TiAl alloys is confirnted by metallographic examincttion,the transformation temperatuses of Ti_(50)Al_(48)Mn_2 and Ti_(500Al_(48)Cr_2,are 1375and 1373C respeclively,After treating withic x y phase field,themicrostructure of alloys consists of lamellar zones(L)and bulk y_p.,The vohme ratio of L/y_p inctrases with increasing solution treatnient temperature.The third alloying ele-ments of Mn and Cr distribute perfentially over αphase at solution treatment tempera-tures and result in that α_2 and γ lamellae become thicker.The yield strength of Ti_(50)Al_(48)Mn_2 and Ti_(500Al_(48)Cr_2 alloys decreases and the compressibllity increases with in-creasing γ_p volume fraction.     

（LPCCa）2（MgNi）17合金的吸放氢性能

研究了用部分Ca取代LPC（LPC为无钕镧镨铈混合稀土金属），同时用部分Ni取代Mg的（LPCCa）2（MgNi）17合金的吸放氢性能。比较了不同温度下，不同成分配比对合金贮氢性能的影响。其中，（LPC）1.9Ca0.1Mg15Ni2合金具有相对较低的放氢温度和较大的放氢节，住275℃的放氢量达3．43％（质量分数）。分析了（LPC）1.9Ca0.1Mg15Ni2的微观结构，同时对合金放氢温度降低的原冈进行了讨论。     

Non-isothermal decomposition kinetics and lifetime ofTb2(O-MBA)6(PHEN)2

The thermal decomposition of Tb2(O-MBA)6(PHEN)2 (O-MBA: o-methylbenzoate; PHEN: 1,10-phenanthroline)and its kinetics were studied under the non-isothermal condition by thermogravimetry-derivafive thermogravimetry (TG-DTG) techniques. Kinetic parameters were obtained from analysis of TG-DTG curves by the Achar method and the Madhusudanan-Krishnan-Ninan (MKN) method. The most probable mechanism function was suggested by comparing the kinetic parameters. The kinetic equation for the first stage can be expressed as dα/dt = Aexp(-E/RT) @ 3(1 - α)2/3. The lifetime equation at mass loss of 10% was deduced as lnτ= -28.7429 + 19797.795/T by isothermal thermogravimetric analysis.     

Vapor pressure of SeO2 (s) and optical density of SeO2 (g)

The optical density of the vapor generated by SeO₂ (s) between about 416 and 505 K has been measured between 400 and 200 nm for optical path lengths of 10.14 and 10.15 cm and temperatures of 533, 733, 1133, and 1420 K. A pressure of oxygen of about 0.7 to 0.9 atm was present in the cells and that of Se₂ was below the minimum detectable of about 0.001 atm. For one cell, complete vaporization occurred at 481.5 K and a vapor pressure of 5.02 × 10⁻³ atm was calculated from the weight of SeO₂ (s), the volume profile of the optical cell, and the temperature distribution along the cell. Assuming Beer’s law is obeyed for a number of vibronic peaks, the vapor pressure is obtained as log₁₀ P (atm)=−5705/T+9.5443 in close agreement with two studies with fused silica Bourdon gauges. Beer’s law constants relating the pressure to the optical density at various wavelengths are obtained for the optical path temperatures listed above. Thermodynamic data previously published for solid and liquid SeO₂ need be changed only slightly to be consistent with the present vapor pressure. We obtain a standard enthalpy of sublimation at 298 K of 112.70 kJ/mol and standard entropies at 298 K of 258.72 and 66.693 J · mol⁻¹ · K⁻¹ for, respectively, gaseous and solid SeO₂.     

Non-isothermal decomposition kinetics and lifetime of Tb2(0-MBA)6(PHEN)2

The thermal decomposition of Tb2(O-MBA)6(PHEN)2 (O-MBA: o-methylbenzoate; PHEN: 1,10-phenanthroline) and its kinetics were studied under the non-isothermal condition by thermogravimetry-derivative thermogravimetry (TG-DTG) techniques. Kinetic parameters were obtained from analysis of TG-DTG curves by the Achar method and the Madhusudanan-Krishnan-Ninan (MKN) method. The most probable mechanism function was suggested by comparing the kinetic parameters. The kinetic equation for the first stage can be expressed as dcddt = Aexp(-E/RT) 3(1 - α)2/3 The lifetime equation at mass loss of 10% was deduced as lnr= -28.7429 + 19797.795/Tby isothermal thermogravimetric analysis.     

Copper(I) coordination ability of the outer S-position isomer of EDT-DMT-TTF (D1): crystal structure of (D1)2Cu2Br4,2CH2Cl2; structural correlation with the (D1)2Cu2Br6 copper(II) salt

The (D1)₂Cu₂Br₄,2CH₂Cl₂ (1) and (D1)₂Cu₂Br₆ (2) radical cation salts, where D1 is the outer S-position isomer of ethylenedithiodimethylthiotetrathiafulvalene (EDT-DMT-TTF), have been synthesized and their X-ray crystal structures have been solved. The molecular structure of 1 is built up from (D1–Cu₂Br₄–D1) metal complexes. Each copper(I) atom is coordinated to a sulfur atom of the D1 disulfide bridge through a σ-type dative bond. Consequently, Cu₂Br₄ part is located between two organic molecules which are approximately plane and parallel to each other. In compound 2, (Cu₂Br₆)²⁻ anions, in which copper atoms are at the +2 oxidation state, also lie between two oxidized donors. In both resulting structures, the D1–Cu₂Br_x–D1 parts (x=4 for 1, x=6 for 2) are stacking in order to form columns containing dimerized (D1⁺)₂ units.     

Spectroscopic studies of the radical cation salt (BEDT-TTF)2Pt(NO2)4

We report on spectroscopic studies of the charge transfer salt formed by the organic donor bis(ethelenedithio)tetrathiafulvalene (BEDT-TTF) and [Pt(NO₂)₄]²⁻ anions. In this salt BEDT-TTF molecules are arranged in well-isolated (BEDT-TTF⁺)₂ dimers. Polarized reflectance spectra of single crystals were measured in the IR region (650–6500 cm⁻¹). Moreover, absorption spectra (400–15,000 cm⁻¹) and FT-NIR Raman spectra of powdered crystals dispersed in KBr pellets were recorded. Vibrational and electronic features are discussed. We suggest that the frequency of the CC stretching ν₃(a_g) mode depends non-linearly on the degree of ionization of BEDT-TTF.     

Fe55Ni2Cr12Mo10Y2B6C13块体非晶合金的热膨胀行为

本文采用铜模吸铸法制备直径为4mm的块体非晶合金Fe55 Ni2 Cr12 M010 Yo12 B6 C13,对非晶合金在298K-1073K温度区间的热膨胀行为进行了分析.非晶合金的膨胀系数在室温至接近玻璃转化温度区间没有发生明显的变化;当温度超过Tg后,由玻璃态进人过冷液相区,粘度急剧增加,膨胀系数增高;在T>Tg...     

Crystal structure,ESR and conductivity studies of bis(ethylenedithio)tetrathiafulvalene (ET) organic conductor (H8-ET)2[Hg(SCN)2Br] and its deuterated analogue (D8-ET)2[Hg(SCN)2Br]

Protonated (I) and deuterated (II) crystals of (ET)₂[Hg(SCN)₂Br] (ET = bis(ethylenedithio)tetrathiafulvalene) are isostructural with B2/b space group and Z = 4. Crystal structure consists of (ET)₂⁺ dimers forming a κ-type motif and arranged in layers parallel to the bc-plane which are separated by anionic sheets of polymeric anions. A two-positional disorder exists in ethylene groups of deuterated ET molecules, while such disorder appears only in one of the ethylene groups in the hydrogenated salt. The crystals exhibit semimetallic behaviour at high temperatures with a transition to non-metallic state at 100 K for salt I and 60 K for salt II as is shown from d.c. conductivity measurements. Electron spin resonance (ESR) g factor and linewidth and their temperature behaviour are extensively discussed on the basis of existing theories and experimental data for low-dimensional organic conductors. The linewidth is determined by spin-phonon scattering driven relaxation processes which are mediated by Peierls fluctuations in the conducting phase and by spin-lattice relaxation processes below the critical temperature. The first-order phase transition in hydrogenated salt at 100 K is associated with a localization of electrons on ET dimers, whereas the transition of semiconductor-semiconductor type with possible magnetic ordering is suggested for deuterated salt. A considerable isotope effect in (ET)₂[Hg(SCN)₂Br] is considered to be related to a weak hydrogen bond between the terminal ethylene group of ET^dot;+ and the bromine atom of the anion in hydrogenated salt. A discussion of the nature of the phase transitions is given.