Chromium--platinum (1/3) | 12526-98-6

• 分子结构分类: 无机化合物 - 均相金属化合物 - 均相过渡金属化合物
• 英文名称: Chromium--platinum (1/3)
• 英文别名: chromium;platinum
• CAS: 12526-98-6
• 化学式: CrPt₃
• 分子量: 637.236
• InChiKey: FOCQHHODCSRSEK-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.01
• 重原子数：
  4
• 可旋转键数：
  0
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  0
• 氢给体数：
  0
• 氢受体数：
  0

反应信息

• 作为产物：
  描述：

  铬 、 铂 以 neat (no solvent) 为溶剂， 生成 Chromium--platinum (1/3)
  参考文献：
  名称：

  高温直接合成量热法测定某些晚期4d和5d过渡金属二元金属间化合物的标准生成焓

  摘要：

  某些晚期 4d 和 5d 过渡金属的金属间化合物的标准形成焓已通过高温直接合成量热法在 1373 +/- 2 K 下进行测量。 报告了以下以 kJ/mol 原子为单位的结果： NbMn(2) (-10.4 +/- 2.7); 铌 (-0.7 +/- 2.8); RhMo (-4.8 +/- 1.8)：PdMn (-45.2 +/- 2.2)；钯（2）钼（-9.2 +/- 1.9）；TaMn(2) (-14.5 +/- 2.5)；IrMn(3) (-13.2 +/- 2.8)：Pt(3)Cr (-8.8 +/- 3.1)；铂锰 (-53.6 +/- 1.5); 铂钼 (-17.9 +/- 2.2); Pt(3)Ta (-21.1 +/- 2.4)；和 YMn(2) (-2.8 +/- 2.8)。将这些值与 Miedema 和同事的预测值以及可用的从头计算的新结果进行比较。我们将展示生成焓如何

  DOI：

  10.1016/j.jallcom.2009.11.092

文献信息

• The standard enthalpies of formation of binary intermetallic compounds of some late 4d and 5d transition metals by high temperature direct synthesis calorimetry
  作者：S.V. Meschel、P. Nash、Xing-Qiu Chen

  DOI：10.1016/j.jallcom.2009.11.092

  日期：2010.3

  The standard enthalpies of formation of intermetallic compounds of some late 4d and 5d transition metals have been measured by high temperature, direct synthesis calorimetry at 1373 +/- 2 K. The following results in kJ/mol of atoms are reported: NbMn(2) (-10.4 +/- 2.7); NbRu (-0.7 +/- 2.8); RhMo (-4.8 +/- 1.8): PdMn (-45.2 +/- 2.2); Pd(2)Mo (-9.2 +/- 1.9); TaMn(2) (-14.5 +/- 2.5); IrMn(3) (-13.2 +/-

  某些晚期 4d 和 5d 过渡金属的金属间化合物的标准形成焓已通过高温直接合成量热法在 1373 +/- 2 K 下进行测量。 报告了以下以 kJ/mol 原子为单位的结果： NbMn(2) (-10.4 +/- 2.7); 铌 (-0.7 +/- 2.8); RhMo (-4.8 +/- 1.8)：PdMn (-45.2 +/- 2.2)；钯（2）钼（-9.2 +/- 1.9）；TaMn(2) (-14.5 +/- 2.5)；IrMn(3) (-13.2 +/- 2.8)：Pt(3)Cr (-8.8 +/- 3.1)；铂锰 (-53.6 +/- 1.5); 铂钼 (-17.9 +/- 2.2); Pt(3)Ta (-21.1 +/- 2.4)；和 YMn(2) (-2.8 +/- 2.8)。将这些值与 Miedema 和同事的预测值以及可用的从头计算的新结果进行比较。我们将展示生成焓如何
• Magnetic order in crystallographically ordered Pt4-y(MnxCr1-x)y alloys
  作者：D.E.G. Williams、A. Jezierski

  DOI：10.1016/0304-8853(86)90008-9

  日期：1986.5
• Magnetic anisotropy and chemical long-range order in epitaxial ferrimagnetic CrPt3 films
  作者：M Maret、M Albrecht、J Köhler、R Poinsot、C Ulhaq-Bouillet、J.M Tonnerre、J.F Berar、E Bucher

  DOI：10.1016/s0304-8853(00)00367-x

  日期：2000.8

  Thin films of CrPt3 were prepared by molecular beam epitaxy on both Al2O3(0 0 0 1) and MgO(0 0 1) substrates, either directly by co-deposition of Cr and Pt at high temperatures or after in situ annealing of superlattices [Cr(2 Angstrom)/Pt(7 Angstrom)]. In situ RHEED observations and X-ray diffraction measurements have allowed us to check the single-crystal quality of CrPt3 films and to determine the degree of L1(2)-type long-range order (LRO). In films co-deposited between 850 degrees C and 950 degrees C a nearly perfect LRO has been observed. As in bulk alloys, such ordering yields a ferrimagnetic order, while the disordered films are non-magnetic. In contrast with the ferromagnetic L1(2)-type ordered CoPt3(1 1 1)films, the ferrimagnetic CrPt3(1 1 1) films exhibit perpendicular magnetic anisotropy with quality factors, K-u/K-d, as large as 5 and large coercivities around 450 kA/m. Such anisotropy could be related to the arrangement of Cr atoms, which owing to their large magnetic moment, oppositely directed to the small Pt moment, drive the magnetization. Since the six Cr nearest neighbours around a Cr atom are along the < 001 > directions, making an angle of 54.74 degrees with the [111] growth direction, the overlap of their electron distribution favors an easy axis of magnetization normal to the film plane. This idea is supported by the absence of magnetic anisotropy in ferrimagnetic CrPt3(0 0 1) films. (C) 2000 Elsevier Science B.V. All rights reserved.
• Particle size and alloying effects of Pt-based alloy catalysts for fuel cell applications
  作者：Myoung-ki Min、Jihoon Cho、Kyuwoong Cho、Hasuck Kim

  DOI：10.1016/s0013-4686(00)00553-3

  日期：2000.8

  Carbon-supported Pt-based binary alloy electrocalalysts (Pt-Co, Pt-Cr and Pt-Ni) were prepared by incipient wetness method to investigate the origin of the enhanced activity of the oxygen reduction reaction in fuel cells. The composition of these catalysts was adjusted to 3:1 (Pt:M, atomic%, M = Co, Cr and Ni). Prepared catalysts were characterized by various physical and electrochemical techniques, that is, energy dispersive X-ray spectrometry (EDX), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray absorption spectroscopy (XAS) and cyclic voltammetry (CV). XRD analysis showed that all prepared catalysts exhibited face-centered cubic structures and had smaller lattice parameters than Pt-alone catalyst. Pt-alone and Pt-based alloy catalysts showed increasing specific activities with decreasing surface area. This indicates that oxygen reduction on platinum surface is a structure-sensitive reaction. According to CV and X-ray absorption near-edge structure (XANES) results, the structure-sensitivity of Pt and Pt-based alloy catalysts for oxygen reduction seems associated with the adsorption strength of oxygen intermediates on the Pt surface. In addition, the Pt-based alloy catalysts showed significantly higher specific activities than Pt-alone catalysts with the same surface area. This phenomenon comes from the seduced Pt-Pt neighboring distance as the catalysts were alloyed. The reduced Pt-Pt neighboring distance is favorable for the adsorption of oxygen. (C) 2000 Elsevier Science Ltd. All rights reserved.
• Observation of ferri-nonmagnetic boundary in CrPt3 line-and-space patterned media using a dark-field transmission electron microscope
  作者：Daiki Oshima、Edi Suharyadi、Takeshi Kato、Satoshi Iwata

  DOI：10.1016/j.jmmm.2011.12.019

  日期：2012.4

  Ion beam patterned CrPt3 films were prepared by Kr+ ion irradiation at a dose of 2 x 10(14) ions/cm(2) onto L1(2)-ordered CrPt3 whose surface was partially masked by electron beam patterned resists. Cross-sectional observation using transmission electron microscopy was carried out to study the patterning boundary of the CrPt3 film. Dark-field imaging showed a distinct contrast between non-irradiated (L1(2) phase) and irradiated (A1 phase) regions. The transition width between the two phases was estimated to be about 5 nm, which agreed well with the value simulated by a transport ion in matter (TRIM) code simulation. (C) 2011 Elsevier B.V. All rights reserved.