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铪四水合物 | 12027-05-3

中文名称
铪四水合物
中文别名
——
英文名称
hafnium hydroxide
英文别名
hafnium tetrahydroxide;hydrous hafnia;Hafnium(4+);tetrahydroxide
铪四水合物化学式
CAS
12027-05-3
化学式
H4HfO4
mdl
——
分子量
246.519
InChiKey
OAKMTVGBLXXWPZ-UHFFFAOYSA-J
BEILSTEIN
——
EINECS
——
  • 物化性质
  • 计算性质
  • ADMET
  • 安全信息
  • SDS
  • 制备方法与用途
  • 上下游信息
  • 反应信息
  • 文献信息
  • 表征谱图
  • 同类化合物
  • 相关功能分类
  • 相关结构分类

物化性质

  • 熔点:
    440-475 °C (decomp)

计算性质

  • 辛醇/水分配系数(LogP):
    -0.71
  • 重原子数:
    5
  • 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:
    4
  • 氢给体数:
    4
  • 氢受体数:
    4

SDS

SDS:ed0215081852a79fc9df61e359bfe766
查看

反应信息

  • 作为反应物:
    描述:
    铪四水合物硝酸 作用下, 以 硝酸 为溶剂, 生成 hafnium(IV) nitrate
    参考文献:
    名称:
    Afanas'ev, Yu. A.; Azhina, L. T.; Ryabinin, A. I., Inorganic Materials, 1990, vol. 26, p. 278 - 282
    摘要:
    DOI:
  • 作为产物:
    描述:
    hafnium ammonium hexafluoride 生成 铪四水合物
    参考文献:
    名称:
    Boer, J. H. de, Zeitschrift fur anorganische Chemie, 1927, vol. 165, p. 9 - 9
    摘要:
    DOI:
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文献信息

  • Infrared Spectra and Structures for Group 4 Dihydroxide and Tetrahydroxide Molecules
    作者:Xuefeng Wang、Lester Andrews
    DOI:10.1021/jp054482i
    日期:2005.12.1
    atoms react with H(2)O(2) molecules and with H(2) + O(2) mixtures to form M(OH)(2) and M(OH)(4) molecules, which are trapped in solid argon and identified from isotopic shifts in the infrared spectra. Electronic structure calculations at the MP2 level converge to almost linear M(OH)(2) and tetrahedral M(OH)(4) molecules and predict vibrational frequencies for mixed isotopic molecules of lower symmetry
    和锆原子与H(2)O(2)分子和H(2)+ O(2)混合物反应形成M(OH)(2)和M(OH)(4)分子,它们被困在固体氩气,并根据红外光谱中的同位素位移确定。在MP2级别的电子结构计算会收敛到几乎线性的M(OH)(2)和四面体M(OH)(4)分子,并预测与实验测量结果非常吻合的低对称混合同位素分子的振动频率,从而证实了这一点。鉴定di和氢氧化锆及四氢氧化物分子。钛原子反应生成相同的产物分子,但是Ti(OH)(4)具有带有弯曲的Ti-OH键的S(4)结构,Ti(OH)(2)似乎接近线性,并且四价态更稳定HM(O)OH异构体对于Ti更为突出。
  • Infrared Spectrum and Structure of the Hf(OH)<sub>4</sub> Molecule
    作者:Xuefeng Wang、Lester Andrews
    DOI:10.1021/ic050614a
    日期:2005.10.1
    Laser-ablated Hf atoms react with H2O2 and with H2 + O2 mixtures in solid argon to form the Hf(OH)2 and Hf(OH)4 molecules, which are identified from the effect of isotopic substitution on the matrix infrared spectra. Electronic structure calculations at the MP2 level varying all bond lengths and angles converge to nearly linear and tetrahedral molecules, respectively, and predict frequencies for these
    激光烧蚀的Hf原子与H2O2和固体氩气中的H2 + O2混合物反应形成Hf(OH)2和Hf(OH)4分子,这是根据同位素取代对基质红外光谱的影响而确定的。在MP2级别上改变所有键长和角度的电子结构计算分别收敛到近乎线性和四面体的分子,并预测这些新产物分子和较低对称性的混合同位素取代的分子的频率与观察值极好一致,这证实了这些氢氧化ha分子的鉴定。这项工作为金属四氢氧化物分子提供了第一个证据,并表明与过量氩气中的H2O2发生金属原子反应可用于形成在固态下不稳定的纯金属四氢氧化物分子。
  • Inflatable axially contractable actuator
    申请人:Immega, Guy Broer
    公开号:EP0219327A1
    公开(公告)日:1987-04-22
    An axially contractable actuator (11) has an inflatable bladder (14) which unfolds on filling with pressurized fluid to contract axially as the volume of contained pressurized fluid is increased. The wall of the bladder is formed by a series of adjoining polyhedral protrusions (15) extending outwardly from the actuator axis, each protrusion having four or more sides and adjoining protrusions being joined at their bases to form folds or seams along substantially straight lines. Each protrusion additionally is foldable along another flexible fold or seam (55) of the protrusion wall in a theoretical plane dividing the respective protrusion into two parts, the protrusions unfolding from an axially extended condition of the actuator, in which they enclose a reduced volume, to an axially contracted condition in which they enclose a larger volume. Optionally, axially aligned end connectors (30) are provided at the bladder ends, and these are joined by linked cables (20) embracing the protrusions along fold lines (55) at the protrusion bases (44).
    一种轴向可收缩的执行器(11)具有充气膀胱(14),当充满加压流体时展开,随着包含加压流体的体积增加而轴向收缩。膀胱的壁由一系列相邻的多面凸起(15)形成,这些凸起从执行器轴向向外延伸,每个凸起具有四个或更多的面,并且相邻的凸起在它们的底部相接以形成沿着基本上直线的褶皱或缝合线。此外,每个凸起还可沿着凸起壁的另一个柔性折叠或缝合线(55)折叠,该折叠线理论平面将相应的凸起分为两部分,凸起从执行器的轴向伸展状态展开,其中它们包围了减少的体积,到轴向收缩状态,其中它们包围了更大的体积。可选地,在膀胱的末端提供轴向对齐的端连接器(30),并且这些连接器由沿着凸起基部(44)的折叠线(55)连接的链接电缆(20)连接。
  • Materials processing unit
    申请人:——
    公开号:EP0220936A3
    公开(公告)日:1988-11-30
    A materials processing unit incorporating three stage processing. The material to be processed is passed through a breaker unit (19) which breaks the material down to a consistent size for processing by a pulveriser unit (20) which further breaks down the material before it is transferred to a container (13) for compacting by ram (27) and blade (28). The material may be transferred to the container (13) by auger screws (25, 26) or a vacuum system comprising a fan (34) for reducing the pressure within the container (13) and causing the material to be sucked through duct (40) into the container (13). The unit may be mounted on a wheeled vehicle (12) and used to process a variety of materials from garbage to fruit.
    一种包含三级处理的材料加工装置。要处理的材料通过破碎机组(19)传送,将材料破碎成一致的大小,以便由粉碎机组(20)进一步破碎材料,然后将其转移到容器(13)中,通过活塞(27)和刀片(28)压缩。材料可以通过螺旋输送器(25、26)或真空系统转移到容器(13),真空系统包括风扇(34),用于减少容器(13)内的压力并使物料通过管道(40)吸入容器(13)。该装置可以安装在有轮车辆(12)上,并用于处理从垃圾到水果等各种材料。
  • The raman spectra and X-ray powder diffraction data of stabilized hafnia phases
    作者:M.A. Krebs、R.L. Snyder、R.A. Condrate
    DOI:10.1016/0025-5408(83)90151-4
    日期:1983.9
    phase apparently possessing tetragonal distortion with increasing dopant concentration. In contrast to the results for pure zirconia, there was no evidence in the Raman spectra or powder X-ray diffraction patterns to indicate the formation of a small particle size-stabilized tetragonal hafnia phase when X-ray amorphous hafnium hydroxide was heated at 425–600°C.
    摘要 测量了 Y2O3 掺杂铪的各种成分的拉曼光谱和 X 射线粉末衍射数据,并根据稳定的二氧化铪相的生长进行解释,该相随着掺杂浓度的增加而明显具有四方畸变。与纯氧化锆的结果相反,在拉曼光谱或粉末 X 射线衍射图中没有证据表明当 X 射线无定形氢氧化铪在 425 ℃加热时形成小粒径稳定的四方铪相。 600°C。
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