Difference between revisions of "Octadecaborane(22)"

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| Section2 = {{Chembox Properties
 
| Section2 = {{Chembox Properties
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|  Reference = <ref name="Struct">{{citation | first1 = Paul G. | last1 = Simpson | first2 = William N. | last2 = Lipscomb | title = Molecular structure of B<sub>18</sub>H<sub>22</sub> | journal = Proc. Natl. Acad. Sci. | volume = 48 | issue = 9 | pages = 1490–91 | year = 1962}}.</ref>
 
|  Formula = B<sub>18</sub>H<sub>22</sub>
 
|  Formula = B<sub>18</sub>H<sub>22</sub>
 
|  MolarMass = 216.4 g mol<sup>−1</sup>
 
|  MolarMass = 216.4 g mol<sup>−1</sup>
 
|  Density = 1.012 g cm<sup>−3</sup>
 
|  Density = 1.012 g cm<sup>−3</sup>
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  }}
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| Section3 = {{Chembox Structure
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|  Reference = <ref name="Struct"/>
 +
|  SpaceGroup = P''ccn''
 +
|  LattConst_a = 1084.4(3) pm
 +
|  LattConst_b = 1210.7(3) pm
 +
|  LattConst_c = 1080.3(4)
 
   }}
 
   }}
 
}}
 
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'''Octadecaborane(22)''', B<sub>18</sub>H<sub>22</sub>, is a polynuclear [[borane]] used in the semiconductor industry.
 
'''Octadecaborane(22)''', B<sub>18</sub>H<sub>22</sub>, is a polynuclear [[borane]] used in the semiconductor industry.
  
It is structurally related to [[decaborane(14)]]: the structure can be viewed as two fused ''arachno''-decaborane units. The usual form of octadecaborane(22) is the ''anti''-fused structure, also referred to as ''n''-B<sub>18</sub>H<sub>22</sub>.<ref>{{citation | first1 = Paul G. | last1 = Simpson | first2 = William N. | last2 = Lipscomb | title = Molecular structure of B<sub>18</sub>H<sub>22</sub> | journal = Proc. Natl. Acad. Sci. | volume = 48 | issue = 9 | pages = 1490–91 | year = 1962}}.</ref>
+
It is structurally related to [[decaborane(14)]]: the structure can be viewed as two fused ''arachno''-decaborane units. The usual form of octadecaborane(22) is the ''anti''-fused structure, also referred to as ''n''-B<sub>18</sub>H<sub>22</sub>.<ref name="Struct"/>
  
 
It is prepared by the oxidation of the B<sub>9</sub>H<sub>12</sub><sup>−</sup> cluster, for example with [[iodine]] in [[toluene]] solution.<ref>{{citation | title = The Preparation of a New Boron Hydride B<sub>18</sub>H<sub>22</sub> | first1 = Anthony R. | last1 = Pitochelli | first2 = M. Frederick | last2 = Hawthorne | journal = J. Am. Chem. Soc. | year = 1962 | volume = 84 | issue = 16 | page = 3218 | doi = 10.1021/ja00875a058}}.</ref><ref>{{citation | title = Preparation of ''n''-octadecaborane(22), ''n''-B<sub>18</sub>H<sub>22</sub>, by oxidative fusion of dodecahydrononaborate(1−) clusters | first1 = Donald F. | last1 = Gaines | first2 = Caterina K. | last2 = Nelson | first3 = Gail A. | last3 = Steehler | journal = J. Am. Chem. Soc. | year = 1984 | volume = 106 | issue = 23 | pages = 7266–67 | doi = 10.1021/ja00335a079}}.</ref><ref>{{citation | title = Improved Synthetic Route to ''n''-B<sub>18</sub>H<sub>22</sub> | first1 = Yuqi | last1 = Li | first2 = Larry G. | last2 = Sneddon | journal = Inorg. Chem. | year = 2006 | volume = 45 | issue =2 | pages = 470–71 | doi = 10.1021/ic051712z}}.</ref>
 
It is prepared by the oxidation of the B<sub>9</sub>H<sub>12</sub><sup>−</sup> cluster, for example with [[iodine]] in [[toluene]] solution.<ref>{{citation | title = The Preparation of a New Boron Hydride B<sub>18</sub>H<sub>22</sub> | first1 = Anthony R. | last1 = Pitochelli | first2 = M. Frederick | last2 = Hawthorne | journal = J. Am. Chem. Soc. | year = 1962 | volume = 84 | issue = 16 | page = 3218 | doi = 10.1021/ja00875a058}}.</ref><ref>{{citation | title = Preparation of ''n''-octadecaborane(22), ''n''-B<sub>18</sub>H<sub>22</sub>, by oxidative fusion of dodecahydrononaborate(1−) clusters | first1 = Donald F. | last1 = Gaines | first2 = Caterina K. | last2 = Nelson | first3 = Gail A. | last3 = Steehler | journal = J. Am. Chem. Soc. | year = 1984 | volume = 106 | issue = 23 | pages = 7266–67 | doi = 10.1021/ja00335a079}}.</ref><ref>{{citation | title = Improved Synthetic Route to ''n''-B<sub>18</sub>H<sub>22</sub> | first1 = Yuqi | last1 = Li | first2 = Larry G. | last2 = Sneddon | journal = Inorg. Chem. | year = 2006 | volume = 45 | issue =2 | pages = 470–71 | doi = 10.1021/ic051712z}}.</ref>

Revision as of 18:26, 19 December 2010

Octadecaborane(22)
Identifiers
Standard InChI InChI=1S/B18H22/c19-7-1-3(7)4( 1)8(1,11(1,7,19)20-8)16(4)13(3 ,4)15(3,7)14(16)5-2-6(5,14)10( 2,18(6,13,14,16,25-16)26-16)12 (2,22-10)9(2,5,21-12)17(5,13,1 4,15,23-15)24-15/h1-14H
Standard InChIKey CJBYJBAYBMYRDQ-UHFFFAOYSA-N
Properties[1]
Chemical formula B18H22
Molar mass 216.4 g mol−1
Density 1.012 g cm−3
Structure[1]
Space group Pccn
Lattice constant a = 1084.4(3) pm, b = 1210.7(3) pm, c = 1080.3(4)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

Octadecaborane(22), B18H22, is a polynuclear borane used in the semiconductor industry.

It is structurally related to decaborane(14): the structure can be viewed as two fused arachno-decaborane units. The usual form of octadecaborane(22) is the anti-fused structure, also referred to as n-B18H22.[1]

It is prepared by the oxidation of the B9H12 cluster, for example with iodine in toluene solution.[2][3][4]

References

  1. 1.0 1.1 1.2 Simpson, Paul G.; Lipscomb, William N. Molecular structure of B18H22. Proc. Natl. Acad. Sci. 1962, 48 (9), 1490–91.
  2. Pitochelli, Anthony R.; Hawthorne, M. Frederick The Preparation of a New Boron Hydride B18H22. J. Am. Chem. Soc. 1962, 84 (16), 3218. DOI: 10.1021/ja00875a058.
  3. Gaines, Donald F.; Nelson, Caterina K.; Steehler, Gail A. Preparation of n-octadecaborane(22), n-B18H22, by oxidative fusion of dodecahydrononaborate(1−) clusters. J. Am. Chem. Soc. 1984, 106 (23), 7266–67. DOI: 10.1021/ja00335a079.
  4. Li, Yuqi; Sneddon, Larry G. Improved Synthetic Route to n-B18H22. Inorg. Chem. 2006, 45 (2), 470–71. DOI: 10.1021/ic051712z.
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