Accuracy

sic4(-) (fogmet) r   1891 SiC4(-) (FOGMET) (Geo)

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    #  Species Formula
  1881 DimethylsilylC2H7Si
  1882 DimethylsilaneC2H8Si
  1883 EthylsilaneC2H8Si
  1884 TrimethylsilylC3H9Si
  1885 TrimethylsilaneC3H10Si
  1886 DiethylsilaneC4H12Si
  1887 Tetramethylsilane (Geo)C4H12Si
  1888 TetramethylsilaneC4H12Si
  1889 1,1-DimethylsilacyclobutaneC5H12Si
  1890 TriethylsilaneC6H16Si
  1891 SiC4(-) (FOGMET) (Geo) C8H13Si
  1892 SiC4(-) (FOGMET)C8H13Si
  1893 TetraethylsilaneC8H20Si
  1894 Silicon nitride (Geo)NSi
  1895 SiC4 (BAWNUI) (Geo)C4H9NSi
  1896 SiC4 (BAWNUI)C4H9NSi
  1897 SiC3N(+) (CASKIQ) (Geo)C8H14NSi
  1898 SiC3N(+) (CASKIQ)C8H14NSi
  1899 Trimethylsilicon hydroxideC3H10OSi
  1900 Silicon dioxideO2Si
  1901 SiH3O (BAHTAF) (Geo)C2H6O2Si


REF: The Cambridge Structural Database: a quarter of a million crystal structures and rising. F. H. Allen, Acta Cryst. B58, 380-388, (2002)
  
 CHARGE=-1 PM7
SiC4(-) (FOGMET)
 <Si-C> <Si-C><C-Si-C> GR=CCDC
 Si     0.00000000 +0    0.0000000 +0    0.0000000 +0     0     0     0
  C     1.95440900 +1    0.0000000 +0    0.0000000 +0     1     0     0
  C     1.82123300 +1  108.3159410 +1    0.0000000 +0     1     2     0
  C     1.41824328 +1  126.4742995 +1  129.2728987 +1     3     1     2
  H     1.06532292 +1  127.6117279 +1   -0.4473616 +1     4     3     1
  C     1.40879677 +1  107.7742934 +1 -179.8527696 +1     4     3     5
  H     1.06111869 +1  125.9622420 +1  179.9400410 +1     6     4     3
  C     1.41351997 +1  108.2272495 +1 -179.9790550 +1     6     4     7
  H     1.06130908 +1  125.7932971 +1  179.9522725 +1     8     6     4
  C     1.40834910 +1  108.2593863 +1 -179.9893039 +1     8     6     9
  H     1.06549329 +1  124.5657817 +1  179.9298535 +1    10     8     6
  C     1.88466935 +1  107.8518108 +1 -121.1784023 +1     1     2     3
  C     1.88108039 +1  108.4900626 +1 -117.8463117 +1     1     2    12
  H     1.09205163 +1  111.4067025 +1  178.0958209 +1     2     1     3
  H     1.09715946 +1  108.7144186 +1 -121.1093120 +1     2     1    14
  H     1.09693895 +1  108.7736337 +1 -117.7774435 +1     2     1    15
  H     1.09724108 +1  112.1003455 +1  -57.0731344 +1    12     1     2
  H     1.10181106 +1  109.9547331 +1 -121.1983700 +1    12     1    17
  H     1.10258723 +1  109.7040301 +1 -117.9091041 +1    12     1    18
  H     1.09787816 +1  111.9908940 +1   56.2031535 +1    13     1     2
  H     1.10221827 +1  110.0947173 +1  121.1334473 +1    13     1    20
  H     1.10310145 +1  109.7908985 +1  118.1033549 +1    13     1    21