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#$Date: 2022-09-28 18:08:17 +0300 (Wed, 28 Sep 2022) $
#$Revision: 278247 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/00/14/2001423.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2001423
loop_
_publ_author_name
'Ziller, J. W.'
'Schaber, P. M.'
'Dinan, F. J.'
_publ_section_title
;
 Structure of 5,5'-dimethylsilanediyldi(phthalic anhydride): a model
 system for aromatic polyimides
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1430
_journal_page_last               1432
_journal_paper_doi               10.1107/S010827019300472X
_journal_volume                  49
_journal_year                    1993
_chemical_formula_sum            'C18 H12 O6 Si'
_chemical_formula_weight         352.4
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_cell_angle_alpha                93.285(14)
_cell_angle_beta                 106.558(13)
_cell_angle_gamma                101.730(13)
_cell_formula_units_Z            2
_cell_length_a                   9.0405(16)
_cell_length_b                   9.1893(15)
_cell_length_c                   10.6043(19)
_cell_volume                     820.5(3)
_diffrn_radiation_type           Mo
_diffrn_radiation_wavelength     0.710730
_exptl_absorpt_coefficient_mu    0.167
_exptl_crystal_density_diffrn    1.43
_exptl_crystal_density_meas      1.43
_exptl_crystal_F_000             364
_cod_data_source_file            cr1023.cif
_cod_data_source_block           cr1023a
_cod_original_cell_volume        820.5(2)
_cod_database_code               2001423
loop_
_space_group_symop_id
_space_group_symop_operation_xyz
1 x,y,z
2 -x,-y,-z
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Si(1) .28070(10) .67250(10) .82240(10) .0423(2)
C(1) .4696(3) .7710(3) .9472(2) .0582(9)
C(2) .2009(3) .4851(3) .8650(3) .0624(10)
C(3) .1285(2) .7900(2) .8086(2) .0428(6)
C(4) .1276(2) .9094(2) .7318(2) .0477(7)
C(5) .0165(2) .9935(2) .7278(2) .0497(7)
C(6) -.0123(3) 1.1233(2) .6558(3) .0625(9)
C(7) -.1901(3) 1.0759(3) .7729(3) .0710(10)
C(8) -.0932(2) .9630(2) .7964(2) .0535(7)
C(9) -.0969(3) .8455(3) .8714(2) .0600(9)
C(10) .0142(2) .7610(3) .8759(2) .0524(8)
C(11) .3127(2) .6494(2) .6548(2) .0405(6)
C(12) .4293(2) .7519(2) .6214(2) .0436(7)
C(13) .4522(2) .7255(2) .4997(2) .0434(6)
C(14) .5655(2) .8125(2) .4396(2) .0530(8)
C(15) .4237(3) .6058(3) .2940(2) .0576(9)
C(16) .3649(2) .6015(2) .4108(2) .0459(7)
C(17) .2485(3) .4982(2) .4395(2) .0527(7)
C(18) .2242(2) .5244(2) .5613(2) .0488(7)
O(1) -.1333(2) 1.1724(2) .6922(2) .0760(7)
O(2) .0473(2) 1.1853(2) .5816(2) .0832(8)
O(3) -.2987(2) 1.0923(2) .8110(2) .0998(10)
O(4) .5449(2) .7339(2) .31710(10) .0606(6)
O(5) .6600(2) .9281(2) .4783(2) .0716(7)
O(6) .3840(2) .5210(2) .1943(2) .0828(8)
H(1A) .549(4) .712(4) .950(3) ?
H(1B) .453(3) .788(3) 1.030(3) ?
H(1C) .511(3) .865(3) .925(3) ?
H(2A) .211(3) .493(3) .959(3) ?
H(2B) .269(4) .408(4) .853(3) ?
H(2C) .097(4) .438(3) .807(3) ?
H(4) .198(3) .938(2) .685(2) ?
H(9) -.174(3) .821(3) .920(2) ?
H(10) .014(3) .675(3) .927(2) ?
H(12) .495(3) .836(3) .683(2) ?
H(17) .190(3) .410(3) .383(2) ?
H(18) .144(3) .456(3) .588(2) ?
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
C(1) Si(1) C(2) 112.20(10)
C(2) Si(1) C(3) 109.10(10)
C(2) Si(1) C(11) 109.10(10)
Si(1) C(3) C(4) 120.9(2)
C(4) C(3) C(10) 118.1(2)
C(4) C(5) C(6) 130.1(2)
C(6) C(5) C(8) 107.9(2)
C(5) C(6) O(2) 132.2(2)
C(8) C(7) O(1) 107.5(2)
O(1) C(7) O(3) 121.4(3)
C(5) C(8) C(9) 121.1(2)
C(8) C(9) C(10) 117.1(2)
Si(1) C(11) C(12) 121.40(10)
C(12) C(11) C(18) 117.9(2)
C(12) C(13) C(14) 130.3(2)
C(14) C(13) C(16) 107.7(2)
C(13) C(14) O(5) 131.3(2)
C(16) C(15) O(4) 107.6(2)
O(4) C(15) O(6) 121.6(2)
C(13) C(16) C(17) 121.1(2)
C(16) C(17) C(18) 117.2(2)
C(6) O(1) C(7) 109.8(2)
C(1) Si(1) C(3) 109.50(10)
C(1) Si(1) C(11) 109.40(10)
C(3) Si(1) C(11) 107.30(10)
Si(1) C(3) C(10) 121.0(2)
C(3) C(4) C(5) 118.4(2)
C(4) C(5) C(8) 122.0(2)
C(5) C(6) O(1) 106.8(2)
O(1) C(6) O(2) 121.0(2)
C(8) C(7) O(3) 131.1(3)
C(5) C(8) C(7) 107.7(2)
C(7) C(8) C(9) 131.2(2)
C(3) C(10) C(9) 123.2(2)
Si(1) C(11) C(18) 120.70(10)
C(11) C(12) C(13) 118.80(10)
C(12) C(13) C(16) 122.0(2)
C(13) C(14) O(4) 107.4(2)
O(4) C(14) O(5) 121.3(2)
C(16) C(15) O(6) 130.8(2)
C(13) C(16) C(15) 107.6(2)
C(15) C(16) C(17) 131.2(2)
C(11) C(18) C(17) 123.0(2)
C(14) O(4) C(15) 109.6(2)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
Si(1) C(1) 1.853(2)
Si(1) C(3) 1.894(2)
C(3) C(4) 1.403(3)
C(4) C(5) 1.380(3)
C(5) C(8) 1.382(3)
C(6) O(2) 1.183(3)
C(7) O(1) 1.391(3)
C(8) C(9) 1.378(3)
C(11) C(12) 1.404(3)
C(12) C(13) 1.381(3)
C(13) C(16) 1.377(2)
C(14) O(5) 1.187(2)
C(15) O(4) 1.391(3)
C(16) C(17) 1.382(3)
Si(1) C(2) 1.860(3)
Si(1) C(11) 1.888(2)
C(3) C(10) 1.407(3)
C(5) C(6) 1.480(3)
C(6) O(1) 1.404(3)
C(7) C(8) 1.476(4)
C(7) O(3) 1.195(4)
C(9) C(10) 1.381(4)
C(11) C(18) 1.409(2)
C(13) C(14) 1.480(3)
C(14) O(4) 1.395(3)
C(15) C(16) 1.480(3)
C(15) O(6) 1.195(3)
C(17) C(18) 1.386(3)
