#------------------------------------------------------------------------------
#$Date: 2016-02-19 16:29:56 +0200 (Fri, 19 Feb 2016) $
#$Revision: 176759 $
#$URL: svn://www.crystallography.net/cod/cif/2/00/10/2001003.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_2001003
loop_
_publ_author_name
'Polborn, K.'
'Knorr, R.'
'Böhrer, P.'
_publ_section_title
;
 Front strain in the structure of
 2-benzylidene-1,1,3,3-tetramethylindan, a sterically congested styrene
;
_journal_issue                   3
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              490
_journal_page_last               492
_journal_paper_doi               10.1107/S0108270191008466
_journal_volume                  48
_journal_year                    1992
_chemical_formula_sum            'C20 H22'
_chemical_formula_weight         262.4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_cell_angle_alpha                90
_cell_angle_beta                 95.61(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.331(3)
_cell_length_b                   21.731(6)
_cell_length_c                   8.804(3)
_cell_volume                     1586.3(9)
_diffrn_radiation_type           Mo
_diffrn_radiation_wavelength     0.71069
_exptl_absorpt_coefficient_mu    0.057
_exptl_crystal_density_diffrn    1.099
_exptl_crystal_F_000             568
_cod_data_source_file            mu0272.cif
_cod_data_source_block           mu0272a
_cod_original_cell_volume        1586
_cod_database_code               2001003
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
C(1) .5395(2) .59080(10) .2326(2) .0550(10)
C(2) .6613(2) .59790(10) .3749(2) .0510(10)
C(3) .6252(2) .65650(10) .4621(2) .0570(10)
C(4) .3604(2) .72120(10) .4304(3) .0700(10)
C(5) .2118(3) .72920(10) .3495(3) .0800(10)
C(6) .1629(3) .69210(10) .2265(3) .0800(10)
C(7) .2629(2) .64650(10) .1812(2) .0690(10)
C(8) .4127(2) .63820(10) .2628(2) .0560(10)
C(9) .4606(2) .67480(10) .3871(2) .0560(10)
C(10) .4654(3) .52660(10) .2146(3) .0720(10)
C(11) .6164(3) .60780(10) .0859(2) .0760(10)
C(12) .7511(2) .70630(10) .4389(3) .0820(10)
C(13) .6189(2) .64520(10) .6341(2) .0720(10)
C(14) .7825(2) .56090(10) .4209(2) .0600(10)
C(15) .8380(2) .50460(10) .3470(2) .0560(10)
C(16) .9492(2) .50850(10) .2403(2) .0650(10)
C(17) 1.0031(3) .45580(10) .1730(2) .0720(10)
C(18) .9484(2) .39940(10) .2096(2) .0680(10)
C(19) .8409(2) .39460(10) .3189(3) .0730(10)
C(20) .7879(2) .44690(10) .3871(3) .0690(10)
H(4A) .3941 .7473 .5154 ?
H(5A) .1413 .7610 .3792 ?
H(6B) .0585 .6981 .1720 ?
H(7B) .2296 .6209 .0948 ?
H(10D) .4173 .5158 .3057 ?
H(10E) .3844 .5263 .1292 ?
H(10F) .5480 .4973 .1975 ?
H(11D) .5380 .6030 -.0007 ?
H(11E) .6526 .6498 .0921 ?
H(11F) .7066 .5812 .0750 ?
H(12D) .7551 .7134 .3317 ?
H(12E) .7219 .7438 .4871 ?
H(12F) .8550 .6930 .4835 ?
H(13D) .5402 .6141 .6487 ?
H(13E) .7229 .6319 .6786 ?
H(13F) .5897 .6827 .6822 ?
H(14B) .8431 .5722 .5152 ?
H(16B) .9891 .5480 .2129 ?
H(17B) 1.0805 .4592 .0995 ?
H(18B) .9839 .3632 .1599 ?
H(19B) .8031 .3549 .3473 ?
H(20A) .7146 .4431 .4642 ?
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
C(1) C(2) 1.541(3)
C(1) C(8) 1.516(3)
C(1) C(10) 1.528(3)
C(1) C(11) 1.542(3)
C(2) C(3) 1.533(3)
C(2) C(14) 1.322(2)
C(3) C(9) 1.515(3)
C(3) C(12) 1.535(3)
C(3) C(13) 1.540(3)
C(4) C(5) 1.378(3)
C(4) C(9) 1.385(3)
C(5) C(6) 1.379(3)
C(6) C(7) 1.379(3)
C(7) C(8) 1.390(3)
C(8) C(9) 1.381(3)
C(14) C(15) 1.481(3)
C(15) C(16) 1.385(3)
C(15) C(20) 1.378(3)
C(16) C(17) 1.384(3)
C(17) C(18) 1.358(3)
C(18) C(19) 1.381(3)
C(19) C(20) 1.379(3)
