data_2001978
_journal_name_full 'Acta Crystallographica, Section C'
_journal_year 1993
_journal_volume C49
_journal_page_first 331
_journal_page_last 333
loop_
_publ_author_name
'Fronczek, F.R.'
'Lickiss, P.D.'
_chemical_formula_moiety ?
_chemical_formula_sum 'C22 H54 Si6'
_chemical_formula_weight 487.2
_symmetry_cell_setting triclinic
_symmetry_space_group_name_H-M 'P -1'
_symmetry_space_group_name_Hall '-P 1'
_cell_length_a 9.0383(10)
_cell_length_b 9.3596(9)
_cell_length_c 11.855(3)
_cell_angle_alpha 68.207(13)
_cell_angle_beta 74.837(14)
_cell_angle_gamma 59.858(9)
_cell_volume 801.8(2)
_cell_formula_units_Z 1
_exptl_crystal_density_diffrn 1.009
_exptl_crystal_density_meas ?
_exptl_crystal_F_000 270
_exptl_absorpt_coefficient_mu 0.262
_diffrn_radiation_type Mo
_diffrn_radiation_wavelength 0.71073
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Si1 .40973(5) .64216(5) .22215(3)
Si2 .65915(5) .73653(4) .29251(4)
Si3 .78498(5) .35262(5) .29180(4)
C1 .52630(10)
.51780(10)
 .44730(10)
C2 .59230(10)
.56070(10)
 .31790(10)
C3 .2008(2) .7861(2) .2900(2)
C4 .3768(2) .4641(2) .2147(2)
C5 .4489(2) .7639(2) .0612(2)
C6 .7650(2) .6907(2) .4255(2)
C7 .8093(2) .7547(2) .1514(2)
C8 .4713(2) .9549(2) .2771(2)
C9 .8422(3) .3625(2) .1263(2)
C10 .9818(2) .3011(2) .3531(2)
C11 .7379(2) .1654(2) .3731(2)
H3A .207(3) .864(3) .291(2)
H3B .126(3) .819(3) .243(2)
H3C .162(3) .723(3) .350(2)
H4A .355(2) .397(2) .294(2)
H4B .285(2) .509(2) .174(2)
H4C .477(2) .387(2) .181(2)
H5A .552(2) .700(2) .023(2)
H5B .362(3) .792(2) .028(2)
H5C .443(2) .859(2) .065(2)
H6A .693(3) .702(3) .491(2)
H6B .854(3) .596(3) .434(2)
H6C .785(3) .767(2) .423(2)
H7A .909(2) .662(2) .161(2)
H7B .766(3) .774(2) .079(2)
H7C .829(3) .842(2) .152(2)
H8A .414(2) .995(2) .208(2)
H8B .393(2) .965(2) .345(2)
H8C .512(2) 1.030(2) .266(2)
H9A .767(3) .356(2) .106(2)
H9B .861(3) .444(2) .083(2)
H9C .936(3) .258(2) .123(2)
H10A 1.014(2) .383(2) .311(2)
H10B .969(2) .297(2) .438(2)
H10C 1.059(3) .214(2) .329(2)
H11A .738(3) .140(3) .449(2)
H11B .656(3) .166(3) .357(2)
H11C .825(3) .076(2) .369(2)