data_2000194
_journal_name_full 'Acta Cryst. C'
_journal_year   1991
_journal_volume  47
_journal_page_first  2482
_journal_page_last  2484
loop_
_publ_author_name
 'Ammon, H.L.'
 'DeShong, P.'
 'Simpson, D.'
_chemical_formula_sum  'C15 H28 O4 Si1'
_chemical_formula_weight  300.5
_symmetry_cell_setting  monoclinic
_symmetry_space_group_name_H-M  'P 1 21/a 1'
_symmetry_space_group_name_Hall  '-P 2yab'
_cell_length_a  11.194(4)
_cell_length_b  10.944(3)
_cell_length_c  14.815(5)
_cell_angle_alpha  90
_cell_angle_beta  95.01(3)
_cell_angle_gamma  90
_cell_volume  1808(2)
_cell_formula_units_Z  4
_exptl_crystal_density_diffrn  1.104
_exptl_crystal_density_meas  ?
_exptl_crystal_F_000  656
_exptl_absorpt_coefficient_mu  0.143
_diffrn_radiation_type  Mo
_diffrn_radiation_wavelength  0.71069
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
 Si .75410(10) .02940(10)    .19004(8)
 O1 .7482(3) -.2532(3) .4494(2)
 O2 .6063(3) -.3391(3) .3600(2)
 O3 .4288(3) .0717(3) .3707(2)
 O4 .7200(2) -.0667(2) .2689(2)
 C2 .6458(4) -.2477(4) .3953(3)
 C3 .5920(3) -.1223(4) .3829(3)
 C4 .6903(3) -.0345(3) .3578(2)
 C5 .7995(4) -.0428(4) .4259(3)
 C6 .7884(4) -.1412(4) .4953(3)
 C7 .9037(5) -.1691(6) .5505(4)
 C8 .4818(4) -.1238(4) .3163(3)
 C9 .4068(4) -.0091(4) .3165(3)
 C10 .3023(5) -.0006(7) .2468(4)
 C11 .8921(8) .1137(8) .2265(4)
 C12 .6309(7) .1395(6) .1654(5)
 C13 .7764(4) -.0694(4) .0902(3)
 C14 .8110(10) .0092(7) .0115(4)
 C15 .6587(7) -.1390(10)  .0631(6)
 C16 .8750(10) -.1607(8) .1129(5)
 H3 .5656 -.0956 .4412
 H4 .6601 .0502 .3559
 H5A .8190 .0343 .4550
 H5B .8709 -.0632 .3932
 H6 .7302 -.1146 .5361
 H7A .8936 -.2325 .5946
 H7B .9646 -.1985 .5129
 H7C .9372 -.0994 .5830
 H8A .5054 -.1356 .2558
 H8B .4304 -.1918 .3286
 H10A .2281 .0034 .2745
 H10B .3083 .0664 .2080
 H10C .3034 -.0750 .2133
 H11A .9587 .0586 .2375
 H11B .9118 .1701 .1802
 H11C .8833 .1585 .2805
 H12A .6157 .1867 .2168
 H12B .6491 .1961 .1176
 H12C .5575 .0986 .1436
 H14A .8819 .0533 .0283
 H14B .8194 -.0379 -.0408
 H14C .7473 .0696 -.0042
 H15A .5950 -.0844 .0488
 H15B .6688 -.1915 .0134
 H15C .6392 -.1894 .1137
 H16A .8545 -.2122 .1625
 H16B .8841 -.2130 .0621
 H16C .9475 -.1207 .1299