#------------------------------------------------------------------------------
#$Date: 2009-04-21 17:31:11 +0300 (Tue, 21 Apr 2009) $
#$Revision: 665 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/2001831.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_2001831
loop_
_publ_author_name
'Van Meervelt, L.'
_publ_section_title
;
 Structure of 1,3-bis(1-pyrenyl)hexamethyltrisilane
;
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              831
_journal_page_last               833
_journal_volume                  49
_journal_year                    1993
_chemical_formula_sum            'C38 H36 Si3'
_chemical_formula_weight         576.9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_type_scat_source           IntTabIV
_cell_angle_alpha                90
_cell_angle_beta                 110.700(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.213(2)
_cell_length_b                   22.656(4)
_cell_length_c                   13.397(3)
_cell_measurement_reflns_used    30
_cell_measurement_temperature    289
_cell_measurement_theta_max      13
_cell_measurement_theta_min      4
_cell_volume                     3183.7(11)
_diffrn_measurement_device       'Siemens P4-PC'
_diffrn_measurement_method       2\q-\q
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0365
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            4606
_diffrn_reflns_theta_max         58
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 50
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    1.522
_exptl_absorpt_correction_T_max  0.6690
_exptl_absorpt_correction_T_min  0.5655
_exptl_absorpt_correction_type   Semiempirical
_exptl_crystal_colour            'Colourless with yellow fluorescence'
_exptl_crystal_density_diffrn    1.204
_exptl_crystal_description       Parallelepiped
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.37
_refine_diff_density_min         -0.17
_refine_ls_goodness_of_fit_obs   1.23
_refine_ls_hydrogen_treatment    'refU [riding model (C-H=0.96\%A)]'
_refine_ls_number_parameters     406
_refine_ls_number_reflns         3459
_refine_ls_R_factor_obs          0.0424
_refine_ls_shift/esd_max         0.081
_refine_ls_structure_factor_coef F
_refine_ls_weighting_scheme      unit
_refine_ls_wR_factor_obs         0.0451
_reflns_number_observed          3459
_reflns_number_total             4352
_reflns_observed_criterion       F>4.0\s(F)
_[local]_cod_data_source_file    na1013.cif
_[local]_cod_data_source_block   na1013_structure_1_of_1
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Si(1) .57060(10) .39220(10) .71830(10) .0580(10)
Si(2) .42170(10) .37350(10) .80190(10) .0550(10)
Si(3) .47120(10) .28750(10) .90760(10) .0570(10)
C(17) .4796(6) .3965(3) .5699(3) .097(3)
C(18) .6881(4) .3303(2) .7406(4) .085(3)
C(19) .2619(4) .3564(3) .6933(4) .099(2)
C(20) .3971(4) .4405(2) .8755(3) .074(2)
C(21) .3373(4) .2707(2) .9576(4) .079(2)
C(22) .4781(5) .2238(2) .8196(4) .086(2)
C(1B) .6581(3) .4644(2) .7626(3) .0530(10)
C(2B) .6524(4) .5076(2) .6860(3) .065(2)
C(3B) .7124(4) .5614(2) .7126(3) .068(2)
C(4B) .8429(4) .6319(2) .8492(4) .075(2)
C(5B) .9083(4) .6450(2) .9506(4) .079(2)
C(6B) .9922(4) .6152(2) 1.1407(4) .080(2)
C(7B) 1.0063(4) .5734(2) 1.2186(4) .083(2)
C(8B) .9532(4) .5181(2) 1.1930(3) .071(2)
C(9B) .8208(3) .4479(2) 1.0565(3) .061(2)
C(10B) .7496(3) .4358(2) .9549(3) .056(2)
C(11B) .7814(3) .5760(2) .8175(3) .058(2)
C(12B) .9228(3) .6032(2) 1.0342(3) .063(2)
C(13B) .8817(3) .5038(2) 1.0874(3) .0540(10)
C(14B) .7315(3) .4772(2) .8700(3) .0490(10)
C(15B) .7924(3) .5329(2) .8982(3) .0490(10)
C(16B) .8659(3) .5467(2) 1.0065(3) .0510(10)
C(1) .6281(3) .2907(2) 1.0232(3) .0530(10)
C(2) .7301(4) .2549(2) 1.0226(3) .064(2)
C(3) .8447(4) .2537(2) 1.1072(4) .070(2)
C(4) .9814(4) .2870(2) 1.2885(4) .082(2)
C(5) .9989(4) .3215(2) 1.3729(4) .091(2)
C(6) .9218(6) .4005(3) 1.4631(4) .107(3)
C(7) .8272(6) .4385(3) 1.4645(4) .119(3)
C(8) .7116(5) .4401(2) 1.3815(3) .092(2)
C(9) .5711(4) .4033(2) 1.2048(3) .062(2)
C(10) .5525(3) .3676(2) 1.1206(3) .0540(10)
C(11) .8645(3) .2876(2) 1.1973(3) .063(2)
C(12) .9046(4) .3616(2) 1.3781(3) .081(2)
C(13) .6892(4) .4027(2) 1.2937(3) .066(2)
C(14) .6481(3) .3269(2) 1.1129(3) .0510(10)
C(15) .7662(3) .3257(2) 1.2010(3) .0540(10)
C(16) .7862(4) .3632(2) 1.2905(3) .062(2)
H(17A) .4182 .4279 .5553 .15(3)
H(17B) .4364 .3598 .5454 .122(19)
H(17C) .5379 .4041 .5334 .109(18)
H(18A) .7363 .3268 .8155 .12(2)
H(18B) .7449 .3383 .7029 .095(15)
H(18C) .6434 .2941 .7149 .15(2)
H(19A) .2705 .3224 .6538 .14(2)
H(19B) .2354 .3896 .6460 .17(3)
H(19C) .1993 .3487 .7254 .102(18)
H(20A) .4758 .4505 .9311 .114(19)
H(20B) .3334 .4321 .9061 .088(14)
H(20C) .3695 .4730 .8267 .103(16)
H(21A) .3300 .3022 1.0031 .13(2)
H(21B) .3550 .2344 .9971 .16(3)
H(21C) .2588 .2670 .8981 .125(19)
H(22A) .5452 .2304 .7920 .106(18)
H(22B) .3981 .2206 .7614 .14(2)
H(22C) .4944 .1880 .8605 .120(19)
H(2BA) .6050 .4993 .6123 .071(12)
H(3BA) .7061 .5894 .6572 .085(13)
H(4BA) .8366 .6610 .7954 .080(13)
H(5BA) .9468 .6833 .9682 .087(14)
H(6BA) 1.0308 .6533 1.1603 .094(15)
H(7BA) 1.0540 .5828 1.2918 .103(16)
H(8BA) .9653 .4893 1.2482 .093(15)
H(9BA) .8311 .4182 1.1100 .070(11)
H(10A) .7092 .3979 .9384 .054(10)
H(2A) .7198 .2307 .9615 .081(13)
H(3A) .9119 .2286 1.1033 .089(14)
H(4A) 1.0487 .2608 1.2883 .098(15)
H(5A) 1.0780 .3190 1.4321 .105(16)
H(6A) 1.0016 .4006 1.5218 .118(18)
H(7A) .8418 .4644 1.5244 .13(2)
H(8A) .6464 .4669 1.3839 .086(15)
H(9A) .5044 .4297 1.2055 .066(11)
H(10B) .4718 .3691 1.0629 .052(9)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_publ_flag
Si(1) Si(2) 2.355(2) yes
Si(1) C(18) 1.875(5) yes
Si(2) Si(3) 2.356(2) yes
Si(2) C(20) 1.881(5) yes
Si(3) C(22) 1.883(5) yes
C(1B) C(2B) 1.403(6) yes
C(2B) C(3B) 1.376(6) yes
C(4B) C(5B) 1.329(6) yes
C(5B) C(12B) 1.431(6) yes
C(6B) C(12B) 1.389(6) yes
C(8B) C(13B) 1.396(5) yes
C(9B) C(13B) 1.429(5) yes
C(11B) C(15B) 1.429(5) yes
C(13B) C(16B) 1.419(5) yes
C(15B) C(16B) 1.427(4) yes
C(1) C(14) 1.406(5) yes
C(3) C(11) 1.382(6) yes
C(4) C(11) 1.442(5) yes
C(6) C(7) 1.372(9) yes
C(7) C(8) 1.378(7) yes
C(9) C(10) 1.344(5) yes
C(10) C(14) 1.446(5) yes
C(12) C(16) 1.428(5) yes
C(14) C(15) 1.429(4) yes
Si(1) C(17) 1.890(4) yes
Si(1) C(1B) 1.892(4) yes
Si(2) C(19) 1.906(4) yes
Si(3) C(21) 1.886(6) yes
Si(3) C(1) 1.891(3) yes
C(1B) C(14B) 1.411(4) yes
C(3B) C(11B) 1.384(5) yes
C(4B) C(11B) 1.434(6) yes
C(6B) C(7B) 1.377(7) yes
C(7B) C(8B) 1.376(7) yes
C(9B) C(10B) 1.341(5) yes
C(10B) C(14B) 1.431(5) yes
C(12B) C(16B) 1.420(5) yes
C(14B) C(15B) 1.422(5) yes
C(1) C(2) 1.402(6) yes
C(2) C(3) 1.381(5) yes
C(4) C(5) 1.331(8) yes
C(5) C(12) 1.415(7) yes
C(6) C(12) 1.398(8) yes
C(8) C(13) 1.399(6) yes
C(9) C(13) 1.434(5) yes
C(11) C(15) 1.414(6) yes
C(13) C(16) 1.420(6) yes
C(15) C(16) 1.421(5) yes
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_publ_flag
Si(2) Si(1) C(17) 107.5(2) yes
C(17) Si(1) C(18) 107.1(3) yes
C(17) Si(1) C(1B) 108.2(2) yes
Si(1) Si(2) Si(3) 112.20(10) yes
Si(3) Si(2) C(19) 104.4(2) yes
Si(3) Si(2) C(20) 113.50(10) yes
Si(2) Si(3) C(21) 109.4(2) yes
C(21) Si(3) C(22) 106.4(2) yes
C(21) Si(3) C(1) 110.1(2) yes
Si(1) C(1B) C(2B) 119.3(2) yes
C(2B) C(1B) C(14B) 117.5(3) no
C(2B) C(3B) C(11B) 121.4(4) no
C(4B) C(5B) C(12B) 121.4(4) no
C(6B) C(7B) C(8B) 120.9(4) no
C(10B) C(9B) C(13B) 121.8(4) no
C(3B) C(11B) C(4B) 123.4(4) no
C(4B) C(11B) C(15B) 118.4(3) no
C(5B) C(12B) C(16B) 118.4(3) no
C(8B) C(13B) C(9B) 122.9(4) no
C(9B) C(13B) C(16B) 117.9(3) no
C(1B) C(14B) C(15B) 120.3(3) no
C(11B) C(15B) C(14B) 120.0(3) no
C(14B) C(15B) C(16B) 121.0(3) no
C(12B) C(16B) C(15B) 120.5(3) no
Si(3) C(1) C(2) 119.9(3) yes
C(2) C(1) C(14) 117.2(3) no
C(2) C(3) C(11) 121.4(4) no
C(4) C(5) C(12) 122.1(4) no
C(6) C(7) C(8) 121.0(5) no
C(10) C(9) C(13) 121.0(4) no
C(3) C(11) C(4) 123.5(4) no
C(4) C(11) C(15) 117.6(4) no
C(5) C(12) C(16) 118.0(4) no
C(8) C(13) C(9) 122.0(4) no
C(9) C(13) C(16) 118.3(3) no
C(1) C(14) C(15) 121.0(3) no
C(11) C(15) C(14) 119.2(3) no
C(14) C(15) C(16) 120.6(3) no
C(12) C(16) C(15) 120.1(4) no
Si(2) Si(1) C(18) 111.5(2) yes
Si(2) Si(1) C(1B) 112.50(10) yes
C(18) Si(1) C(1B) 109.9(2) yes
Si(1) Si(2) C(19) 107.8(2) yes
Si(1) Si(2) C(20) 111.3(2) yes
C(19) Si(2) C(20) 106.9(2) yes
Si(2) Si(3) C(22) 108.1(2) yes
Si(2) Si(3) C(1) 114.50(10) yes
C(22) Si(3) C(1) 108.0(2) yes
Si(1) C(1B) C(14B) 123.2(3) yes
C(1B) C(2B) C(3B) 122.5(3) no
C(5B) C(4B) C(11B) 122.3(4) no
C(7B) C(6B) C(12B) 121.1(4) no
C(7B) C(8B) C(13B) 120.4(4) no
C(9B) C(10B) C(14B) 122.6(3) no
C(3B) C(11B) C(15B) 118.2(3) no
C(5B) C(12B) C(6B) 122.8(4) no
C(6B) C(12B) C(16B) 118.8(4) no
C(8B) C(13B) C(16B) 119.2(4) no
C(1B) C(14B) C(10B) 123.0(3) no
C(10B) C(14B) C(15B) 116.7(3) no
C(11B) C(15B) C(16B) 119.0(3) no
C(12B) C(16B) C(13B) 119.6(3) no
C(13B) C(16B) C(15B) 119.9(3) no
Si(3) C(1) C(14) 122.9(3) yes
C(1) C(2) C(3) 122.1(4) no
C(5) C(4) C(11) 122.0(4) no
C(7) C(6) C(12) 121.5(4) no
C(7) C(8) C(13) 120.1(5) no
C(9) C(10) C(14) 123.0(3) no
C(3) C(11) C(15) 118.9(3) no
C(5) C(12) C(6) 123.7(4) no
C(6) C(12) C(16) 118.3(5) no
C(8) C(13) C(16) 119.7(4) no
C(1) C(14) C(10) 122.4(3) no
C(10) C(14) C(15) 116.6(3) no
C(11) C(15) C(16) 120.1(3) no
C(12) C(16) C(13) 119.3(4) no
C(13) C(16) C(15) 120.5(3) no