#------------------------------------------------------------------------------
#$Date: 2016-03-21 08:10:55 +0200 (Mon, 21 Mar 2016) $
#$Revision: 178598 $
#$URL: svn://www.crystallography.net/cod/cif/4/07/09/4070960.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_4070960
loop_
_publ_author_name
'Balazs, Gabor'
'Cloke, F. Geoffrey N.'
'Gagliardi, Laura'
'Green, Jennifer C.'
'Harrison, Andrew'
'Hitchcock, Peter B.'
'Shahi, Abdul Rehaman Moughal'
'Summerscales, Owen T.'
_publ_section_title
;
 A Dichromium(II) Bis(η8-pentalene) Double-Sandwich Complex with a Spin
 Equilibrium: Synthetic, Structural, Magnetic, and Theoretical Studies
;
_journal_issue                   9
_journal_name_full               Organometallics
_journal_page_first              2013
_journal_paper_doi               10.1021/om701153t
_journal_volume                  27
_journal_year                    2008
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C52 H92 Cr2 Si4'
_chemical_formula_sum            'C52 H92 Cr2 Si4'
_chemical_formula_weight         933.62
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      15
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.3
_audit_creation_date             2005-10-06T09:55:58-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 118.579(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   21.713(2)
_cell_length_b                   13.2479(13)
_cell_length_c                   21.2951(18)
_cell_measurement_reflns_used    272643
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.022
_cell_measurement_theta_min      3.395
_cell_measurement_wavelength     0.71073
_cell_volume                     5379.2(9)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device       '95mm CCD camera on κ-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'CCD rotation images, thick slices'
_diffrn_orient_matrix_type       'by Nonius Collect from scalepack cell'
_diffrn_orient_matrix_UB_11      -0.380583E-1
_diffrn_orient_matrix_UB_12      -0.473516E-1
_diffrn_orient_matrix_UB_13      -0.5292E-2
_diffrn_orient_matrix_UB_21      0.32577E-1
_diffrn_orient_matrix_UB_22      -0.317543E-1
_diffrn_orient_matrix_UB_23      0.469394E-1
_diffrn_orient_matrix_UB_31      -0.155178E-1
_diffrn_orient_matrix_UB_32      0.494699E-1
_diffrn_orient_matrix_UB_33      0.250646E-1
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0899
_diffrn_reflns_av_unetI/netI     0.0829
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            15523
_diffrn_reflns_theta_full        26
_diffrn_reflns_theta_max         26
_diffrn_reflns_theta_min         3.56
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    0.525
_exptl_absorpt_correction_T_max  0.898
_exptl_absorpt_correction_T_min  0.608
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
        [c.f. r.h. blessing, acta cryst. (1995), a51, 33-38]
;
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.153
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2032
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         1.308
_refine_diff_density_min         -0.535
_refine_diff_density_rms         0.076
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.154
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         5152
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.154
_refine_ls_R_factor_all          0.1317
_refine_ls_R_factor_gt           0.0817
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[σ²(Fo²)+(0.0084P)²+29.0995P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1452
_refine_ls_wR_factor_ref         0.168
_reflns_number_gt                3539
_reflns_number_total             5152
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om701153t_si.cif
_cod_data_source_block           oct405
_cod_original_cell_volume        5379.3(9)
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4070960
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, y, -z+1/2'
'x+1/2, y+1/2, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x, -y, z-1/2'
'-x+1/2, -y+1/2, -z'
'x+1/2, -y+1/2, z-1/2'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_disorder_assembly
_atom_site_disorder_group
Cr Cr 0.02990(4) 0.05373(6) 0.21901(4) 0.0389(2) Uani 1 1 d . . .
Si1 Si 0.18243(7) -0.12407(11) 0.30417(7) 0.0405(4) Uani 1 1 d . A 1
Si2 Si -0.04936(8) 0.25265(11) 0.07011(7) 0.0402(3) Uani 1 1 d . B 1
C1 C 0.0888(2) -0.0829(4) 0.2581(2) 0.0375(11) Uani 1 1 d . . 1
C2 C 0.0474(3) -0.0868(4) 0.1809(2) 0.0402(12) Uani 1 1 d . . 1
H2 H 0.0673 -0.0938 0.15 0.048 Uiso 1 1 calc R . 1
C3 C -0.0248(3) -0.0792(4) 0.1564(3) 0.0394(12) Uani 1 1 d . . 1
H3 H -0.0607 -0.0728 0.1082 0.047 Uiso 1 1 calc R . 1
C4 C -0.0340(2) -0.0831(3) 0.2199(2) 0.0373(11) Uani 1 1 d . . 1
C5 C 0.2403(3) -0.0502(4) 0.3875(3) 0.0496(13) Uani 1 1 d . A 1
H5 H 0.2514 0.0145 0.3708 0.06 Uiso 1 1 calc R A 1
C6 C 0.3110(3) -0.1014(6) 0.4345(3) 0.074(2) Uani 1 1 d . A 1
H6A H 0.3329 -0.1197 0.4052 0.112 Uiso 1 1 calc R A 1
H6B H 0.3036 -0.1624 0.4561 0.112 Uiso 1 1 calc R A 1
H6C H 0.3417 -0.0548 0.4723 0.112 Uiso 1 1 calc R A 1
C7 C 0.2060(3) -0.0206(5) 0.4325(3) 0.0590(16) Uani 1 1 d . A 1
H7A H 0.1611 0.0127 0.4021 0.089 Uiso 1 1 calc R A 1
H7B H 0.2369 0.0258 0.4703 0.089 Uiso 1 1 calc R A 1
H7C H 0.198 -0.0811 0.454 0.089 Uiso 1 1 calc R A 1
C8 C 0.1822(3) -0.2636(4) 0.3227(3) 0.0521(14) Uani 1 1 d . A 1
H8 H 0.2311 -0.2889 0.3404 0.062 Uiso 1 1 calc R A 1
C9 C 0.1616(4) -0.2864(5) 0.3803(4) 0.086(2) Uani 1 1 d . A 1
H9A H 0.1925 -0.2494 0.424 0.128 Uiso 1 1 calc R A 1
H9B H 0.166 -0.359 0.3903 0.128 Uiso 1 1 calc R A 1
H9C H 0.1129 -0.2655 0.3636 0.128 Uiso 1 1 calc R A 1
C10 C 0.1349(3) -0.3221(5) 0.2548(3) 0.0738(19) Uani 1 1 d . A 1
H10A H 0.1487 -0.3079 0.2181 0.111 Uiso 1 1 calc R A 1
H10B H 0.086 -0.3014 0.2374 0.111 Uiso 1 1 calc R A 1
H10C H 0.1394 -0.3946 0.2653 0.111 Uiso 1 1 calc R A 1
C11 C 0.2144(3) -0.1059(4) 0.2358(3) 0.0496(14) Uani 1 1 d . A 1
H11 H 0.1782 -0.1374 0.1904 0.06 Uiso 1 1 calc R A 1
C12 C 0.2840(3) -0.1589(6) 0.2549(3) 0.074(2) Uani 1 1 d . A 1
H12A H 0.281 -0.23 0.2658 0.112 Uiso 1 1 calc R A 1
H12B H 0.3221 -0.1261 0.2967 0.112 Uiso 1 1 calc R A 1
H12C H 0.2934 -0.1544 0.2143 0.112 Uiso 1 1 calc R A 1
C13 C 0.2184(3) 0.0049(5) 0.2191(3) 0.0680(18) Uani 1 1 d . A 1
H13A H 0.1736 0.0379 0.2066 0.102 Uiso 1 1 calc R A 1
H13B H 0.2283 0.0101 0.1789 0.102 Uiso 1 1 calc R A 1
H13C H 0.2559 0.0379 0.2612 0.102 Uiso 1 1 calc R A 1
C14 C -0.0062(3) 0.1916(4) 0.1605(2) 0.0382(11) Uani 1 1 d . . 1
C15 C 0.0691(3) 0.1954(4) 0.2036(3) 0.0424(12) Uani 1 1 d . . 1
H15 H 0.1001 0.2044 0.1842 0.051 Uiso 1 1 calc R . 1
C16 C 0.0921(3) 0.1846(4) 0.2772(3) 0.0394(12) Uani 1 1 d . . 1
H16 H 0.1389 0.1753 0.3142 0.047 Uiso 1 1 calc R . 1
C17 C 0.0295(2) 0.1905(3) 0.2848(2) 0.0374(11) Uani 1 1 d . . 1
C18 C 0.0166(3) 0.2493(4) 0.0356(3) 0.0496(14) Uani 1 1 d . B 1
H18 H 0.0583 0.2874 0.0717 0.06 Uiso 1 1 calc R B 1
C19 C 0.0446(3) 0.1455(5) 0.0305(3) 0.0584(16) Uani 1 1 d . B 1
H19A H 0.0609 0.1096 0.0759 0.088 Uiso 1 1 calc R B 1
H19B H 0.0837 0.1537 0.0201 0.088 Uiso 1 1 calc R B 1
H19C H 0.0072 0.1066 -0.008 0.088 Uiso 1 1 calc R B 1
C20 C -0.0081(3) 0.3072(5) -0.0354(3) 0.0679(18) Uani 1 1 d . B 1
H20A H -0.0259 0.3737 -0.0317 0.102 Uiso 1 1 calc R B 1
H20B H -0.0455 0.269 -0.0745 0.102 Uiso 1 1 calc R B 1
H20C H 0.0314 0.3156 -0.0451 0.102 Uiso 1 1 calc R B 1
C21 C -0.1369(3) 0.1952(4) 0.0077(3) 0.0485(13) Uani 1 1 d . B 1
H21 H -0.1607 0.1819 0.0371 0.058 Uiso 1 1 calc R B 1
C22 C -0.1306(3) 0.0929(4) -0.0222(3) 0.0540(14) Uani 1 1 d . B 1
H22A H -0.0987 0.0493 0.0172 0.081 Uiso 1 1 calc R B 1
H22B H -0.1121 0.1028 -0.0556 0.081 Uiso 1 1 calc R B 1
H22C H -0.1769 0.0612 -0.0472 0.081 Uiso 1 1 calc R B 1
C23 C -0.1862(3) 0.2647(5) -0.0539(3) 0.0667(17) Uani 1 1 d . B 1
H23A H -0.1897 0.3303 -0.0346 0.1 Uiso 1 1 calc R B 1
H23B H -0.2329 0.2339 -0.0792 0.1 Uiso 1 1 calc R B 1
H23C H -0.1675 0.2743 -0.0873 0.1 Uiso 1 1 calc R B 1
C24 C -0.0629(3) 0.3892(4) 0.0859(3) 0.0571(15) Uani 1 1 d . B 1
H24 H -0.0841 0.4233 0.0382 0.069 Uiso 1 1 calc R B 1
C25 C 0.0054(4) 0.4449(5) 0.1340(4) 0.080(2) Uani 1 1 d . B 1
H25A H 0.0382 0.4368 0.1148 0.119 Uiso 1 1 calc R B 1
H25B H 0.0263 0.4169 0.1824 0.119 Uiso 1 1 calc R B 1
H25C H -0.0044 0.5168 0.1354 0.119 Uiso 1 1 calc R B 1
C26 C -0.1156(4) 0.4019(5) 0.1149(3) 0.0730(19) Uani 1 1 d . B 1
H26A H -0.1593 0.3667 0.0834 0.11 Uiso 1 1 calc R B 1
H26B H -0.1253 0.4738 0.1166 0.11 Uiso 1 1 calc R B 1
H26C H -0.0955 0.3733 0.1632 0.11 Uiso 1 1 calc R B 1
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0 0 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Cr Cr 0.3209 0.6236 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Si Si 0.0817 0.0704 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
C2 Cr C14 127.27(18) . .
C2 Cr C1 39.58(17) . .
C14 Cr C1 158.94(17) . .
C2 Cr C15 123.20(18) . .
C14 Cr C15 39.37(18) . .
C1 Cr C15 126.21(18) . .
C2 Cr C16 137.22(19) . .
C14 Cr C16 66.87(19) . .
C1 Cr C16 111.03(19) . .
C15 Cr C16 37.87(17) . .
C2 Cr C3 37.77(18) . .
C14 Cr C3 113.07(19) . .
C1 Cr C3 66.75(18) . .
C15 Cr C3 138.58(18) . .
C16 Cr C3 174.12(17) . .
C2 Cr C17 155.54(18) . 2
C14 Cr C17 39.73(16) . 2
C1 Cr C17 159.99(17) . 2
C15 Cr C17 62.89(18) . 2
C16 Cr C17 63.87(18) . 2
C3 Cr C17 120.16(18) . 2
C2 Cr C4 62.89(17) . 2
C14 Cr C4 160.88(18) . 2
C1 Cr C4 39.58(17) . 2
C15 Cr C4 154.07(19) . 2
C16 Cr C4 118.55(18) . 2
C3 Cr C4 63.57(18) . 2
C17 Cr C4 123.64(17) 2 2
C2 Cr Cr 118.67(13) . 2
C14 Cr Cr 100.84(12) . 2
C1 Cr Cr 100.18(12) . 2
C15 Cr Cr 118.11(13) . 2
C16 Cr Cr 92.33(12) . 2
C3 Cr Cr 93.43(12) . 2
C17 Cr Cr 61.94(12) 2 2
C4 Cr Cr 61.70(12) 2 2
C2 Cr C4 62.01(17) . .
C14 Cr C4 128.82(18) . .
C1 Cr C4 65.07(17) . .
C15 Cr C4 168.18(18) . .
C16 Cr C4 146.90(17) . .
C3 Cr C4 37.94(16) . .
C17 Cr C4 107.80(16) 2 .
C4 Cr C4 36.7(2) 2 .
Cr Cr C4 58.24(11) 2 .
C1 Si1 C5 114.3(2) . .
C1 Si1 C8 106.5(2) . .
C5 Si1 C8 112.2(3) . .
C1 Si1 C11 105.3(2) . .
C5 Si1 C11 109.3(2) . .
C8 Si1 C11 108.8(3) . .
C14 Si2 C21 113.0(2) . .
C14 Si2 C24 105.9(2) . .
C21 Si2 C24 108.8(3) . .
C14 Si2 C18 106.8(2) . .
C21 Si2 C18 114.3(2) . .
C24 Si2 C18 107.6(3) . .
C2 C1 C4 101.8(4) . 2
C2 C1 Si1 121.0(3) . .
C4 C1 Si1 132.4(3) 2 .
C2 C1 Cr 70.0(3) . .
C4 C1 Cr 72.7(3) 2 .
Si1 C1 Cr 138.5(3) . .
C3 C2 C1 113.4(4) . .
C3 C2 Cr 73.0(3) . .
C1 C2 Cr 70.4(3) . .
C3 C2 H2 123.3 . .
C1 C2 H2 123.3 . .
Cr C2 H2 124.8 . .
C2 C3 C4 106.0(4) . .
C2 C3 Cr 69.2(3) . .
C4 C3 Cr 74.8(3) . .
C2 C3 H3 127 . .
C4 C3 H3 127 . .
Cr C3 H3 120.9 . .
C4 C4 C3 107.2(5) 2 .
C4 C4 C1 111.1(5) 2 2
C3 C4 C1 141.6(4) . 2
C4 C4 Cr 74.7(2) 2 2
C3 C4 Cr 122.2(3) . 2
C1 C4 Cr 67.7(3) 2 2
C4 C4 Cr 68.6(2) 2 .
C3 C4 Cr 67.2(3) . .
C1 C4 Cr 125.9(3) 2 .
Cr C4 Cr 60.06(13) 2 .
C7 C5 C6 110.0(5) . .
C7 C5 Si1 114.9(4) . .
C6 C5 Si1 113.2(4) . .
C7 C5 H5 106 . .
C6 C5 H5 106 . .
Si1 C5 H5 106 . .
C5 C6 H6A 109.5 . .
C5 C6 H6B 109.5 . .
H6A C6 H6B 109.5 . .
C5 C6 H6C 109.5 . .
H6A C6 H6C 109.5 . .
H6B C6 H6C 109.5 . .
C5 C7 H7A 109.5 . .
C5 C7 H7B 109.5 . .
H7A C7 H7B 109.5 . .
C5 C7 H7C 109.5 . .
H7A C7 H7C 109.5 . .
H7B C7 H7C 109.5 . .
C9 C8 C10 109.7(5) . .
C9 C8 Si1 113.1(4) . .
C10 C8 Si1 111.5(4) . .
C9 C8 H8 107.4 . .
C10 C8 H8 107.4 . .
Si1 C8 H8 107.4 . .
C8 C9 H9A 109.5 . .
C8 C9 H9B 109.5 . .
H9A C9 H9B 109.5 . .
C8 C9 H9C 109.5 . .
H9A C9 H9C 109.5 . .
H9B C9 H9C 109.5 . .
C8 C10 H10A 109.5 . .
C8 C10 H10B 109.5 . .
H10A C10 H10B 109.5 . .
C8 C10 H10C 109.5 . .
H10A C10 H10C 109.5 . .
H10B C10 H10C 109.5 . .
C13 C11 C12 110.1(5) . .
C13 C11 Si1 112.6(4) . .
C12 C11 Si1 114.4(4) . .
C13 C11 H11 106.4 . .
C12 C11 H11 106.4 . .
Si1 C11 H11 106.4 . .
C11 C12 H12A 109.5 . .
C11 C12 H12B 109.5 . .
H12A C12 H12B 109.5 . .
C11 C12 H12C 109.5 . .
H12A C12 H12C 109.5 . .
H12B C12 H12C 109.5 . .
C11 C13 H13A 109.5 . .
C11 C13 H13B 109.5 . .
H13A C13 H13B 109.5 . .
C11 C13 H13C 109.5 . .
H13A C13 H13C 109.5 . .
H13B C13 H13C 109.5 . .
C15 C14 C17 102.1(4) . 2
C15 C14 Si2 119.7(3) . .
C17 C14 Si2 128.6(4) 2 .
C15 C14 Cr 70.8(3) . .
C17 C14 Cr 72.5(3) 2 .
Si2 C14 Cr 146.3(3) . .
C16 C15 C14 113.2(4) . .
C16 C15 Cr 72.3(3) . .
C14 C15 Cr 69.8(3) . .
C16 C15 H15 123.4 . .
C14 C15 H15 123.4 . .
Cr C15 H15 126.2 . .
C15 C16 C17 105.6(4) . .
C15 C16 Cr 69.9(3) . .
C17 C16 Cr 75.4(3) . .
C15 C16 H16 127.2 . .
C17 C16 H16 127.2 . .
Cr C16 H16 119.6 . .
C17 C17 C16 108.1(5) 2 .
C17 C17 C14 110.2(5) 2 2
C16 C17 C14 141.6(4) . 2
C17 C17 Cr 75.1(2) 2 2
C16 C17 Cr 121.1(3) . 2
C14 C17 Cr 67.8(3) 2 2
C17 C17 Cr 68.2(2) 2 .
C16 C17 Cr 67.1(3) . .
C14 C17 Cr 126.4(3) 2 .
Cr C17 Cr 60.08(13) 2 .
C19 C18 C20 109.9(4) . .
C19 C18 Si2 116.7(4) . .
C20 C18 Si2 113.2(4) . .
C19 C18 H18 105.3 . .
C20 C18 H18 105.3 . .
Si2 C18 H18 105.3 . .
C18 C19 H19A 109.5 . .
C18 C19 H19B 109.5 . .
H19A C19 H19B 109.5 . .
C18 C19 H19C 109.5 . .
H19A C19 H19C 109.5 . .
H19B C19 H19C 109.5 . .
C18 C20 H20A 109.5 . .
C18 C20 H20B 109.5 . .
H20A C20 H20B 109.5 . .
C18 C20 H20C 109.5 . .
H20A C20 H20C 109.5 . .
H20B C20 H20C 109.5 . .
C22 C21 C23 109.8(4) . .
C22 C21 Si2 113.0(4) . .
C23 C21 Si2 114.6(4) . .
C22 C21 H21 106.3 . .
C23 C21 H21 106.3 . .
Si2 C21 H21 106.3 . .
C21 C22 H22A 109.5 . .
C21 C22 H22B 109.5 . .
H22A C22 H22B 109.5 . .
C21 C22 H22C 109.5 . .
H22A C22 H22C 109.5 . .
H22B C22 H22C 109.5 . .
C21 C23 H23A 109.5 . .
C21 C23 H23B 109.5 . .
H23A C23 H23B 109.5 . .
C21 C23 H23C 109.5 . .
H23A C23 H23C 109.5 . .
H23B C23 H23C 109.5 . .
C25 C24 C26 110.2(5) . .
C25 C24 Si2 113.4(4) . .
C26 C24 Si2 112.6(4) . .
C25 C24 H24 106.7 . .
C26 C24 H24 106.7 . .
Si2 C24 H24 106.7 . .
C24 C25 H25A 109.5 . .
C24 C25 H25B 109.5 . .
H25A C25 H25B 109.5 . .
C24 C25 H25C 109.5 . .
H25A C25 H25C 109.5 . .
H25B C25 H25C 109.5 . .
C24 C26 H26A 109.5 . .
C24 C26 H26B 109.5 . .
H26A C26 H26B 109.5 . .
C24 C26 H26C 109.5 . .
H26A C26 H26C 109.5 . .
H26B C26 H26C 109.5 . .
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
Cr C2 2.136(5) .
Cr C14 2.138(5) .
Cr C1 2.142(5) .
Cr C15 2.151(5) .
Cr C16 2.182(5) .
Cr C3 2.186(5) .
Cr C17 2.203(5) 2
Cr C4 2.209(5) 2
Cr Cr 2.2514(15) 2
Cr C4 2.288(5) .
Si1 C1 1.867(5) .
Si1 C5 1.885(5) .
Si1 C8 1.890(6) .
Si1 C11 1.903(5) .
Si2 C14 1.873(5) .
Si2 C21 1.881(5) .
Si2 C24 1.888(6) .
Si2 C18 1.898(5) .
C1 C2 1.448(6) .
C1 C4 1.474(6) 2
C2 C3 1.400(7) .
C2 H2 0.95 .
C3 C4 1.457(6) .
C3 H3 0.95 .
C4 C4 1.418(9) 2
C4 C1 1.474(6) 2
C4 Cr 2.209(5) 2
C5 C7 1.519(7) .
C5 C6 1.532(8) .
C5 H5 1 .
C6 H6A 0.98 .
C6 H6B 0.98 .
C6 H6C 0.98 .
C7 H7A 0.98 .
C7 H7B 0.98 .
C7 H7C 0.98 .
C8 C9 1.524(8) .
C8 C10 1.525(8) .
C8 H8 1 .
C9 H9A 0.98 .
C9 H9B 0.98 .
C9 H9C 0.98 .
C10 H10A 0.98 .
C10 H10B 0.98 .
C10 H10C 0.98 .
C11 C13 1.522(8) .
C11 C12 1.535(7) .
C11 H11 1 .
C12 H12A 0.98 .
C12 H12B 0.98 .
C12 H12C 0.98 .
C13 H13A 0.98 .
C13 H13B 0.98 .
C13 H13C 0.98 .
C14 C15 1.445(7) .
C14 C17 1.476(6) 2
C15 C16 1.406(6) .
C15 H15 0.95 .
C16 C17 1.445(6) .
C16 H16 0.95 .
C17 C17 1.420(9) 2
C17 C14 1.476(6) 2
C17 Cr 2.203(5) 2
C18 C19 1.529(8) .
C18 C20 1.545(7) .
C18 H18 1 .
C19 H19A 0.98 .
C19 H19B 0.98 .
C19 H19C 0.98 .
C20 H20A 0.98 .
C20 H20B 0.98 .
C20 H20C 0.98 .
C21 C22 1.531(7) .
C21 C23 1.541(7) .
C21 H21 1 .
C22 H22A 0.98 .
C22 H22B 0.98 .
C22 H22C 0.98 .
C23 H23A 0.98 .
C23 H23B 0.98 .
C23 H23C 0.98 .
C24 C25 1.531(9) .
C24 C26 1.548(8) .
C24 H24 1 .
C25 H25A 0.98 .
C25 H25B 0.98 .
C25 H25C 0.98 .
C26 H26A 0.98 .
C26 H26B 0.98 .
C26 H26C 0.98 .
