#------------------------------------------------------------------------------
#$Date: 2016-03-23 03:51:02 +0200 (Wed, 23 Mar 2016) $
#$Revision: 179266 $
#$URL: svn://www.crystallography.net/cod/cif/4/31/86/4318681.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_4318681
loop_
_publ_author_name
'Wilda Vargas'
'Ulrich Englich'
'Karin Ruhlandt-Senge'
_publ_section_title
;
 A Novel Group of Alkaline Earth Metal Amides: Syntheses and
 Characterization of M[N(2,6-iPr2C6H3)(SiMe3)]2(THF)2 (M = Mg, Ca, Sr, Ba)
 and the Linear, Two-Coordinate Mg[N(2,6-iPr2C6H3)(SiMe3)]2
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5602
_journal_page_last               5608
_journal_paper_doi               10.1021/ic0203668
_journal_volume                  41
_journal_year                    2002
_chemical_formula_sum            'C38 H68 N2 O2 Si2 Sr'
_chemical_formula_weight         728.74
_chemical_name_systematic
;

  ?

;
_space_group_IT_number           13
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yac'
_symmetry_space_group_name_H-M   'P 1 2/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 102.035(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   20.5874(5)
_cell_length_b                   9.8785(2)
_cell_length_c                   20.8522(5)
_cell_measurement_reflns_used    7067
_cell_measurement_temperature    95(2)
_cell_volume                     4147.56(17)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      95(2)
_diffrn_measured_fraction_theta_full 0.971
_diffrn_measured_fraction_theta_max 0.971
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0493
_diffrn_reflns_av_sigmaI/netI    0.0590
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            35420
_diffrn_reflns_theta_full        28.38
_diffrn_reflns_theta_max         28.38
_diffrn_reflns_theta_min         1.26
_diffrn_standards_decay_%        No
_exptl_absorpt_coefficient_mu    1.389
_exptl_absorpt_correction_T_max  0.8083
_exptl_absorpt_correction_T_min  0.4895
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing, Acta Cryst. (1995) A51 33-38.'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.167
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             1568
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.791
_refine_diff_density_min         -0.622
_refine_diff_density_rms         0.088
_refine_ls_extinction_coef       0.00073(14)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc²λ³/sin(2θ)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.103
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     408
_refine_ls_number_reflns         10106
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.103
_refine_ls_R_factor_all          0.0756
_refine_ls_R_factor_gt           0.0509
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[σ²(Fo²)+(0.0349P)²+10.4335P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1245
_refine_ls_wR_factor_ref         0.1306
_reflns_number_gt                7428
_reflns_number_total             10106
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic0203668_4.cif
_cod_data_source_block           wvg007
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_cell_volume        4147.56(16)
_cod_database_code               4318681
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x+1/2, y, -z+1/2'
'-x, -y, -z'
'x-1/2, -y, 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
Sr1 Sr 0.7500 0.42547(4) 0.2500 0.01668(11) Uani 1 2 d S . .
N1 N 0.85022(14) 0.5494(3) 0.30615(14) 0.0195(6) Uani 1 1 d . . .
C1 C 0.89426(16) 0.4723(3) 0.27854(17) 0.0192(7) Uani 1 1 d . . .
C2 C 0.90592(17) 0.5062(4) 0.21510(18) 0.0231(8) Uani 1 1 d . . .
C3 C 0.94337(18) 0.4181(4) 0.18452(19) 0.0277(8) Uani 1 1 d . . .
H3A H 0.9497 0.4394 0.1418 0.033 Uiso 1 1 calc R . .
C4 C 0.97141(19) 0.3008(4) 0.2147(2) 0.0304(9) Uani 1 1 d . . .
H4A H 0.9966 0.2426 0.1930 0.036 Uiso 1 1 calc R . .
C5 C 0.96217(18) 0.2697(4) 0.2769(2) 0.0282(8) Uani 1 1 d . . .
H5A H 0.9821 0.1902 0.2979 0.034 Uiso 1 1 calc R . .
C6 C 0.92444(17) 0.3515(3) 0.30949(19) 0.0228(7) Uani 1 1 d . . .
C7 C 0.88090(18) 0.6387(4) 0.18085(19) 0.0261(8) Uani 1 1 d . . .
H7A H 0.8573 0.6902 0.2104 0.031 Uiso 1 1 calc R . .
C8 C 0.9387(2) 0.7263(4) 0.1688(2) 0.0399(11) Uani 1 1 d . . .
H8A H 0.9213 0.8104 0.1468 0.060 Uiso 1 1 calc R . .
H8B H 0.9635 0.6767 0.1410 0.060 Uiso 1 1 calc R . .
H8C H 0.9683 0.7477 0.2108 0.060 Uiso 1 1 calc R . .
C9 C 0.8322(2) 0.6156(5) 0.1162(2) 0.0361(10) Uani 1 1 d . . .
H9A H 0.7951 0.5601 0.1238 0.054 Uiso 1 1 calc R . .
H9B H 0.8548 0.5689 0.0856 0.054 Uiso 1 1 calc R . .
H9C H 0.8153 0.7030 0.0976 0.054 Uiso 1 1 calc R . .
C10 C 0.91837(18) 0.3154(4) 0.37851(19) 0.0260(8) Uani 1 1 d . . .
H10A H 0.8817 0.3717 0.3893 0.031 Uiso 1 1 calc R . .
C11 C 0.9008(2) 0.1674(4) 0.3867(2) 0.0354(9) Uani 1 1 d . . .
H11A H 0.8601 0.1447 0.3549 0.053 Uiso 1 1 calc R . .
H11B H 0.8938 0.1527 0.4313 0.053 Uiso 1 1 calc R . .
H11C H 0.9372 0.1096 0.3792 0.053 Uiso 1 1 calc R . .
C12 C 0.9823(2) 0.3519(5) 0.4279(2) 0.0377(10) Uani 1 1 d . . .
H12A H 0.9936 0.4469 0.4222 0.057 Uiso 1 1 calc R . .
H12B H 1.0187 0.2938 0.4206 0.057 Uiso 1 1 calc R . .
H12C H 0.9755 0.3381 0.4726 0.057 Uiso 1 1 calc R . .
Si1 Si 0.86786(5) 0.67889(9) 0.35991(5) 0.0188(2) Uani 1 1 d . . .
C13 C 0.86125(19) 0.6357(4) 0.44610(18) 0.0283(8) Uani 1 1 d . . .
H13A H 0.8920 0.5618 0.4625 0.042 Uiso 1 1 calc R . .
H13B H 0.8157 0.6075 0.4465 0.042 Uiso 1 1 calc R . .
H13C H 0.8726 0.7154 0.4742 0.042 Uiso 1 1 calc R . .
C14 C 0.80730(19) 0.8202(4) 0.3340(2) 0.0280(8) Uani 1 1 d . . .
H14A H 0.8085 0.8476 0.2891 0.042 Uiso 1 1 calc R . .
H14B H 0.8193 0.8974 0.3636 0.042 Uiso 1 1 calc R . .
H14C H 0.7625 0.7893 0.3357 0.042 Uiso 1 1 calc R . .
C15 C 0.95302(19) 0.7524(4) 0.3657(2) 0.0318(9) Uani 1 1 d . . .
H15B H 0.9590 0.7771 0.3217 0.048 Uiso 1 1 calc R . .
H15C H 0.9866 0.6853 0.3847 0.048 Uiso 1 1 calc R . .
H15D H 0.9580 0.8333 0.3935 0.048 Uiso 1 1 calc R . .
O1 O 0.72442(13) 0.2390(2) 0.32244(12) 0.0252(6) Uani 1 1 d . . .
C16 C 0.68956(19) 0.1113(4) 0.30520(18) 0.0255(8) Uani 1 1 d . . .
H16D H 0.7187 0.0453 0.2893 0.031 Uiso 1 1 calc R . .
H16E H 0.6494 0.1256 0.2704 0.031 Uiso 1 1 calc R . .
C17 C 0.67076(19) 0.0607(4) 0.36752(19) 0.0281(8) Uani 1 1 d . . .
H17A H 0.6259 0.0923 0.3707 0.034 Uiso 1 1 calc R . .
H17B H 0.6720 -0.0394 0.3697 0.034 Uiso 1 1 calc R . .
C18 C 0.7236(2) 0.1224(4) 0.42089(19) 0.0288(8) Uani 1 1 d . . .
H18A H 0.7654 0.0699 0.4278 0.035 Uiso 1 1 calc R . .
H18B H 0.7084 0.1290 0.4628 0.035 Uiso 1 1 calc R . .
C19 C 0.7317(2) 0.2610(4) 0.39256(19) 0.0304(9) Uani 1 1 d . . .
H19A H 0.6973 0.3241 0.4014 0.037 Uiso 1 1 calc R . .
H19B H 0.7761 0.2990 0.4116 0.037 Uiso 1 1 calc R . .
Sr2 Sr 0.7500 0.21043(4) 0.7500 0.01819(12) Uani 1 2 d S . .
N2 N 0.69328(15) 0.0972(3) 0.64705(14) 0.0223(6) Uani 1 1 d . . .
C20 C 0.72746(18) 0.1737(3) 0.60771(17) 0.0212(7) Uani 1 1 d . . .
C21 C 0.69973(19) 0.2957(4) 0.57577(17) 0.0240(8) Uani 1 1 d . . .
C22 C 0.7384(2) 0.3775(4) 0.54469(18) 0.0284(8) Uani 1 1 d . . .
H22A H 0.7197 0.4584 0.5241 0.034 Uiso 1 1 calc R . .
C23 C 0.8037(2) 0.3447(4) 0.54264(18) 0.0289(8) Uani 1 1 d . . .
H23A H 0.8297 0.4035 0.5221 0.035 Uiso 1 1 calc R . .
C24 C 0.8299(2) 0.2250(4) 0.57109(18) 0.0277(8) Uani 1 1 d . . .
H24A H 0.8740 0.2006 0.5688 0.033 Uiso 1 1 calc R . .
C25 C 0.79366(19) 0.1401(4) 0.60270(17) 0.0235(8) Uani 1 1 d . . .
C26 C 0.6275(2) 0.3319(4) 0.57326(19) 0.0281(8) Uani 1 1 d . . .
H26A H 0.6132 0.2843 0.6103 0.034 Uiso 1 1 calc R . .
C27 C 0.6156(2) 0.4832(4) 0.5803(2) 0.0415(11) Uani 1 1 d . . .
H27A H 0.6436 0.5162 0.6212 0.062 Uiso 1 1 calc R . .
H27B H 0.5688 0.4987 0.5811 0.062 Uiso 1 1 calc R . .
H27C H 0.6269 0.5317 0.5431 0.062 Uiso 1 1 calc R . .
C28 C 0.5835(2) 0.2810(4) 0.5088(2) 0.0359(10) Uani 1 1 d . . .
H28A H 0.5371 0.3045 0.5079 0.054 Uiso 1 1 calc R . .
H28B H 0.5877 0.1824 0.5060 0.054 Uiso 1 1 calc R . .
H28C H 0.5977 0.3235 0.4715 0.054 Uiso 1 1 calc R . .
C29 C 0.82572(19) 0.0072(4) 0.63068(19) 0.0287(8) Uani 1 1 d . . .
H29A H 0.7923 -0.0446 0.6494 0.034 Uiso 1 1 calc R . .
C30 C 0.8865(2) 0.0312(5) 0.6856(2) 0.0370(10) Uani 1 1 d . . .
H30A H 0.9055 -0.0561 0.7023 0.055 Uiso 1 1 calc R . .
H30B H 0.8733 0.0818 0.7212 0.055 Uiso 1 1 calc R . .
H30C H 0.9197 0.0832 0.6685 0.055 Uiso 1 1 calc R . .
C31 C 0.8457(3) -0.0796(4) 0.5767(2) 0.0446(11) Uani 1 1 d . . .
H31A H 0.8659 -0.1642 0.5958 0.067 Uiso 1 1 calc R . .
H31B H 0.8778 -0.0297 0.5570 0.067 Uiso 1 1 calc R . .
H31C H 0.8062 -0.1002 0.5429 0.067 Uiso 1 1 calc R . .
Si2 Si 0.64177(5) -0.03551(10) 0.62333(5) 0.0223(2) Uani 1 1 d . . .
C32 C 0.55169(19) 0.0034(4) 0.6211(2) 0.0327(9) Uani 1 1 d . . .
H32A H 0.5471 0.0408 0.6635 0.049 Uiso 1 1 calc R . .
H32B H 0.5255 -0.0799 0.6123 0.049 Uiso 1 1 calc R . .
H32C H 0.5356 0.0695 0.5864 0.049 Uiso 1 1 calc R . .
C33 C 0.6643(2) -0.1775(4) 0.6832(2) 0.0286(8) Uani 1 1 d . . .
H33A H 0.6630 -0.1454 0.7274 0.043 Uiso 1 1 calc R . .
H33B H 0.7092 -0.2094 0.6823 0.043 Uiso 1 1 calc R . .
H33C H 0.6327 -0.2519 0.6712 0.043 Uiso 1 1 calc R . .
C34 C 0.6459(2) -0.1067(4) 0.5404(2) 0.0359(10) Uani 1 1 d . . .
H34A H 0.6922 -0.1283 0.5393 0.054 Uiso 1 1 calc R . .
H34B H 0.6288 -0.0398 0.5064 0.054 Uiso 1 1 calc R . .
H34C H 0.6190 -0.1892 0.5325 0.054 Uiso 1 1 calc R . .
O2 O 0.82683(12) 0.4046(3) 0.74186(13) 0.0250(6) Uani 1 1 d . . .
C35 C 0.89874(18) 0.3965(4) 0.7573(2) 0.0307(9) Uani 1 1 d . . .
H35A H 0.9137 0.3021 0.7672 0.037 Uiso 1 1 calc R . .
H35B H 0.9176 0.4545 0.7954 0.037 Uiso 1 1 calc R . .
C36 C 0.91882(18) 0.4471(4) 0.6959(2) 0.0298(9) Uani 1 1 d . . .
H36A H 0.9654 0.4789 0.7052 0.036 Uiso 1 1 calc R . .
H36B H 0.9133 0.3759 0.6618 0.036 Uiso 1 1 calc R . .
C37 C 0.87096(19) 0.5628(4) 0.6753(2) 0.0294(8) Uani 1 1 d . . .
H37A H 0.8606 0.5734 0.6271 0.035 Uiso 1 1 calc R . .
H37B H 0.8896 0.6489 0.6956 0.035 Uiso 1 1 calc R . .
C38 C 0.80885(18) 0.5218(4) 0.70045(19) 0.0260(8) Uani 1 1 d . . .
H38A H 0.7944 0.5967 0.7258 0.031 Uiso 1 1 calc R . .
H38B H 0.7720 0.4994 0.6632 0.031 Uiso 1 1 calc R . .
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 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 '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'
Sr Sr -1.5307 3.2498 '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
_geom_angle_publ_flag
N1 Sr1 N1 120.69(13) . 2_655 ?
N1 Sr1 O1 109.73(9) . . ?
N1 Sr1 O1 112.93(9) 2_655 . ?
N1 Sr1 O1 112.93(9) . 2_655 ?
N1 Sr1 O1 109.73(9) 2_655 2_655 ?
O1 Sr1 O1 85.41(12) . 2_655 ?
N1 Sr1 C1 28.24(9) . . ?
N1 Sr1 C1 136.50(9) 2_655 . ?
O1 Sr1 C1 108.88(9) . . ?
O1 Sr1 C1 84.69(9) 2_655 . ?
N1 Sr1 C1 136.50(9) . 2_655 ?
N1 Sr1 C1 28.24(9) 2_655 2_655 ?
O1 Sr1 C1 84.68(9) . 2_655 ?
O1 Sr1 C1 108.88(9) 2_655 2_655 ?
C1 Sr1 C1 161.92(13) . 2_655 ?
C1 N1 Si1 128.2(2) . . ?
C1 N1 Sr1 94.82(19) . . ?
Si1 N1 Sr1 136.99(15) . . ?
N1 C1 C2 120.1(3) . . ?
N1 C1 C6 121.7(3) . . ?
C2 C1 C6 118.0(3) . . ?
N1 C1 Sr1 56.93(16) . . ?
C2 C1 Sr1 101.9(2) . . ?
C6 C1 Sr1 106.5(2) . . ?
C3 C2 C1 119.3(3) . . ?
C3 C2 C7 118.9(3) . . ?
C1 C2 C7 121.8(3) . . ?
C4 C3 C2 121.9(4) . . ?
C5 C4 C3 119.1(3) . . ?
C4 C5 C6 121.9(4) . . ?
C5 C6 C1 119.7(4) . . ?
C5 C6 C10 119.6(3) . . ?
C1 C6 C10 120.6(3) . . ?
C9 C7 C2 112.4(3) . . ?
C9 C7 C8 109.3(3) . . ?
C2 C7 C8 111.2(3) . . ?
C6 C10 C11 113.6(3) . . ?
C6 C10 C12 110.7(3) . . ?
C11 C10 C12 109.9(3) . . ?
N1 Si1 C14 109.55(16) . . ?
N1 Si1 C15 113.82(16) . . ?
C14 Si1 C15 106.64(18) . . ?
N1 Si1 C13 114.47(17) . . ?
C14 Si1 C13 105.54(18) . . ?
C15 Si1 C13 106.22(19) . . ?
C19 O1 C16 108.6(3) . . ?
C19 O1 Sr1 120.3(2) . . ?
C16 O1 Sr1 129.9(2) . . ?
O1 C16 C17 105.9(3) . . ?
C18 C17 C16 103.0(3) . . ?
C17 C18 C19 101.5(3) . . ?
O1 C19 C18 105.1(3) . . ?
N2 Sr2 N2 126.52(13) 2_656 . ?
N2 Sr2 O2 102.28(9) 2_656 . ?
N2 Sr2 O2 118.28(9) . . ?
N2 Sr2 O2 118.28(9) 2_656 2_656 ?
N2 Sr2 O2 102.28(9) . 2_656 ?
O2 Sr2 O2 80.57(11) . 2_656 ?
N2 Sr2 C20 28.65(9) 2_656 2_656 ?
N2 Sr2 C20 140.00(10) . 2_656 ?
O2 Sr2 C20 101.18(9) . 2_656 ?
O2 Sr2 C20 89.72(9) 2_656 2_656 ?
N2 Sr2 C20 140.00(10) 2_656 . ?
N2 Sr2 C20 28.65(9) . . ?
O2 Sr2 C20 89.72(9) . . ?
O2 Sr2 C20 101.18(9) 2_656 . ?
C20 Sr2 C20 165.76(13) 2_656 . ?
C20 N2 Si2 127.2(2) . . ?
C20 N2 Sr2 93.4(2) . . ?
Si2 N2 Sr2 138.87(16) . . ?
N2 C20 C25 121.3(3) . . ?
N2 C20 C21 121.5(3) . . ?
C25 C20 C21 117.0(3) . . ?
N2 C20 Sr2 57.90(17) . . ?
C25 C20 Sr2 98.7(2) . . ?
C21 C20 Sr2 109.2(2) . . ?
C22 C21 C20 119.6(4) . . ?
C22 C21 C26 120.0(3) . . ?
C20 C21 C26 120.3(3) . . ?
C21 C22 C23 122.1(4) . . ?
C24 C23 C22 118.7(4) . . ?
C25 C24 C23 121.6(4) . . ?
C24 C25 C20 120.9(3) . . ?
C24 C25 C29 118.1(3) . . ?
C20 C25 C29 121.0(3) . . ?
C21 C26 C27 113.7(3) . . ?
C21 C26 C28 110.3(3) . . ?
C27 C26 C28 109.1(3) . . ?
C30 C29 C25 111.9(3) . . ?
C30 C29 C31 109.4(3) . . ?
C25 C29 C31 111.1(3) . . ?
N2 Si2 C33 109.40(17) . . ?
N2 Si2 C32 113.71(17) . . ?
C33 Si2 C32 106.00(18) . . ?
N2 Si2 C34 114.29(18) . . ?
C33 Si2 C34 106.24(19) . . ?
C32 Si2 C34 106.6(2) . . ?
C38 O2 C35 107.4(3) . . ?
C38 O2 Sr2 124.4(2) . . ?
C35 O2 Sr2 124.8(2) . . ?
O2 C35 C36 103.9(3) . . ?
C37 C36 C35 102.3(3) . . ?
C36 C37 C38 104.1(3) . . ?
O2 C38 C37 106.7(3) . . ?
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_geom_bond_publ_flag
Sr1 N1 2.474(3) . ?
Sr1 N1 2.474(3) 2_655 ?
Sr1 O1 2.507(2) . ?
Sr1 O1 2.507(2) 2_655 ?
Sr1 C1 2.941(3) . ?
Sr1 C1 2.941(3) 2_655 ?
N1 C1 1.397(4) . ?
N1 Si1 1.690(3) . ?
C1 C2 1.432(5) . ?
C1 C6 1.435(5) . ?
C2 C3 1.401(5) . ?
C2 C7 1.529(5) . ?
C3 C4 1.386(6) . ?
C4 C5 1.383(6) . ?
C5 C6 1.393(5) . ?
C6 C10 1.513(5) . ?
C7 C9 1.520(5) . ?
C7 C8 1.535(5) . ?
C10 C11 1.525(5) . ?
C10 C12 1.536(5) . ?
Si1 C14 1.874(4) . ?
Si1 C15 1.878(4) . ?
Si1 C13 1.879(4) . ?
O1 C19 1.455(4) . ?
O1 C16 1.458(4) . ?
C16 C17 1.516(5) . ?
C17 C18 1.512(5) . ?
C18 C19 1.514(5) . ?
Sr2 N2 2.485(3) 2_656 ?
Sr2 N2 2.485(3) . ?
Sr2 O2 2.514(2) . ?
Sr2 O2 2.515(2) 2_656 ?
Sr2 C20 2.928(3) 2_656 ?
Sr2 C20 2.928(3) . ?
N2 C20 1.407(4) . ?
N2 Si2 1.694(3) . ?
C20 C25 1.428(5) . ?
C20 C21 1.437(5) . ?
C21 C22 1.386(5) . ?
C21 C26 1.519(5) . ?
C22 C23 1.392(6) . ?
C23 C24 1.382(5) . ?
C24 C25 1.378(5) . ?
C25 C29 1.529(5) . ?
C26 C27 1.526(5) . ?
C26 C28 1.541(6) . ?
C29 C30 1.529(6) . ?
C29 C31 1.538(6) . ?
Si2 C33 1.870(4) . ?
Si2 C32 1.885(4) . ?
Si2 C34 1.885(4) . ?
O2 C38 1.445(4) . ?
O2 C35 1.450(4) . ?
C35 C36 1.511(6) . ?
C36 C37 1.512(5) . ?
C37 C38 1.534(5) . ?
