# Electronic Supplementary Material (ESI) for ChemComm.
# This journal is © The Royal Society of Chemistry 2015

####################################################################### 
# 
# This file contains crystal structure data downloaded from the 
# Cambridge Structural Database (CSD) hosted by the Cambridge 
# Crystallographic Data Centre (CCDC).
# 
# Full information about CCDC data access policies and citation 
# guidelines are available at http://www.ccdc.cam.ac.uk/access/V1 
# 
# Audit and citation data items may have been added by the CCDC. 
# Please retain this information to preserve the provenance of 
# this file and to allow appropriate attribution of the data. 
# 
#######################################################################

data_1
_database_code_depnum_ccdc_archive 'CCDC 1057925'
_audit_update_record             
;
2015-11-11 deposited with the CCDC.
2015-11-12 downloaded from the CCDC.
;

_audit_creation_method           SHELXL-97
_chemical_name_systematic        '[CrII(N(TMS)2)2(py)2]'
_chemical_name_common            ?
_chemical_melting_point          ?
_chemical_formula_moiety         ?
_chemical_formula_sum            'C22 H46 Cr N4 Si4'
_chemical_formula_weight         530.99

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'
N N 0.0061 0.0033 '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'
Cr Cr 0.3209 0.6236 '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'

_symmetry_cell_setting           triclinic
_symmetry_space_group_name_H-M   P-1

loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, -z'

_cell_length_a                   10.972(16)
_cell_length_b                   11.699(16)
_cell_length_c                   13.519(19)
_cell_angle_alpha                99.28(2)
_cell_angle_beta                 95.81(2)
_cell_angle_gamma                115.672(18)
_cell_volume                     1515(4)
_cell_formula_units_Z            2
_cell_measurement_temperature    296(2)
_cell_measurement_reflns_used    ?
_cell_measurement_theta_min      ?
_cell_measurement_theta_max      ?

_exptl_crystal_description       block
_exptl_crystal_colour            yellow
_exptl_crystal_size_max          0.8
_exptl_crystal_size_mid          0.5
_exptl_crystal_size_min          0.3
_exptl_crystal_density_meas      ?
_exptl_crystal_density_diffrn    1.164
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             572
_exptl_absorpt_coefficient_mu    0.552
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_correction_T_min  0.725
_exptl_absorpt_correction_T_max  0.847
_exptl_absorpt_process_details   ?

_exptl_special_details           
; 
 ? 
;

_diffrn_ambient_temperature      296(2)
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_type           MoK\a
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_monochromator  graphite
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_detector_area_resol_mean ?
_diffrn_standards_number         ?
_diffrn_standards_interval_count ?
_diffrn_standards_interval_time  ?
_diffrn_standards_decay_%        ?
_diffrn_reflns_number            16163
_diffrn_reflns_av_R_equivalents  0.0292
_diffrn_reflns_av_sigmaI/netI    0.0351
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_theta_min         1.56
_diffrn_reflns_theta_max         25.00
_reflns_number_total             5293
_reflns_number_gt                4011
_reflns_threshold_expression     >2sigma(I)

_computing_data_collection       'Bruker SMART'
_computing_cell_refinement       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_solution    'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'

_refine_special_details          
; 
 Refinement of F² against ALL reflections.  The weighted R-factor wR and 
 goodness of fit S are based on F², conventional R-factors R are based 
 on F, with F set to zero for negative F². The threshold expression of 
 F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is 
 not relevant to the choice of reflections for refinement.  R-factors based 
 on F² are statistically about twice as large as those based on F, and R- 
 factors based on ALL data will be even larger. 
;

_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'calc w=1/[σ²(Fo²)+(0.0432P)²+0.5224P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_atom_sites_solution_hydrogens   geom
_refine_ls_hydrogen_treatment    constr
_refine_ls_extinction_method     none
_refine_ls_extinction_coef       ?
_refine_ls_number_reflns         5293
_refine_ls_number_parameters     292
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0538
_refine_ls_R_factor_gt           0.0342
_refine_ls_wR_factor_ref         0.0922
_refine_ls_wR_factor_gt          0.0841
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_restrained_S_all      1.014
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000

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
Cr1 Cr 0.95756(4) 0.72098(3) 0.74428(3) 0.03264(11) Uani 1 1 d . . .
N1 N 0.76908(19) 0.58274(17) 0.75653(14) 0.0364(4) Uani 1 1 d . . .
N2 N 0.8713(2) 0.84680(19) 0.72540(15) 0.0408(5) Uani 1 1 d . . .
N3 N 1.14693(19) 0.85976(18) 0.73517(15) 0.0401(5) Uani 1 1 d . . .
N4 N 1.0398(2) 0.59232(19) 0.76384(15) 0.0405(5) Uani 1 1 d . . .
Si1 Si 0.70501(7) 0.60909(7) 0.86120(5) 0.04562(19) Uani 1 1 d . . .
Si2 Si 0.68375(8) 0.44698(7) 0.66301(6) 0.04818(19) Uani 1 1 d . . .
Si3 Si 1.27389(7) 0.92775(8) 0.83968(6) 0.0519(2) Uani 1 1 d . . .
Si4 Si 1.17074(8) 0.90439(7) 0.62374(6) 0.0488(2) Uani 1 1 d . . .
C1 C 0.5686(4) 0.6593(4) 0.8412(3) 0.0873(11) Uani 1 1 d . . .
H1A H 0.6038 0.7388 0.8179 0.131 Uiso 1 1 calc R . .
H1B H 0.5385 0.6729 0.9044 0.131 Uiso 1 1 calc R . .
H1C H 0.4921 0.5924 0.7910 0.131 Uiso 1 1 calc R . .
C2 C 0.8396(3) 0.7420(3) 0.9640(2) 0.0638(8) Uani 1 1 d . . .
H2A H 0.9151 0.7228 0.9789 0.096 Uiso 1 1 calc R . .
H2B H 0.8016 0.7498 1.0242 0.096 Uiso 1 1 calc R . .
H2C H 0.8717 0.8225 0.9421 0.096 Uiso 1 1 calc R . .
C3 C 0.6365(4) 0.4670(3) 0.9198(3) 0.0830(11) Uani 1 1 d . . .
H3A H 0.5564 0.3974 0.8744 0.124 Uiso 1 1 calc R . .
H3B H 0.6119 0.4911 0.9832 0.124 Uiso 1 1 calc R . .
H3C H 0.7055 0.4386 0.9323 0.124 Uiso 1 1 calc R . .
C4 C 0.4974(3) 0.3984(4) 0.6277(3) 0.0929(12) Uani 1 1 d . . .
H4A H 0.4551 0.3814 0.6860 0.139 Uiso 1 1 calc R . .
H4B H 0.4547 0.3212 0.5736 0.139 Uiso 1 1 calc R . .
H4C H 0.4859 0.4675 0.6053 0.139 Uiso 1 1 calc R . .
C5 C 0.7514(4) 0.4685(3) 0.5435(2) 0.0712(9) Uani 1 1 d . . .
H5A H 0.7408 0.5378 0.5208 0.107 Uiso 1 1 calc R . .
H5B H 0.7013 0.3892 0.4919 0.107 Uiso 1 1 calc R . .
H5C H 0.8473 0.4895 0.5560 0.107 Uiso 1 1 calc R . .
C6 C 0.6941(4) 0.3015(3) 0.6904(3) 0.0813(10) Uani 1 1 d . . .
H6A H 0.7874 0.3149 0.6953 0.122 Uiso 1 1 calc R . .
H6B H 0.6353 0.2270 0.6364 0.122 Uiso 1 1 calc R . .
H6C H 0.6648 0.2869 0.7538 0.122 Uiso 1 1 calc R . .
C7 C 0.7555(3) 0.8082(3) 0.6610(2) 0.0536(7) Uani 1 1 d . . .
H7 H 0.7130 0.7233 0.6216 0.064 Uiso 1 1 calc R . .
C8 C 0.6952(3) 0.8850(3) 0.6489(3) 0.0702(9) Uani 1 1 d . . .
H8 H 0.6144 0.8545 0.6011 0.084 Uiso 1 1 calc R . .
C9 C 0.7538(4) 1.0062(4) 0.7072(3) 0.0773(10) Uani 1 1 d . . .
H9 H 0.7138 1.0610 0.7009 0.093 Uiso 1 1 calc R . .
C10 C 0.8714(4) 1.0479(3) 0.7750(3) 0.0741(9) Uani 1 1 d . . .
H10 H 0.9127 1.1312 0.8171 0.089 Uiso 1 1 calc R . .
C11 C 0.9284(3) 0.9665(3) 0.7810(2) 0.0556(7) Uani 1 1 d . . .
H11 H 1.0113 0.9966 0.8262 0.067 Uiso 1 1 calc R . .
C12 C 1.1212(3) 0.5730(3) 0.7055(2) 0.0497(6) Uani 1 1 d . . .
H12 H 1.1439 0.6193 0.6547 0.060 Uiso 1 1 calc R . .
C13 C 1.1732(3) 0.4892(3) 0.7158(2) 0.0643(8) Uani 1 1 d . . .
H13 H 1.2275 0.4757 0.6713 0.077 Uiso 1 1 calc R . .
C14 C 1.1455(4) 0.4256(3) 0.7910(3) 0.0766(10) Uani 1 1 d . . .
H14 H 1.1824 0.3693 0.8008 0.092 Uiso 1 1 calc R . .
C15 C 1.0632(4) 0.4446(4) 0.8524(3) 0.0785(10) Uani 1 1 d . . .
H15 H 1.0423 0.4014 0.9051 0.094 Uiso 1 1 calc R . .
C16 C 1.0119(3) 0.5269(3) 0.8362(2) 0.0587(7) Uani 1 1 d . . .
H16 H 0.9538 0.5382 0.8780 0.070 Uiso 1 1 calc R . .
C17 C 1.2064(4) 0.9002(4) 0.9577(2) 0.0880(11) Uani 1 1 d . . .
H17A H 1.1402 0.9329 0.9635 0.132 Uiso 1 1 calc R . .
H17B H 1.2808 0.9448 1.0156 0.132 Uiso 1 1 calc R . .
H17C H 1.1629 0.8085 0.9555 0.132 Uiso 1 1 calc R . .
C18 C 1.3732(4) 1.1067(3) 0.8607(3) 0.0900(11) Uani 1 1 d . . .
H18A H 1.4160 1.1280 0.8032 0.135 Uiso 1 1 calc R . .
H18B H 1.4428 1.1397 0.9214 0.135 Uiso 1 1 calc R . .
H18C H 1.3122 1.1453 0.8684 0.135 Uiso 1 1 calc R . .
C19 C 1.4009(4) 0.8652(4) 0.8391(3) 0.1038(14) Uani 1 1 d . . .
H19A H 1.3567 0.7745 0.8400 0.156 Uiso 1 1 calc R . .
H19B H 1.4728 0.9125 0.8984 0.156 Uiso 1 1 calc R . .
H19C H 1.4396 0.8759 0.7787 0.156 Uiso 1 1 calc R . .
C20 C 1.1605(4) 1.0565(3) 0.6170(3) 0.0793(10) Uani 1 1 d . . .
H20A H 1.0698 1.0451 0.6235 0.119 Uiso 1 1 calc R . .
H20B H 1.1792 1.0775 0.5526 0.119 Uiso 1 1 calc R . .
H20C H 1.2272 1.1261 0.6715 0.119 Uiso 1 1 calc R . .
C21 C 1.3398(3) 0.9288(4) 0.5909(3) 0.0794(10) Uani 1 1 d . . .
H21A H 1.4129 1.0000 0.6407 0.119 Uiso 1 1 calc R . .
H21B H 1.3443 0.9482 0.5246 0.119 Uiso 1 1 calc R . .
H21C H 1.3492 0.8509 0.5903 0.119 Uiso 1 1 calc R . .
C22 C 1.0396(3) 0.7781(3) 0.5151(2) 0.0685(8) Uani 1 1 d . . .
H22A H 1.0438 0.6974 0.5122 0.103 Uiso 1 1 calc R . .
H22B H 1.0575 0.8053 0.4525 0.103 Uiso 1 1 calc R . .
H22C H 0.9496 0.7663 0.5242 0.103 Uiso 1 1 calc R . .


_geom_special_details            
; 
 All esds (except the esd in the dihedral angle between two l.s. planes) 
 are estimated using the full covariance matrix.  The cell esds are taken 
 into account individually in the estimation of esds in distances, angles 
 and torsion angles; correlations between esds in cell parameters are only 
 used when they are defined by crystal symmetry.  An approximate (isotropic) 
 treatment of cell esds is used for estimating esds involving l.s. planes. 
;

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
Cr1 N3 2.040(3) . ?
Cr1 N1 2.044(3) . ?
Cr1 N4 2.099(3) . ?
Cr1 N2 2.099(3) . ?
N1 Si2 1.680(3) . ?
N1 Si1 1.685(3) . ?
N2 C11 1.313(4) . ?
N2 C7 1.315(4) . ?
N3 Si4 1.681(3) . ?
N3 Si3 1.688(3) . ?
N4 C12 1.316(3) . ?
N4 C16 1.318(3) . ?
Si1 C1 1.841(4) . ?
Si1 C3 1.849(4) . ?
Si1 C2 1.851(3) . ?
Si2 C6 1.846(4) . ?
Si2 C5 1.854(4) . ?
Si2 C4 1.855(4) . ?
Si3 C19 1.833(4) . ?
Si3 C17 1.843(4) . ?
Si3 C18 1.849(4) . ?
Si4 C20 1.847(4) . ?
Si4 C22 1.855(3) . ?
Si4 C21 1.862(4) . ?
C1 H1A 0.9600 . ?
C1 H1B 0.9600 . ?
C1 H1C 0.9600 . ?
C2 H2A 0.9600 . ?
C2 H2B 0.9600 . ?
C2 H2C 0.9600 . ?
C3 H3A 0.9600 . ?
C3 H3B 0.9600 . ?
C3 H3C 0.9600 . ?
C4 H4A 0.9600 . ?
C4 H4B 0.9600 . ?
C4 H4C 0.9600 . ?
C5 H5A 0.9600 . ?
C5 H5B 0.9600 . ?
C5 H5C 0.9600 . ?
C6 H6A 0.9600 . ?
C6 H6B 0.9600 . ?
C6 H6C 0.9600 . ?
C7 C8 1.346(4) . ?
C7 H7 0.9300 . ?
C8 C9 1.338(5) . ?
C8 H8 0.9300 . ?
C9 C10 1.347(5) . ?
C9 H9 0.9300 . ?
C10 C11 1.355(4) . ?
C10 H10 0.9300 . ?
C11 H11 0.9300 . ?
C12 C13 1.349(4) . ?
C12 H12 0.9300 . ?
C13 C14 1.337(5) . ?
C13 H13 0.9300 . ?
C14 C15 1.350(5) . ?
C14 H14 0.9300 . ?
C15 C16 1.343(4) . ?
C15 H15 0.9300 . ?
C16 H16 0.9300 . ?
C17 H17A 0.9600 . ?
C17 H17B 0.9600 . ?
C17 H17C 0.9600 . ?
C18 H18A 0.9600 . ?
C18 H18B 0.9600 . ?
C18 H18C 0.9600 . ?
C19 H19A 0.9600 . ?
C19 H19B 0.9600 . ?
C19 H19C 0.9600 . ?
C20 H20A 0.9600 . ?
C20 H20B 0.9600 . ?
C20 H20C 0.9600 . ?
C21 H21A 0.9600 . ?
C21 H21B 0.9600 . ?
C21 H21C 0.9600 . ?
C22 H22A 0.9600 . ?
C22 H22B 0.9600 . ?
C22 H22C 0.9600 . ?

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
N3 Cr1 N1 178.85(8) . . ?
N3 Cr1 N4 90.33(14) . . ?
N1 Cr1 N4 89.40(14) . . ?
N3 Cr1 N2 90.90(14) . . ?
N1 Cr1 N2 89.37(14) . . ?
N4 Cr1 N2 178.76(8) . . ?
Si2 N1 Si1 122.23(13) . . ?
Si2 N1 Cr1 119.30(12) . . ?
Si1 N1 Cr1 118.47(12) . . ?
C11 N2 C7 117.1(2) . . ?
C11 N2 Cr1 121.0(2) . . ?
C7 N2 Cr1 121.88(19) . . ?
Si4 N3 Si3 122.04(14) . . ?
Si4 N3 Cr1 118.71(11) . . ?
Si3 N3 Cr1 119.24(13) . . ?
C12 N4 C16 116.8(2) . . ?
C12 N4 Cr1 122.26(18) . . ?
C16 N4 Cr1 120.97(18) . . ?
N1 Si1 C1 114.87(15) . . ?
N1 Si1 C3 113.36(15) . . ?
C1 Si1 C3 107.1(2) . . ?
N1 Si1 C2 111.58(15) . . ?
C1 Si1 C2 104.47(19) . . ?
C3 Si1 C2 104.62(18) . . ?
N1 Si2 C6 115.07(16) . . ?
N1 Si2 C5 111.48(15) . . ?
C6 Si2 C5 104.80(16) . . ?
N1 Si2 C4 113.41(14) . . ?
C6 Si2 C4 105.86(19) . . ?
C5 Si2 C4 105.39(18) . . ?
N3 Si3 C19 114.42(16) . . ?
N3 Si3 C17 112.00(17) . . ?
C19 Si3 C17 105.2(2) . . ?
N3 Si3 C18 113.34(15) . . ?
C19 Si3 C18 106.1(2) . . ?
C17 Si3 C18 105.01(18) . . ?
N3 Si4 C20 114.47(13) . . ?
N3 Si4 C22 111.50(15) . . ?
C20 Si4 C22 105.68(18) . . ?
N3 Si4 C21 113.60(14) . . ?
C20 Si4 C21 105.71(17) . . ?
C22 Si4 C21 105.11(17) . . ?
Si1 C1 H1A 109.5 . . ?
Si1 C1 H1B 109.5 . . ?
H1A C1 H1B 109.5 . . ?
Si1 C1 H1C 109.5 . . ?
H1A C1 H1C 109.5 . . ?
H1B C1 H1C 109.5 . . ?
Si1 C2 H2A 109.5 . . ?
Si1 C2 H2B 109.5 . . ?
H2A C2 H2B 109.5 . . ?
Si1 C2 H2C 109.5 . . ?
H2A C2 H2C 109.5 . . ?
H2B C2 H2C 109.5 . . ?
Si1 C3 H3A 109.5 . . ?
Si1 C3 H3B 109.5 . . ?
H3A C3 H3B 109.5 . . ?
Si1 C3 H3C 109.5 . . ?
H3A C3 H3C 109.5 . . ?
H3B C3 H3C 109.5 . . ?
Si2 C4 H4A 109.5 . . ?
Si2 C4 H4B 109.5 . . ?
H4A C4 H4B 109.5 . . ?
Si2 C4 H4C 109.5 . . ?
H4A C4 H4C 109.5 . . ?
H4B C4 H4C 109.5 . . ?
Si2 C5 H5A 109.5 . . ?
Si2 C5 H5B 109.5 . . ?
H5A C5 H5B 109.5 . . ?
Si2 C5 H5C 109.5 . . ?
H5A C5 H5C 109.5 . . ?
H5B C5 H5C 109.5 . . ?
Si2 C6 H6A 109.5 . . ?
Si2 C6 H6B 109.5 . . ?
H6A C6 H6B 109.5 . . ?
Si2 C6 H6C 109.5 . . ?
H6A C6 H6C 109.5 . . ?
H6B C6 H6C 109.5 . . ?
N2 C7 C8 123.5(3) . . ?
N2 C7 H7 118.2 . . ?
C8 C7 H7 118.2 . . ?
C9 C8 C7 118.6(3) . . ?
C9 C8 H8 120.7 . . ?
C7 C8 H8 120.7 . . ?
C8 C9 C10 119.3(3) . . ?
C8 C9 H9 120.3 . . ?
C10 C9 H9 120.3 . . ?
C9 C10 C11 118.9(3) . . ?
C9 C10 H10 120.5 . . ?
C11 C10 H10 120.5 . . ?
N2 C11 C10 122.5(3) . . ?
N2 C11 H11 118.7 . . ?
C10 C11 H11 118.7 . . ?
N4 C12 C13 123.1(3) . . ?
N4 C12 H12 118.4 . . ?
C13 C12 H12 118.4 . . ?
C14 C13 C12 119.0(3) . . ?
C14 C13 H13 120.5 . . ?
C12 C13 H13 120.5 . . ?
C13 C14 C15 119.0(3) . . ?
C13 C14 H14 120.5 . . ?
C15 C14 H14 120.5 . . ?
C16 C15 C14 119.0(3) . . ?
C16 C15 H15 120.5 . . ?
C14 C15 H15 120.5 . . ?
N4 C16 C15 123.2(3) . . ?
N4 C16 H16 118.4 . . ?
C15 C16 H16 118.4 . . ?
Si3 C17 H17A 109.5 . . ?
Si3 C17 H17B 109.5 . . ?
H17A C17 H17B 109.5 . . ?
Si3 C17 H17C 109.5 . . ?
H17A C17 H17C 109.5 . . ?
H17B C17 H17C 109.5 . . ?
Si3 C18 H18A 109.5 . . ?
Si3 C18 H18B 109.5 . . ?
H18A C18 H18B 109.5 . . ?
Si3 C18 H18C 109.5 . . ?
H18A C18 H18C 109.5 . . ?
H18B C18 H18C 109.5 . . ?
Si3 C19 H19A 109.5 . . ?
Si3 C19 H19B 109.5 . . ?
H19A C19 H19B 109.5 . . ?
Si3 C19 H19C 109.5 . . ?
H19A C19 H19C 109.5 . . ?
H19B C19 H19C 109.5 . . ?
Si4 C20 H20A 109.5 . . ?
Si4 C20 H20B 109.5 . . ?
H20A C20 H20B 109.5 . . ?
Si4 C20 H20C 109.5 . . ?
H20A C20 H20C 109.5 . . ?
H20B C20 H20C 109.5 . . ?
Si4 C21 H21A 109.5 . . ?
Si4 C21 H21B 109.5 . . ?
H21A C21 H21B 109.5 . . ?
Si4 C21 H21C 109.5 . . ?
H21A C21 H21C 109.5 . . ?
H21B C21 H21C 109.5 . . ?
Si4 C22 H22A 109.5 . . ?
Si4 C22 H22B 109.5 . . ?
H22A C22 H22B 109.5 . . ?
Si4 C22 H22C 109.5 . . ?
H22A C22 H22C 109.5 . . ?
H22B C22 H22C 109.5 . . ?

loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
N3 Cr1 N1 Si2 -145(4) . . . . ?
N4 Cr1 N1 Si2 -68.94(14) . . . . ?
N2 Cr1 N1 Si2 111.21(14) . . . . ?
N3 Cr1 N1 Si1 34(4) . . . . ?
N4 Cr1 N1 Si1 110.74(14) . . . . ?
N2 Cr1 N1 Si1 -69.12(14) . . . . ?
N3 Cr1 N2 C11 -49.7(2) . . . . ?
N1 Cr1 N2 C11 129.1(2) . . . . ?
N4 Cr1 N2 C11 122(4) . . . . ?
N3 Cr1 N2 C7 133.1(2) . . . . ?
N1 Cr1 N2 C7 -48.0(2) . . . . ?
N4 Cr1 N2 C7 -55(4) . . . . ?
N1 Cr1 N3 Si4 -170(4) . . . . ?
N4 Cr1 N3 Si4 113.41(12) . . . . ?
N2 Cr1 N3 Si4 -66.76(12) . . . . ?
N1 Cr1 N3 Si3 9(4) . . . . ?
N4 Cr1 N3 Si3 -67.49(12) . . . . ?
N2 Cr1 N3 Si3 112.34(12) . . . . ?
N3 Cr1 N4 C12 -47.0(2) . . . . ?
N1 Cr1 N4 C12 134.1(2) . . . . ?
N2 Cr1 N4 C12 141(4) . . . . ?
N3 Cr1 N4 C16 132.9(2) . . . . ?
N1 Cr1 N4 C16 -46.0(2) . . . . ?
N2 Cr1 N4 C16 -39(4) . . . . ?
Si2 N1 Si1 C1 -76.7(2) . . . . ?
Cr1 N1 Si1 C1 103.6(2) . . . . ?
Si2 N1 Si1 C3 46.8(2) . . . . ?
Cr1 N1 Si1 C3 -132.84(17) . . . . ?
Si2 N1 Si1 C2 164.63(14) . . . . ?
Cr1 N1 Si1 C2 -15.03(17) . . . . ?
Si1 N1 Si2 C6 -78.6(2) . . . . ?
Cr1 N1 Si2 C6 101.02(19) . . . . ?
Si1 N1 Si2 C5 162.20(15) . . . . ?
Cr1 N1 Si2 C5 -18.14(17) . . . . ?
Si1 N1 Si2 C4 43.4(2) . . . . ?
Cr1 N1 Si2 C4 -136.90(18) . . . . ?
Si4 N3 Si3 C19 -78.5(2) . . . . ?
Cr1 N3 Si3 C19 102.4(2) . . . . ?
Si4 N3 Si3 C17 161.84(17) . . . . ?
Cr1 N3 Si3 C17 -17.2(2) . . . . ?
Si4 N3 Si3 C18 43.3(2) . . . . ?
Cr1 N3 Si3 C18 -135.81(16) . . . . ?
Si3 N3 Si4 C20 -80.1(2) . . . . ?
Cr1 N3 Si4 C20 99.01(19) . . . . ?
Si3 N3 Si4 C22 160.06(15) . . . . ?
Cr1 N3 Si4 C22 -20.88(17) . . . . ?
Si3 N3 Si4 C21 41.5(2) . . . . ?
Cr1 N3 Si4 C21 -139.43(17) . . . . ?
C11 N2 C7 C8 0.8(4) . . . . ?
Cr1 N2 C7 C8 178.1(2) . . . . ?
N2 C7 C8 C9 -1.7(5) . . . . ?
C7 C8 C9 C10 0.6(5) . . . . ?
C8 C9 C10 C11 1.2(5) . . . . ?
C7 N2 C11 C10 1.2(4) . . . . ?
Cr1 N2 C11 C10 -176.1(2) . . . . ?
C9 C10 C11 N2 -2.2(5) . . . . ?
C16 N4 C12 C13 1.2(4) . . . . ?
Cr1 N4 C12 C13 -178.9(2) . . . . ?
N4 C12 C13 C14 -2.5(5) . . . . ?
C12 C13 C14 C15 1.9(5) . . . . ?
C13 C14 C15 C16 -0.1(6) . . . . ?
C12 N4 C16 C15 0.6(4) . . . . ?
Cr1 N4 C16 C15 -179.2(3) . . . . ?
C14 C15 C16 N4 -1.2(5) . . . . ?

_diffrn_measured_fraction_theta_max 0.993
_diffrn_reflns_theta_full        25.00
_diffrn_measured_fraction_theta_full 0.993
_refine_diff_density_max         0.220
_refine_diff_density_min         -0.233
_refine_diff_density_rms         0.044
_chemical_properties_physical    Air-sensitive
