# Electronic Supplementary Material (ESI) for Dalton Transactions.
# This journal is © The Royal Society of Chemistry 2016

####################################################################### 
# 
# 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_IndigoPMCpCrCl
_database_code_depnum_ccdc_archive 'CCDC 1493779'
_audit_update_record             
;
2016-07-15 deposited with the CCDC.
2016-10-03 downloaded from the CCDC.
;
_audit_creation_date             2016-01-23
_audit_creation_method           SHELXL-2013
_chemical_name_systematic        
(indigo-O,O)chloro(pentamethylcyclopentadienyl)chromium
_chemical_name_common            no
_chemical_melting_point          'not measured'
_chemical_formula_moiety         'C26 H25 Cl Cr N2 O2'
_chemical_formula_sum            'C26 H25 Cl Cr N2 O2'
_chemical_formula_weight         484.93

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'
Cr Cr 0.3209 0.6236 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Cl Cl 0.1484 0.1585 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'

_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_H-M_alt        'P 21/n'
_space_group_name_Hall           '-P 2yn'

_shelx_space_group_comment       
;
The symmetry employed for this shelxl refinement is uniquely defined
by the following loop, which should always be used as a source of
symmetry information in preference to the above space-group names.
They are only intended as comments.
;

loop_
_space_group_symop_operation_xyz
'x, y, z'
'-x+1/2, y+1/2, -z+1/2'
'-x, -y, -z'
'x-1/2, -y-1/2, z-1/2'

_cell_length_a                   11.7879(7)
_cell_length_b                   15.2593(16)
_cell_length_c                   12.5982(8)
_cell_angle_alpha                90
_cell_angle_beta                 94.897(7)
_cell_angle_gamma                90
_cell_volume                     2257.8(3)
_cell_formula_units_Z            4
_cell_measurement_temperature    150.0(2)
_cell_measurement_reflns_used    6459
_cell_measurement_theta_min      4.0410
_cell_measurement_theta_max      31.4830

_exptl_crystal_description       parallelepiped
_exptl_crystal_colour            black
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    ?
_exptl_crystal_density_diffrn    1.427
_exptl_crystal_F_000             1008
_exptl_transmission_factor_min   ?
_exptl_transmission_factor_max   ?
_exptl_crystal_size_max          0.380
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.100
_exptl_absorpt_coefficient_mu    0.651
_shelx_estimated_absorpt_T_min   0.790
_shelx_estimated_absorpt_T_max   0.938
_exptl_absorpt_correction_T_min  0.94320
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   
;
CrysAlisPro 1.171.38.41 (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;

_exptl_special_details           
;
 ?
;
_diffrn_ambient_temperature      150.0(2)
_diffrn_ambient_environment      N~2~
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_monochromator  graphite
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'Xcalibur, AtlasS2, Gemini'
_diffrn_detector                 'CCD plate'
_diffrn_detector_type            AtlasS2
_diffrn_detector_area_resol_mean 5.2283
_diffrn_measurement_method       w-scan
_diffrn_reflns_number            26768
_diffrn_reflns_av_unetI/netI     0.0624
_diffrn_reflns_av_R_equivalents  0.0495
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_theta_min         3.469
_diffrn_reflns_theta_max         32.695
_diffrn_reflns_theta_full        25.242
_diffrn_measured_fraction_theta_max 0.915
_diffrn_measured_fraction_theta_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.915
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.915
_diffrn_reflns_point_group_measured_fraction_full 0.997
_reflns_number_total             7588
_reflns_number_gt                4721
_reflns_threshold_expression     'I > 2σ(I)'
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_max     .
_reflns_Friedel_fraction_full    .

_reflns_special_details          
;
 Reflections were merged by SHELXL according to the crystal
 class for the calculation of statistics and refinement.
 
 _reflns_Friedel_fraction is defined as the number of unique
 Friedel pairs measured divided by the number that would be
 possible theoretically, ignoring centric projections and
 systematic absences.
;

_computing_data_collection       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_cell_refinement       'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.41 (Rigaku OD, 2015)'

_computing_structure_solution    'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_molecular_graphics    WinGx
_computing_publication_material  WinGx

_refine_special_details          
;
 ?
;
_refine_ls_structure_factor_coef Fsqd
_refine_ls_matrix_type           full
_refine_ls_weighting_scheme      calc
_refine_ls_weighting_details     
'w=1/[σ²(Fo²)+(0.0571P)²+1.3070P] 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         7588
_refine_ls_number_parameters     294
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1063
_refine_ls_R_factor_gt           0.0548
_refine_ls_wR_factor_ref         0.1442
_refine_ls_wR_factor_gt          0.1194
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_restrained_S_all      1.023
_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_site_symmetry_order
_atom_site_calc_flag
_atom_site_refinement_flags_posn
_atom_site_refinement_flags_adp
_atom_site_refinement_flags_occupancy
_atom_site_disorder_assembly
_atom_site_disorder_group
Cr Cr 0.80054(3) 0.81604(2) 0.11411(3) 0.02862(11) Uani 1 1 d . . . . .
Cl Cl 0.97498(5) 0.74404(4) 0.08243(6) 0.03992(17) Uani 1 1 d . . . . .
C1 C 0.6397(2) 0.73909(17) 0.0775(2) 0.0346(5) Uani 1 1 d . . . . .
C2 C 0.6176(2) 0.81522(16) 0.1402(2) 0.0358(6) Uani 1 1 d . . . . .
C3 C 0.6786(2) 0.80477(17) 0.2417(2) 0.0391(6) Uani 1 1 d . . . . .
C4 C 0.7423(2) 0.72570(18) 0.2407(2) 0.0373(6) Uani 1 1 d . . . . .
C5 C 0.7153(2) 0.68536(16) 0.1396(2) 0.0362(6) Uani 1 1 d . . . . .
C6 C 0.5909(3) 0.7217(2) -0.0349(2) 0.0545(8) Uani 1 1 d . . . . .
H6A H 0.6343 0.6749 -0.0659 0.082 Uiso 1 1 calc R U . . .
H6B H 0.5954 0.7751 -0.0774 0.082 Uiso 1 1 calc R U . . .
H6C H 0.5111 0.7037 -0.0344 0.082 Uiso 1 1 calc R U . . .
C7 C 0.5391(3) 0.8884(2) 0.1015(3) 0.0625(9) Uani 1 1 d . . . . .
H7A H 0.4599 0.8694 0.1034 0.094 Uiso 1 1 calc R U . . .
H7B H 0.5533 0.9039 0.0283 0.094 Uiso 1 1 calc R U . . .
H7C H 0.5530 0.9397 0.1477 0.094 Uiso 1 1 calc R U . . .
C8 C 0.6761(3) 0.8658(2) 0.3354(3) 0.0645(10) Uani 1 1 d . . . . .
H8A H 0.6378 0.9205 0.3123 0.097 Uiso 1 1 calc R U . . .
H8B H 0.7542 0.8787 0.3641 0.097 Uiso 1 1 calc R U . . .
H8C H 0.6347 0.8381 0.3906 0.097 Uiso 1 1 calc R U . . .
C9 C 0.8179(3) 0.6881(3) 0.3308(3) 0.0679(11) Uani 1 1 d . . . . .
H9A H 0.8433 0.7350 0.3804 0.102 Uiso 1 1 calc R U . . .
H9B H 0.8843 0.6605 0.3027 0.102 Uiso 1 1 calc R U . . .
H9C H 0.7757 0.6441 0.3682 0.102 Uiso 1 1 calc R U . . .
C10 C 0.7583(3) 0.59620(18) 0.1108(3) 0.0585(9) Uani 1 1 d . . . . .
H10A H 0.7215 0.5512 0.1516 0.088 Uiso 1 1 calc R U . . .
H10B H 0.8409 0.5936 0.1277 0.088 Uiso 1 1 calc R U . . .
H10C H 0.7404 0.5858 0.0345 0.088 Uiso 1 1 calc R U . . .
O1 O 0.77560(14) 0.87162(10) -0.02291(13) 0.0330(4) Uani 1 1 d . . . . .
O2 O 0.87790(15) 0.90925(11) 0.19145(14) 0.0369(4) Uani 1 1 d . . . . .
N1 N 0.82311(17) 1.09262(13) -0.09662(17) 0.0338(5) Uani 1 1 d . . . . .
H1 H 0.8526 1.1455 -0.0899 0.041 Uiso 1 1 calc R U . . .
N2 N 0.95810(17) 1.11875(13) 0.09997(17) 0.0328(5) Uani 1 1 d . . . . .
H2 H 0.9579 1.1636 0.0560 0.039 Uiso 1 1 calc R U . . .
C21 C 0.84004(19) 1.02498(14) -0.02054(19) 0.0297(5) Uani 1 1 d . . . . .
C22 C 0.90352(18) 1.03886(14) 0.0771(2) 0.0295(5) Uani 1 1 d . . . . .
C23 C 0.77821(19) 0.94983(15) -0.06305(19) 0.0291(5) Uani 1 1 d . . . . .
C24 C 0.72089(19) 0.97585(16) -0.1646(2) 0.0323(5) Uani 1 1 d . . . . .
C25 C 0.7532(2) 1.06356(16) -0.1834(2) 0.0332(5) Uani 1 1 d . . . . .
C26 C 0.91964(19) 0.98563(15) 0.17282(19) 0.0302(5) Uani 1 1 d . . . . .
C27 C 0.98935(19) 1.03661(15) 0.2496(2) 0.0306(5) Uani 1 1 d . . . . .
C28 C 1.01222(19) 1.11714(15) 0.2010(2) 0.0315(5) Uani 1 1 d . . . . .
C29 C 0.6466(2) 0.93233(18) -0.2407(2) 0.0383(6) Uani 1 1 d . . . . .
H29 H 0.6249 0.8732 -0.2302 0.046 Uiso 1 1 calc R U . . .
C30 C 0.6057(2) 0.9779(2) -0.3313(2) 0.0433(6) Uani 1 1 d . . . . .
H30 H 0.5546 0.9498 -0.3830 0.052 Uiso 1 1 calc R U . . .
C31 C 0.6387(2) 1.0646(2) -0.3478(2) 0.0462(7) Uani 1 1 d . . . . .
H31 H 0.6090 1.0943 -0.4104 0.055 Uiso 1 1 calc R U . . .
C32 C 0.7137(2) 1.10851(18) -0.2751(2) 0.0415(6) Uani 1 1 d . . . . .
H32 H 0.7370 1.1669 -0.2875 0.050 Uiso 1 1 calc R U . . .
C33 C 1.0364(2) 1.01847(17) 0.3533(2) 0.0363(6) Uani 1 1 d . . . . .
H33 H 1.0210 0.9647 0.3872 0.044 Uiso 1 1 calc R U . . .
C34 C 1.1058(2) 1.08104(18) 0.4050(2) 0.0426(6) Uani 1 1 d . . . . .
H34 H 1.1393 1.0696 0.4749 0.051 Uiso 1 1 calc R U . . .
C35 C 1.1277(2) 1.16204(18) 0.3552(2) 0.0419(6) Uani 1 1 d . . . . .
H35 H 1.1758 1.2040 0.3921 0.050 Uiso 1 1 calc R U . . .
C36 C 1.0803(2) 1.18049(17) 0.2542(2) 0.0408(6) Uani 1 1 d . . . . .
H36 H 1.0937 1.2352 0.2215 0.049 Uiso 1 1 calc R U . . .


_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
Cr O2 1.9110(18) . ?
Cr O1 1.9232(17) . ?
Cr C2 2.208(2) . ?
Cr C1 2.244(2) . ?
Cr C3 2.252(2) . ?
Cr C4 2.259(2) . ?
Cr C5 2.268(2) . ?
Cr Cl 2.3948(7) . ?
C1 C5 1.400(4) . ?
C1 C2 1.441(3) . ?
C1 C6 1.506(4) . ?
C2 C3 1.421(4) . ?
C2 C7 1.505(4) . ?
C3 C4 1.422(4) . ?
C3 C8 1.506(4) . ?
C4 C5 1.426(4) . ?
C4 C9 1.496(4) . ?
C5 C10 1.507(4) . ?
O1 C23 1.298(3) . ?
O2 C26 1.294(3) . ?
N1 C25 1.384(3) . ?
N1 C21 1.411(3) . ?
N2 C28 1.374(3) . ?
N2 C22 1.397(3) . ?
C21 C22 1.401(4) . ?
C21 C23 1.437(3) . ?
C22 C26 1.453(3) . ?
C23 C24 1.450(3) . ?
C24 C29 1.409(4) . ?
C24 C25 1.417(3) . ?
C25 C32 1.389(4) . ?
C26 C27 1.442(3) . ?
C27 C33 1.403(4) . ?
C27 C28 1.409(3) . ?
C28 C36 1.391(3) . ?
C29 C30 1.388(4) . ?
C30 C31 1.400(4) . ?
C31 C32 1.390(4) . ?
C33 C34 1.383(4) . ?
C34 C35 1.420(4) . ?
C35 C36 1.375(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
O2 Cr O1 99.16(7) . . ?
O2 Cr C2 110.97(9) . . ?
O1 Cr C2 93.43(9) . . ?
O2 Cr C1 148.44(8) . . ?
O1 Cr C1 89.12(8) . . ?
C2 Cr C1 37.75(9) . . ?
O2 Cr C3 89.94(8) . . ?
O1 Cr C3 128.03(9) . . ?
C2 Cr C3 37.13(10) . . ?
C1 Cr C3 61.78(9) . . ?
O2 Cr C4 104.76(9) . . ?
O1 Cr C4 150.52(8) . . ?
C2 Cr C4 62.11(9) . . ?
C1 Cr C4 61.54(9) . . ?
C3 Cr C4 36.75(10) . . ?
O2 Cr C5 141.27(9) . . ?
O1 Cr C5 118.63(9) . . ?
C2 Cr C5 61.58(9) . . ?
C1 Cr C5 36.14(10) . . ?
C3 Cr C5 60.95(9) . . ?
C4 Cr C5 36.73(10) . . ?
O2 Cr Cl 92.71(6) . . ?
O1 Cr Cl 96.91(5) . . ?
C2 Cr Cl 152.28(7) . . ?
C1 Cr Cl 116.62(7) . . ?
C3 Cr Cl 133.89(8) . . ?
C4 Cr Cl 98.89(7) . . ?
C5 Cr Cl 90.98(6) . . ?
C5 C1 C2 107.6(2) . . ?
C5 C1 C6 126.6(3) . . ?
C2 C1 C6 125.8(3) . . ?
C5 C1 Cr 72.86(14) . . ?
C2 C1 Cr 69.78(13) . . ?
C6 C1 Cr 122.27(17) . . ?
C3 C2 C1 107.5(2) . . ?
C3 C2 C7 128.6(3) . . ?
C1 C2 C7 123.8(3) . . ?
C3 C2 Cr 73.11(14) . . ?
C1 C2 Cr 72.47(13) . . ?
C7 C2 Cr 121.93(18) . . ?
C2 C3 C4 108.3(2) . . ?
C2 C3 C8 126.4(3) . . ?
C4 C3 C8 125.2(3) . . ?
C2 C3 Cr 69.76(13) . . ?
C4 C3 Cr 71.87(13) . . ?
C8 C3 Cr 124.63(18) . . ?
C3 C4 C5 107.2(2) . . ?
C3 C4 C9 126.9(3) . . ?
C5 C4 C9 125.8(3) . . ?
C3 C4 Cr 71.38(14) . . ?
C5 C4 Cr 71.99(14) . . ?
C9 C4 Cr 124.93(17) . . ?
C1 C5 C4 109.2(2) . . ?
C1 C5 C10 127.3(3) . . ?
C4 C5 C10 123.4(3) . . ?
C1 C5 Cr 71.00(13) . . ?
C4 C5 Cr 71.28(13) . . ?
C10 C5 Cr 126.71(16) . . ?
C23 O1 Cr 138.46(16) . . ?
C26 O2 Cr 138.59(17) . . ?
C25 N1 C21 110.0(2) . . ?
C28 N2 C22 110.1(2) . . ?
C22 C21 N1 121.3(2) . . ?
C22 C21 C23 131.6(2) . . ?
N1 C21 C23 107.0(2) . . ?
N2 C22 C21 121.0(2) . . ?
N2 C22 C26 107.0(2) . . ?
C21 C22 C26 131.8(2) . . ?
O1 C23 C21 128.1(2) . . ?
O1 C23 C24 124.8(2) . . ?
C21 C23 C24 107.1(2) . . ?
C29 C24 C25 119.5(2) . . ?
C29 C24 C23 133.4(2) . . ?
C25 C24 C23 107.1(2) . . ?
N1 C25 C32 129.3(2) . . ?
N1 C25 C24 108.7(2) . . ?
C32 C25 C24 122.0(3) . . ?
O2 C26 C27 124.6(2) . . ?
O2 C26 C22 129.0(2) . . ?
C27 C26 C22 106.36(19) . . ?
C33 C27 C28 120.1(2) . . ?
C33 C27 C26 132.5(2) . . ?
C28 C27 C26 107.3(2) . . ?
N2 C28 C36 129.5(2) . . ?
N2 C28 C27 109.1(2) . . ?
C36 C28 C27 121.4(2) . . ?
C30 C29 C24 118.4(3) . . ?
C29 C30 C31 120.9(3) . . ?
C32 C31 C30 121.8(3) . . ?
C25 C32 C31 117.4(3) . . ?
C34 C33 C27 118.2(2) . . ?
C33 C34 C35 121.0(3) . . ?
C36 C35 C34 120.8(3) . . ?
C35 C36 C28 118.4(2) . . ?

_refine_diff_density_max         0.534
_refine_diff_density_min         -0.462
_refine_diff_density_rms         0.080

_shelxl_version_number           2013-4


_chemical_compound_source        no
_chemical_properties_physical    ', Air-sensitive'
_exptl_crystal_preparation       ', optical absorption in NIR range'
