#------------------------------------------------------------------------------
#$Date: 2019-11-25 00:23:19 +0200 (Mon, 25 Nov 2019) $
#$Revision: 239760 $
#$URL: file:///home/coder/svn-repositories/cod/cif/4/35/01/4350142.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_4350142
loop_
_publ_author_name
'Zhao, Qiang'
'Liu, Shujuan'
'Shi, Mei'
'Wang, Chuanming'
'Yu, Mengxiao'
'Li, Lei'
'Li, Fuyou'
'Yi, Tao'
'Huang, Chunhui'
_publ_section_title
;
 Series of new cationic iridium(III) complexes with tunable emission
 wavelength and excited state properties: structures, theoretical
 calculations, and photophysical and electrochemical properties.
;
_journal_issue                   16
_journal_name_full               'Inorganic chemistry'
_journal_page_first              6152
_journal_page_last               6160
_journal_paper_doi               10.1021/ic052034j
_journal_volume                  45
_journal_year                    2006
_chemical_formula_sum            'C42 H28 Cl F0 Ir N4 O4 P0'
_chemical_formula_weight         880.33
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_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_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 106.64(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   31.645(6)
_cell_length_b                   10.500(2)
_cell_length_c                   20.926(4)
_cell_measurement_temperature    293(2)
_cell_volume                     6662(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0304
_diffrn_reflns_av_sigmaI/netI    0.0383
_diffrn_reflns_limit_h_max       33
_diffrn_reflns_limit_h_min       -37
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            14519
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    4.141
_exptl_absorpt_correction_T_max  0.8519
_exptl_absorpt_correction_T_min  0.7892
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.755
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             3472
_exptl_crystal_size_max          0.06
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.04
_refine_diff_density_max         1.429
_refine_diff_density_min         -1.221
_refine_diff_density_rms         0.096
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     466
_refine_ls_number_reflns         5872
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0319
_refine_ls_R_factor_gt           0.0264
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[σ²(Fo²)+(0.0401P)²+5.2123P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0710
_refine_ls_wR_factor_ref         0.0742
_reflns_number_gt                5103
_reflns_number_total             5872
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic052034jsi20060227_081221.cif
_cod_data_source_block           50825a
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               4350142
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
Ir1 Ir 0.876796(4) 0.740077(12) 0.921148(6) 0.02379(7) Uani 1 1 d . . .
N1 N 0.87381(9) 0.8620(3) 0.84364(15) 0.0273(6) Uani 1 1 d . . .
N2 N 0.87239(9) 0.6103(3) 0.99236(14) 0.0262(6) Uani 1 1 d . . .
N3 N 0.91791(9) 0.8687(3) 0.99187(14) 0.0285(7) Uani 1 1 d . . .
N4 N 0.94174(9) 0.6692(3) 0.92889(14) 0.0281(7) Uani 1 1 d . . .
C1 C 0.90698(12) 0.8728(4) 0.81410(18) 0.0321(8) Uani 1 1 d . . .
H1 H 0.9317 0.8209 0.8287 0.038 Uiso 1 1 calc R . .
C2 C 0.90501(13) 0.9565(4) 0.76445(19) 0.0372(9) Uani 1 1 d . . .
H2 H 0.9296 0.9697 0.7495 0.045 Uiso 1 1 calc R . .
C3 C 0.86559(13) 1.0240(3) 0.73508(19) 0.0338(8) Uani 1 1 d . . .
C4 C 0.86037(15) 1.1057(4) 0.6803(2) 0.0439(10) Uani 1 1 d . . .
H4 H 0.8847 1.1271 0.6660 0.053 Uiso 1 1 calc R . .
C5 C 0.82023(16) 1.1536(4) 0.6481(2) 0.0527(12) Uani 1 1 d . . .
H5 H 0.8174 1.2103 0.6130 0.063 Uiso 1 1 calc R . .
C6 C 0.78267(15) 1.1185(4) 0.6673(2) 0.0494(11) Uani 1 1 d . . .
H6 H 0.7549 1.1457 0.6423 0.059 Uiso 1 1 calc R . .
C7 C 0.78700(13) 1.0451(4) 0.7223(2) 0.0393(9) Uani 1 1 d . . .
H7 H 0.7621 1.0240 0.7352 0.047 Uiso 1 1 calc R . .
C8 C 0.82896(12) 1.0003(3) 0.76008(18) 0.0297(8) Uani 1 1 d . . .
C9 C 0.83630(12) 0.9298(3) 0.82052(19) 0.0285(8) Uani 1 1 d . . .
C10 C 0.80737(11) 0.9226(3) 0.86422(18) 0.0286(8) Uani 1 1 d . . .
C11 C 0.77382(12) 1.0088(4) 0.86368(19) 0.0379(9) Uani 1 1 d . . .
H11 H 0.7670 1.0725 0.8315 0.045 Uiso 1 1 calc R . .
C12 C 0.75060(13) 1.0013(4) 0.9101(2) 0.0418(10) Uani 1 1 d . . .
H12 H 0.7278 1.0580 0.9085 0.050 Uiso 1 1 calc R . .
C13 C 0.76149(12) 0.9090(4) 0.9589(2) 0.0392(10) Uani 1 1 d . . .
H13 H 0.7458 0.9031 0.9902 0.047 Uiso 1 1 calc R . .
C14 C 0.79578(12) 0.8248(4) 0.96154(18) 0.0332(8) Uani 1 1 d . . .
H14 H 0.8025 0.7627 0.9946 0.040 Uiso 1 1 calc R . .
C15 C 0.82029(11) 0.8307(3) 0.91601(17) 0.0272(8) Uani 1 1 d . . .
C16 C 0.88989(12) 0.6309(3) 1.05938(18) 0.0314(8) Uani 1 1 d . . .
H16 H 0.9028 0.7095 1.0735 0.038 Uiso 1 1 calc R . .
C17 C 0.88926(12) 0.5422(4) 1.10595(19) 0.0345(9) Uani 1 1 d . . .
H17 H 0.9039 0.5569 1.1506 0.041 Uiso 1 1 calc R . .
C18 C 0.86619(11) 0.4271(3) 1.08616(18) 0.0302(8) Uani 1 1 d . . .
C19 C 0.86318(13) 0.3335(4) 1.1329(2) 0.0394(9) Uani 1 1 d . . .
H19 H 0.8790 0.3432 1.1775 0.047 Uiso 1 1 calc R . .
C20 C 0.83743(16) 0.2294(4) 1.1133(2) 0.0465(11) Uani 1 1 d . . .
H20 H 0.8360 0.1674 1.1443 0.056 Uiso 1 1 calc R . .
C21 C 0.81304(16) 0.2152(4) 1.0466(2) 0.0459(11) Uani 1 1 d . . .
H21 H 0.7945 0.1453 1.0341 0.055 Uiso 1 1 calc R . .
C22 C 0.81593(13) 0.3017(4) 0.9997(2) 0.0389(9) Uani 1 1 d . . .
H22 H 0.7991 0.2909 0.9556 0.047 Uiso 1 1 calc R . .
C23 C 0.84455(11) 0.4088(3) 1.01753(18) 0.0287(8) Uani 1 1 d . . .
C24 C 0.85202(11) 0.4994(3) 0.97085(17) 0.0260(7) Uani 1 1 d . . .
C25 C 0.84148(11) 0.4845(3) 0.89794(18) 0.0282(8) Uani 1 1 d . . .
C26 C 0.83246(13) 0.3682(4) 0.86383(19) 0.0400(9) Uani 1 1 d . . .
H26 H 0.8305 0.2942 0.8873 0.048 Uiso 1 1 calc R . .
C27 C 0.82651(15) 0.3620(4) 0.7962(2) 0.0498(11) Uani 1 1 d . . .
H27 H 0.8209 0.2841 0.7742 0.060 Uiso 1 1 calc R . .
C28 C 0.82886(15) 0.4719(4) 0.7611(2) 0.0450(11) Uani 1 1 d . . .
H28 H 0.8236 0.4682 0.7151 0.054 Uiso 1 1 calc R . .
C29 C 0.83887(13) 0.5870(4) 0.79363(19) 0.0370(9) Uani 1 1 d . . .
H29 H 0.8403 0.6600 0.7691 0.044 Uiso 1 1 calc R . .
C30 C 0.84700(11) 0.5963(3) 0.86311(17) 0.0268(8) Uani 1 1 d . . .
C31 C 0.90548(13) 0.9664(3) 1.02276(19) 0.0364(9) Uani 1 1 d . . .
H31 H 0.8762 0.9923 1.0089 0.044 Uiso 1 1 calc R . .
C32 C 0.93478(15) 1.0312(4) 1.0751(2) 0.0444(10) Uani 1 1 d . . .
H32 H 0.9249 1.0985 1.0959 0.053 Uiso 1 1 calc R . .
C33 C 0.97755(15) 0.9957(4) 1.0954(2) 0.0456(10) Uani 1 1 d . . .
H33 H 0.9971 1.0374 1.1310 0.055 Uiso 1 1 calc R . .
C34 C 0.99252(12) 0.8960(4) 1.06288(19) 0.0359(9) Uani 1 1 d . . .
C35 C 1.03717(13) 0.8535(4) 1.0794(2) 0.0476(11) Uani 1 1 d . . .
H35 H 1.0582 0.8920 1.1146 0.057 Uiso 1 1 calc R . .
C36 C 1.04951(16) 0.7593(4) 1.0455(3) 0.0505(13) Uani 1 1 d . . .
H36 H 1.0790 0.7353 1.0569 0.061 Uiso 1 1 calc R . .
C37 C 1.01843(12) 0.6947(4) 0.9921(2) 0.0366(9) Uani 1 1 d . . .
C38 C 1.02906(13) 0.5958(4) 0.9543(2) 0.0422(10) Uani 1 1 d . . .
H38 H 1.0582 0.5700 0.9624 0.051 Uiso 1 1 calc R . .
C39 C 0.99701(14) 0.5377(4) 0.9059(2) 0.0419(10) Uani 1 1 d . . .
H39 H 1.0041 0.4733 0.8802 0.050 Uiso 1 1 calc R . .
C40 C 0.95351(13) 0.5753(3) 0.89510(19) 0.0333(8) Uani 1 1 d . . .
H40 H 0.9317 0.5330 0.8628 0.040 Uiso 1 1 calc R . .
C41 C 0.97395(13) 0.7307(3) 0.9762(2) 0.0279(8) Uani 1 1 d . . .
C42 C 0.96105(11) 0.8346(3) 1.01074(17) 0.0284(8) Uani 1 1 d . . .
Cl1 Cl 1.0000 0.70357(15) 0.7500 0.0432(3) Uani 1 2 d S . .
O1 O 0.96292(12) 0.6263(4) 0.7475(2) 0.0879(12) Uani 1 1 d . . .
O2 O 0.99165(19) 0.7789(4) 0.6924(3) 0.0982(15) Uani 1 1 d . . .
Cl2 Cl 1.0000 0.24057(16) 0.7500 0.0696(6) Uani 1 2 d S . .
O5 O 1.0092(5) 0.2959(12) 0.8112(6) 0.119(4) Uiso 0.50 1 d P A 1
O3 O 0.9595(5) 0.2773(12) 0.7681(7) 0.140(5) Uiso 0.50 1 d P A 1
O6 O 1.0323(4) 0.2792(11) 0.8086(6) 0.105(4) Uiso 0.50 1 d P A 2
O4 O 1.0000 0.1045(7) 0.7500 0.106(2) Uiso 1 2 d S A 2
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'
F F 0.0171 0.0103 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
P P 0.1023 0.0942 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Ir Ir -1.4442 7.9887 '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'
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
C30 Ir1 C15 93.89(14) . .
C30 Ir1 N1 94.82(13) . .
C15 Ir1 N1 79.76(12) . .
C30 Ir1 N2 79.71(13) . .
C15 Ir1 N2 96.28(13) . .
N1 Ir1 N2 173.08(11) . .
C30 Ir1 N3 169.37(13) . .
C15 Ir1 N3 95.37(12) . .
N1 Ir1 N3 91.96(11) . .
N2 Ir1 N3 94.06(11) . .
C30 Ir1 N4 93.38(13) . .
C15 Ir1 N4 171.81(12) . .
N1 Ir1 N4 95.88(11) . .
N2 Ir1 N4 88.72(11) . .
N3 Ir1 N4 77.76(11) . .
C9 N1 C1 120.3(3) . .
C9 N1 Ir1 116.8(2) . .
C1 N1 Ir1 122.9(2) . .
C24 N2 C16 119.6(3) . .
C24 N2 Ir1 117.2(2) . .
C16 N2 Ir1 123.1(2) . .
C31 N3 C42 118.4(3) . .
C31 N3 Ir1 128.0(3) . .
C42 N3 Ir1 113.3(2) . .
C40 N4 C41 118.2(3) . .
C40 N4 Ir1 128.7(3) . .
C41 N4 Ir1 113.0(2) . .
C2 C1 N1 122.1(4) . .
C1 C2 C3 120.2(4) . .
C4 C3 C2 123.0(4) . .
C4 C3 C8 119.3(4) . .
C2 C3 C8 117.5(3) . .
C5 C4 C3 120.6(4) . .
C4 C5 C6 120.6(4) . .
C7 C6 C5 120.0(4) . .
C6 C7 C8 120.8(4) . .
C7 C8 C3 117.9(3) . .
C7 C8 C9 123.8(3) . .
C3 C8 C9 118.3(3) . .
N1 C9 C8 119.7(3) . .
N1 C9 C10 113.0(3) . .
C8 C9 C10 127.3(3) . .
C11 C10 C15 120.0(3) . .
C11 C10 C9 124.8(3) . .
C15 C10 C9 114.5(3) . .
C12 C11 C10 121.1(4) . .
C11 C12 C13 119.5(4) . .
C12 C13 C14 120.3(4) . .
C13 C14 C15 121.8(4) . .
C14 C15 C10 117.2(3) . .
C14 C15 Ir1 127.3(3) . .
C10 C15 Ir1 114.9(2) . .
C17 C16 N2 123.0(3) . .
C16 C17 C18 119.4(3) . .
C19 C18 C17 121.7(3) . .
C19 C18 C23 120.0(3) . .
C17 C18 C23 118.3(3) . .
C20 C19 C18 120.5(4) . .
C19 C20 C21 120.1(4) . .
C22 C21 C20 121.2(4) . .
C21 C22 C23 120.4(4) . .
C18 C23 C22 117.4(3) . .
C18 C23 C24 118.4(3) . .
C22 C23 C24 124.2(3) . .
N2 C24 C23 120.3(3) . .
N2 C24 C25 112.5(3) . .
C23 C24 C25 127.1(3) . .
C26 C25 C30 119.8(3) . .
C26 C25 C24 124.9(3) . .
C30 C25 C24 114.8(3) . .
C27 C26 C25 120.9(4) . .
C26 C27 C28 119.7(4) . .
C29 C28 C27 120.7(4) . .
C28 C29 C30 121.3(4) . .
C29 C30 C25 117.4(3) . .
C29 C30 Ir1 126.6(3) . .
C25 C30 Ir1 114.8(2) . .
N3 C31 C32 122.4(4) . .
C33 C32 C31 119.7(4) . .
C32 C33 C34 120.0(4) . .
C33 C34 C42 117.2(4) . .
C33 C34 C35 124.3(4) . .
C42 C34 C35 118.5(4) . .
C36 C35 C34 121.4(4) . .
C35 C36 C37 121.6(4) . .
C41 C37 C38 116.8(4) . .
C41 C37 C36 118.5(4) . .
C38 C37 C36 124.7(4) . .
C39 C38 C37 120.3(4) . .
C38 C39 C40 119.2(4) . .
N4 C40 C39 122.8(4) . .
N4 C41 C37 122.4(3) . .
N4 C41 C42 117.8(3) . .
C37 C41 C42 119.8(4) . .
N3 C42 C34 122.3(3) . .
N3 C42 C41 117.6(3) . .
C34 C42 C41 120.1(3) . .
O2 Cl1 O2 111.3(5) 2_756 .
O2 Cl1 O1 107.8(3) 2_756 .
O2 Cl1 O1 110.0(3) . .
O2 Cl1 O1 110.0(3) 2_756 2_756
O2 Cl1 O1 107.8(3) . 2_756
O1 Cl1 O1 110.0(4) . 2_756
O5 Cl2 O5 129.4(11) . 2_756
O5 Cl2 O6 32.1(6) . .
O5 Cl2 O6 127.0(6) 2_756 .
O5 Cl2 O6 127.0(6) . 2_756
O5 Cl2 O6 32.1(6) 2_756 2_756
O6 Cl2 O6 146.6(10) . 2_756
O5 Cl2 O4 115.3(5) . .
O5 Cl2 O4 115.3(5) 2_756 .
O6 Cl2 O4 106.7(5) . .
O6 Cl2 O4 106.7(5) 2_756 .
O5 Cl2 O3 67.6(7) . .
O5 Cl2 O3 99.2(7) 2_756 .
O6 Cl2 O3 99.7(7) . .
O6 Cl2 O3 71.5(7) 2_756 .
O4 Cl2 O3 105.0(5) . .
O5 Cl2 O3 99.2(7) . 2_756
O5 Cl2 O3 67.6(7) 2_756 2_756
O6 Cl2 O3 71.5(7) . 2_756
O6 Cl2 O3 99.7(7) 2_756 2_756
O4 Cl2 O3 105.0(5) . 2_756
O3 Cl2 O3 150.0(10) . 2_756
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
Ir1 C30 1.997(4) .
Ir1 C15 2.001(4) .
Ir1 N1 2.047(3) .
Ir1 N2 2.053(3) .
Ir1 N3 2.146(3) .
Ir1 N4 2.148(3) .
N1 C9 1.350(4) .
N1 C1 1.367(4) .
N2 C24 1.344(4) .
N2 C16 1.369(4) .
N3 C31 1.330(4) .
N3 C42 1.356(4) .
N4 C40 1.327(4) .
N4 C41 1.363(5) .
C1 C2 1.348(5) .
C2 C3 1.414(5) .
C3 C4 1.402(5) .
C3 C8 1.424(5) .
C4 C5 1.353(6) .
C5 C6 1.408(6) .
C6 C7 1.359(6) .
C7 C8 1.418(5) .
C8 C9 1.426(5) .
C9 C10 1.469(5) .
C10 C11 1.393(5) .
C10 C15 1.421(5) .
C11 C12 1.378(5) .
C12 C13 1.378(6) .
C13 C14 1.388(5) .
C14 C15 1.392(5) .
C16 C17 1.352(5) .
C17 C18 1.411(5) .
C18 C19 1.409(5) .
C18 C23 1.416(5) .
C19 C20 1.354(6) .
C20 C21 1.395(7) .
C21 C22 1.361(6) .
C22 C23 1.425(5) .
C23 C24 1.431(5) .
C24 C25 1.474(5) .
C25 C26 1.403(5) .
C25 C30 1.419(5) .
C26 C27 1.374(6) .
C27 C28 1.382(6) .
C28 C29 1.379(6) .
C29 C30 1.406(5) .
C31 C32 1.392(6) .
C32 C33 1.349(6) .
C33 C34 1.403(6) .
C34 C42 1.406(5) .
C34 C35 1.427(6) .
C35 C36 1.340(6) .
C36 C37 1.430(6) .
C37 C41 1.402(5) .
C37 C38 1.404(6) .
C38 C39 1.356(6) .
C39 C40 1.387(5) .
C41 C42 1.431(5) .
Cl1 O2 1.403(4) 2_756
Cl1 O2 1.403(4) .
Cl1 O1 1.415(3) .
Cl1 O1 1.415(3) 2_756
Cl2 O5 1.360(12) .
Cl2 O5 1.360(12) 2_756
Cl2 O6 1.412(12) .
Cl2 O6 1.412(12) 2_756
Cl2 O4 1.429(7) .
Cl2 O3 1.488(14) .
Cl2 O3 1.488(14) 2_756
