#------------------------------------------------------------------------------
#$Date: 2016-02-14 16:26:36 +0200 (Sun, 14 Feb 2016) $
#$Revision: 176435 $
#$URL: svn://www.crystallography.net/cod/cif/1/51/94/1519471.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_1519471
loop_
_publ_author_name
'Bell, Norman A.'
'Coles, Simon J.'
'Hursthouse, Michael B.'
_publ_section_title
;
 C27H33Cl2O9PZn
;
_journal_name_full               'Crystal Structure Report Archive'
_journal_page_first              882
_journal_year                    2002
_chemical_formula_sum            'C28 H34 Cl2 O9.5 P Zn0.5'
_chemical_formula_weight         657.11
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 118.3970(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   30.1313(4)
_cell_length_b                   9.8927(2)
_cell_length_c                   23.0654(5)
_cell_measurement_reflns_used    11490
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     6048.0(2)
_computing_cell_refinement       'DENZO and COLLECT'
_computing_data_collection
;
'DENZO (Otwinowski and Minor, 1997) & COLLECT (Hooft, 1998) '
;
_computing_data_reduction        'DENZO and COLLECT'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Enraf Nonius KappaCCD area detector'
_diffrn_measurement_method       'ω and φ scans to fill Ewald sphere'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enraf Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0469
_diffrn_reflns_av_sigmaI/netI    0.0502
_diffrn_reflns_limit_h_max       39
_diffrn_reflns_limit_h_min       -34
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            21192
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    0.707
_exptl_absorpt_correction_T_max  0.8952
_exptl_absorpt_correction_T_min  0.8486
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SORTAV (Blessing, R.H.; 1995, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.443
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2736
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.16
_refine_diff_density_max         1.228
_refine_diff_density_min         -1.071
_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     397
_refine_ls_number_reflns         6841
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0600
_refine_ls_R_factor_gt           0.0428
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[σ²(Fo²)+(0.0572P)²+7.4818P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1040
_refine_ls_wR_factor_ref         0.1127
_reflns_number_gt                5450
_reflns_number_total             6841
_reflns_threshold_expression     >2σ(I)
_cod_data_source_file            eCrystal-882.cif
_cod_data_source_block           s92
_cod_depositor_comments
;
Citation :
Bell, Norman A. and Coles, Simon J. and Hursthouse, Michael B. (2002) 
University of Southampton, Crystal Structure Report Archive. 
(doi:10.5258/ecrystals/882)

More at:
http://ecrystals.chem.soton.ac.uk/882/

The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' 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 3105 2015-03-04 15:46:00Z robertas 
;
_cod_original_sg_symbol_H-M      C2/C
_cod_original_formula_sum        'C28 H34 Cl2 O9.50 P Zn0.50'
_cod_database_code               1519471
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
C50 C 0.02410(13) 0.9228(4) 0.7805(2) 0.0639(11) Uani 1 1 d D . .
O21 O 0.0286(2) 0.8656(6) 0.8374(3) 0.0246(14) Uani 0.25 1 d P . .
O22 O 0.0311(4) 1.0042(10) 0.8337(4) 0.086(4) Uani 0.25 1 d PD . .
C1 C 0.18824(8) 0.1453(2) 0.21076(10) 0.0159(4) Uani 1 1 d . . .
C2 C 0.14934(8) 0.0575(2) 0.20137(11) 0.0167(4) Uani 1 1 d . . .
C3 C 0.15066(8) -0.0213(2) 0.25240(11) 0.0188(5) Uani 1 1 d . . .
H3 H 0.1237 -0.0800 0.2455 0.023 Uiso 1 1 calc R . .
C4 C 0.19326(9) -0.0099(2) 0.31380(11) 0.0195(5) Uani 1 1 d . . .
C5 C 0.23295(9) 0.0768(2) 0.32505(11) 0.0203(5) Uani 1 1 d . . .
H5 H 0.2615 0.0825 0.3676 0.024 Uiso 1 1 calc R . .
C6 C 0.23030(8) 0.1546(2) 0.27357(11) 0.0175(4) Uani 1 1 d . . .
C7 C 0.06821(9) -0.0280(2) 0.12282(12) 0.0252(5) Uani 1 1 d . . .
H7A H 0.0787 -0.1220 0.1352 0.038 Uiso 1 1 calc R . .
H7B H 0.0450 -0.0230 0.0754 0.038 Uiso 1 1 calc R . .
H7C H 0.0512 0.0050 0.1472 0.038 Uiso 1 1 calc R . .
C9 C 0.31438(9) 0.2362(2) 0.33880(12) 0.0253(5) Uani 1 1 d . . .
H9A H 0.3101 0.2620 0.3768 0.038 Uiso 1 1 calc R . .
H9B H 0.3384 0.2976 0.3352 0.038 Uiso 1 1 calc R . .
H9C H 0.3272 0.1434 0.3446 0.038 Uiso 1 1 calc R . .
C10 C 0.18066(8) 0.1114(2) 0.08161(10) 0.0163(4) Uani 1 1 d . . .
C11 C 0.22450(8) 0.0344(2) 0.09901(10) 0.0171(4) Uani 1 1 d . . .
C12 C 0.22632(8) -0.0626(2) 0.05708(11) 0.0188(5) Uani 1 1 d . . .
H12 H 0.2559 -0.1150 0.0695 0.023 Uiso 1 1 calc R . .
C13 C 0.18356(9) -0.0818(2) -0.00412(11) 0.0197(5) Uani 1 1 d . . .
C14 C 0.13959(8) -0.0076(2) -0.02293(11) 0.0196(5) Uani 1 1 d . . .
H14 H 0.1109 -0.0222 -0.0646 0.023 Uiso 1 1 calc R . .
C15 C 0.13831(8) 0.0887(2) 0.02050(11) 0.0178(4) Uani 1 1 d . . .
C16 C 0.30793(9) -0.0147(2) 0.18465(12) 0.0246(5) Uani 1 1 d . . .
H16A H 0.2994 -0.1102 0.1852 0.037 Uiso 1 1 calc R . .
H16B H 0.3313 0.0147 0.2296 0.037 Uiso 1 1 calc R . .
H16C H 0.3239 -0.0032 0.1565 0.037 Uiso 1 1 calc R . .
C17 C 0.14593(10) -0.2050(3) -0.10486(12) 0.0291(6) Uani 1 1 d . . .
H17A H 0.1177 -0.2371 -0.0987 0.044 Uiso 1 1 calc R . .
H17B H 0.1547 -0.2739 -0.1282 0.044 Uiso 1 1 calc R . .
H17C H 0.1362 -0.1214 -0.1308 0.044 Uiso 1 1 calc R . .
C18 C 0.05798(9) 0.1745(3) -0.06012(12) 0.0280(5) Uani 1 1 d . . .
H18A H 0.0727 0.2052 -0.0876 0.042 Uiso 1 1 calc R . .
H18B H 0.0327 0.2400 -0.0628 0.042 Uiso 1 1 calc R . .
H18C H 0.0420 0.0862 -0.0758 0.042 Uiso 1 1 calc R . .
C19 C 0.13910(8) 0.3641(2) 0.10965(10) 0.0162(4) Uani 1 1 d . . .
C20 C 0.13757(8) 0.4375(2) 0.05682(11) 0.0179(4) Uani 1 1 d . . .
C21 C 0.10277(8) 0.5396(2) 0.02538(11) 0.0196(5) Uani 1 1 d . . .
H21 H 0.1018 0.5868 -0.0111 0.024 Uiso 1 1 calc R . .
C22 C 0.06941(8) 0.5705(2) 0.04917(11) 0.0204(5) Uani 1 1 d . . .
C23 C 0.07044(8) 0.5035(2) 0.10302(11) 0.0192(5) Uani 1 1 d . . .
H23 H 0.0480 0.5289 0.1193 0.023 Uiso 1 1 calc R . .
C24 C 0.10479(8) 0.3993(2) 0.13253(10) 0.0172(4) Uani 1 1 d . . .
C25 C 0.17852(10) 0.4739(2) -0.00950(12) 0.0257(5) Uani 1 1 d . . .
H25A H 0.1480 0.4633 -0.0520 0.039 Uiso 1 1 calc R . .
H25B H 0.2077 0.4402 -0.0130 0.039 Uiso 1 1 calc R . .
H25C H 0.1835 0.5697 0.0027 0.039 Uiso 1 1 calc R . .
C26 C 0.02965(10) 0.7412(3) -0.03283(13) 0.0325(6) Uani 1 1 d . . .
H26A H 0.0599 0.7967 -0.0194 0.049 Uiso 1 1 calc R . .
H26B H -0.0002 0.7997 -0.0502 0.049 Uiso 1 1 calc R . .
H26C H 0.0265 0.6774 -0.0671 0.049 Uiso 1 1 calc R . .
C27 C 0.07591(9) 0.3640(3) 0.21172(12) 0.0245(5) Uani 1 1 d . . .
H27A H 0.0808 0.4596 0.2244 0.037 Uiso 1 1 calc R . .
H27B H 0.0841 0.3082 0.2506 0.037 Uiso 1 1 calc R . .
H27C H 0.0407 0.3488 0.1787 0.037 Uiso 1 1 calc R . .
C80 C 0.16172(10) -0.1783(3) 0.35892(13) 0.0305(6) Uani 1 1 d . . .
H80A H 0.1297 -0.1316 0.3458 0.046 Uiso 1 1 calc R . .
H80B H 0.1719 -0.2264 0.4005 0.046 Uiso 1 1 calc R . .
H80C H 0.1577 -0.2432 0.3246 0.046 Uiso 1 1 calc R . .
O1 O 0.11161(6) 0.05363(16) 0.13844(7) 0.0203(3) Uani 1 1 d . . .
O2 O 0.19966(6) -0.08156(17) 0.36742(8) 0.0269(4) Uani 1 1 d . . .
O3 O 0.26658(6) 0.24422(16) 0.27979(8) 0.0216(3) Uani 1 1 d . . .
O4 O 0.26305(6) 0.06472(16) 0.15941(8) 0.0214(3) Uani 1 1 d . . .
O5 O 0.18871(6) -0.17924(16) -0.04173(8) 0.0259(4) Uani 1 1 d . . .
O6 O 0.09684(6) 0.16295(16) 0.00691(8) 0.0230(4) Uani 1 1 d . . .
O7 O 0.17322(6) 0.39836(15) 0.04001(8) 0.0208(3) Uani 1 1 d . . .
O8 O 0.03354(6) 0.66783(16) 0.02297(8) 0.0268(4) Uani 1 1 d . . .
O9 O 0.10835(6) 0.32799(16) 0.18456(8) 0.0213(3) Uani 1 1 d . . .
P1 P 0.18496(2) 0.23290(5) 0.14164(3) 0.01447(13) Uani 1 1 d . . .
Cl1 Cl 0.05284(2) 0.47561(6) 0.33726(3) 0.02775(15) Uani 1 1 d . . .
Cl2 Cl 0.04539(2) 0.73753(6) 0.21711(3) 0.03260(16) Uani 1 1 d . . .
Zn1 Zn 0.0000 0.60628(3) 0.2500 0.01700(11) Uani 1 2 d S . .
H1 H 0.2288(10) 0.291(3) 0.1619(12) 0.025(7) Uiso 1 1 d . . .
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'
O O 0.0106 0.0060 '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'
Cl Cl 0.1484 0.1585 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Zn Zn 0.2839 1.4301 '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
O21 C50 O22 59.5(6) . .
O21 C50 C50 121.3(5) . 2_556
O22 C50 C50 120.7(6) . 2_556
C50 O21 O22 61.0(4) . .
O21 O22 C50 59.5(4) . .
C2 C1 C6 118.85(19) . .
C2 C1 P1 118.83(17) . .
C6 C1 P1 122.17(16) . .
O1 C2 C1 113.62(19) . .
O1 C2 C3 124.14(19) . .
C1 C2 C3 122.2(2) . .
C4 C3 C2 117.1(2) . .
C4 C3 H3 121.4 . .
C2 C3 H3 121.4 . .
O2 C4 C3 123.2(2) . .
O2 C4 C5 114.5(2) . .
C3 C4 C5 122.3(2) . .
C6 C5 C4 119.2(2) . .
C6 C5 H5 120.4 . .
C4 C5 H5 120.4 . .
O3 C6 C5 123.8(2) . .
O3 C6 C1 115.94(19) . .
C5 C6 C1 120.3(2) . .
O1 C7 H7A 109.5 . .
O1 C7 H7B 109.5 . .
H7A C7 H7B 109.5 . .
O1 C7 H7C 109.5 . .
H7A C7 H7C 109.5 . .
H7B C7 H7C 109.5 . .
O3 C9 H9A 109.5 . .
O3 C9 H9B 109.5 . .
H9A C9 H9B 109.5 . .
O3 C9 H9C 109.5 . .
H9A C9 H9C 109.5 . .
H9B C9 H9C 109.5 . .
C15 C10 C11 118.88(19) . .
C15 C10 P1 125.67(16) . .
C11 C10 P1 115.45(16) . .
O4 C11 C12 124.93(19) . .
O4 C11 C10 113.70(18) . .
C12 C11 C10 121.4(2) . .
C11 C12 C13 118.4(2) . .
C11 C12 H12 120.8 . .
C13 C12 H12 120.8 . .
O5 C13 C14 123.9(2) . .
O5 C13 C12 114.32(19) . .
C14 C13 C12 121.7(2) . .
C13 C14 C15 118.9(2) . .
C13 C14 H14 120.5 . .
C15 C14 H14 120.5 . .
O6 C15 C14 122.8(2) . .
O6 C15 C10 116.50(19) . .
C14 C15 C10 120.6(2) . .
O4 C16 H16A 109.5 . .
O4 C16 H16B 109.5 . .
H16A C16 H16B 109.5 . .
O4 C16 H16C 109.5 . .
H16A C16 H16C 109.5 . .
H16B C16 H16C 109.5 . .
O5 C17 H17A 109.5 . .
O5 C17 H17B 109.5 . .
H17A C17 H17B 109.5 . .
O5 C17 H17C 109.5 . .
H17A C17 H17C 109.5 . .
H17B C17 H17C 109.5 . .
O6 C18 H18A 109.5 . .
O6 C18 H18B 109.5 . .
H18A C18 H18B 109.5 . .
O6 C18 H18C 109.5 . .
H18A C18 H18C 109.5 . .
H18B C18 H18C 109.5 . .
C20 C19 C24 118.11(19) . .
C20 C19 P1 115.89(16) . .
C24 C19 P1 126.00(16) . .
O7 C20 C21 124.2(2) . .
O7 C20 C19 113.38(19) . .
C21 C20 C19 122.5(2) . .
C20 C21 C22 117.6(2) . .
C20 C21 H21 121.2 . .
C22 C21 H21 121.2 . .
O8 C22 C21 123.6(2) . .
O8 C22 C23 114.17(19) . .
C21 C22 C23 122.2(2) . .
C24 C23 C22 119.0(2) . .
C24 C23 H23 120.5 . .
C22 C23 H23 120.5 . .
O9 C24 C23 123.29(19) . .
O9 C24 C19 116.16(19) . .
C23 C24 C19 120.5(2) . .
O7 C25 H25A 109.5 . .
O7 C25 H25B 109.5 . .
H25A C25 H25B 109.5 . .
O7 C25 H25C 109.5 . .
H25A C25 H25C 109.5 . .
H25B C25 H25C 109.5 . .
O8 C26 H26A 109.5 . .
O8 C26 H26B 109.5 . .
H26A C26 H26B 109.5 . .
O8 C26 H26C 109.5 . .
H26A C26 H26C 109.5 . .
H26B C26 H26C 109.5 . .
O9 C27 H27A 109.5 . .
O9 C27 H27B 109.5 . .
H27A C27 H27B 109.5 . .
O9 C27 H27C 109.5 . .
H27A C27 H27C 109.5 . .
H27B C27 H27C 109.5 . .
O2 C80 H80A 109.5 . .
O2 C80 H80B 109.5 . .
H80A C80 H80B 109.5 . .
O2 C80 H80C 109.5 . .
H80A C80 H80C 109.5 . .
H80B C80 H80C 109.5 . .
C2 O1 C7 119.16(17) . .
C4 O2 C80 117.81(19) . .
C6 O3 C9 117.13(17) . .
C11 O4 C16 118.66(17) . .
C13 O5 C17 117.05(18) . .
C15 O6 C18 118.98(17) . .
C20 O7 C25 118.71(17) . .
C22 O8 C26 117.85(18) . .
C24 O9 C27 118.40(17) . .
C1 P1 C19 115.39(10) . .
C1 P1 C10 108.62(10) . .
C19 P1 C10 114.34(10) . .
C1 P1 H1 106.2(11) . .
C19 P1 H1 106.3(11) . .
C10 P1 H1 105.2(11) . .
Cl2 Zn1 Cl2 109.95(4) 2 .
Cl2 Zn1 Cl1 109.96(2) 2 2
Cl2 Zn1 Cl1 107.99(2) . 2
Cl2 Zn1 Cl1 107.99(2) 2 .
Cl2 Zn1 Cl1 109.96(2) . .
Cl1 Zn1 Cl1 111.00(3) 2 .
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
C50 O21 1.376(7) .
C50 O22 1.3977(10) .
C50 C50 1.464(7) 2_556
O21 O22 1.377(12) .
C1 C2 1.391(3) .
C1 C6 1.403(3) .
C1 P1 1.776(2) .
C2 O1 1.353(3) .
C2 C3 1.396(3) .
C3 C4 1.392(3) .
C3 H3 0.9500 .
C4 O2 1.357(3) .
C4 C5 1.392(3) .
C5 C6 1.385(3) .
C5 H5 0.9500 .
C6 O3 1.361(3) .
C7 O1 1.430(3) .
C7 H7A 0.9800 .
C7 H7B 0.9800 .
C7 H7C 0.9800 .
C9 O3 1.438(3) .
C9 H9A 0.9800 .
C9 H9B 0.9800 .
C9 H9C 0.9800 .
C10 C15 1.398(3) .
C10 C11 1.408(3) .
C10 P1 1.791(2) .
C11 O4 1.357(3) .
C11 C12 1.382(3) .
C12 C13 1.399(3) .
C12 H12 0.9500 .
C13 O5 1.354(3) .
C13 C14 1.392(3) .
C14 C15 1.396(3) .
C14 H14 0.9500 .
C15 O6 1.352(3) .
C16 O4 1.427(3) .
C16 H16A 0.9800 .
C16 H16B 0.9800 .
C16 H16C 0.9800 .
C17 O5 1.436(3) .
C17 H17A 0.9800 .
C17 H17B 0.9800 .
C17 H17C 0.9800 .
C18 O6 1.433(3) .
C18 H18A 0.9800 .
C18 H18B 0.9800 .
C18 H18C 0.9800 .
C19 C20 1.400(3) .
C19 C24 1.410(3) .
C19 P1 1.780(2) .
C20 O7 1.360(3) .
C20 C21 1.387(3) .
C21 C22 1.389(3) .
C21 H21 0.9500 .
C22 O8 1.356(3) .
C22 C23 1.395(3) .
C23 C24 1.389(3) .
C23 H23 0.9500 .
C24 O9 1.351(3) .
C25 O7 1.436(3) .
C25 H25A 0.9800 .
C25 H25B 0.9800 .
C25 H25C 0.9800 .
C26 O8 1.433(3) .
C26 H26A 0.9800 .
C26 H26B 0.9800 .
C26 H26C 0.9800 .
C27 O9 1.434(3) .
C27 H27A 0.9800 .
C27 H27B 0.9800 .
C27 H27C 0.9800 .
C80 O2 1.431(3) .
C80 H80A 0.9800 .
C80 H80B 0.9800 .
C80 H80C 0.9800 .
P1 H1 1.31(3) .
Cl1 Zn1 2.2824(6) .
Cl2 Zn1 2.2624(6) .
Zn1 Cl2 2.2624(6) 2
Zn1 Cl1 2.2824(6) 2
