#------------------------------------------------------------------------------
#$Date: 2016-03-25 16:12:45 +0200 (Fri, 25 Mar 2016) $
#$Revision: 179958 $
#$URL: svn://www.crystallography.net/cod/cif/7/02/52/7025213.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_7025213
loop_
_publ_author_name
'Mautner, Franz A.'
'El Fallah, M. Salah'
'Speed, Saskia'
'Vicente, Ramon'
_publ_section_title
;
 Polynuclear copper(II) complexes of di-2-pyridyl ketone derivatives and
 tert-butylphosphonic acid: crystal structures and magnetic behaviour.
;
_journal_issue                   17
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4070
_journal_page_last               4079
_journal_paper_doi               10.1039/b925793d
_journal_volume                  39
_journal_year                    2010
_chemical_formula_moiety         'C17 H25 Cu2 N4 O12 P, H2 O'
_chemical_formula_sum            'C17 H27 Cu2 N4 O13 P'
_chemical_formula_weight         653.50
_chemical_name_common            '[Cu2(C4H9PO3H)(DPKO2C2H5)(NO3)2(H2O)].H2O'
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL
_cell_angle_alpha                105.34(3)
_cell_angle_beta                 93.90(3)
_cell_angle_gamma                107.15(3)
_cell_formula_units_Z            2
_cell_length_a                   8.161(2)
_cell_length_b                   10.797(2)
_cell_length_c                   15.335(3)
_cell_measurement_reflns_used    200
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      2.50
_cell_volume                     1229.4(6)
_computing_cell_refinement       'Bruker SAINT (1998)'
_computing_data_collection       'Bruker SMART (1998)'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'SHELXTL/PC v.5.03 (Sheldrick, 1995)'
_computing_publication_material  'SHELXTL/PC v.5.03 (Sheldrick, 1995)'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.98
_diffrn_measured_fraction_theta_max 0.98
_diffrn_measurement_device       'Bruker P4'
_diffrn_measurement_method       ω-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  0.0244
_diffrn_reflns_av_sigmaI/netI    0.0386
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            9607
_diffrn_reflns_theta_full        26.26
_diffrn_reflns_theta_max         26.26
_diffrn_reflns_theta_min         1.39
_exptl_absorpt_coefficient_mu    1.868
_exptl_absorpt_correction_T_max  0.755
_exptl_absorpt_correction_T_min  0.590
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.765
_exptl_crystal_description       irregular
_exptl_crystal_F_000             668
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.775
_refine_diff_density_min         -0.503
_refine_diff_density_rms         0.118
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.086
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_matrix_type           full
_refine_ls_number_parameters     338
_refine_ls_number_reflns         4849
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.090
_refine_ls_restrained_S_gt       1.040
_refine_ls_R_factor_all          0.0398
_refine_ls_R_factor_gt           0.0353
_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)+(0.0608P)²+1.6814P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1114
_refine_ls_wR_factor_ref         0.1007
_reflns_number_gt                4388
_reflns_number_total             4849
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b925793d.txt
_cod_data_source_block           rv277a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7025213
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, -z'
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_thermal_displace_type
_atom_site_occupancy
_atom_site_calc_flag
_atom_site_refinement_flags
Cu1 Cu 0.70813(5) 0.03846(4) 0.31067(2) 0.01266(12) Uani 1 d .
Cu2 Cu 1.12254(4) 0.12006(4) 0.27155(2) 0.01177(12) Uani 1 d .
P1 P 0.86510(10) -0.18262(8) 0.21823(5) 0.0122(2) Uani 1 d .
O5 O 0.8952(3) 0.1422(2) 0.25948(14) 0.0128(4) Uani 1 d .
O4 O 0.7674(3) 0.2771(2) 0.20136(14) 0.0146(4) Uani 1 d .
O8 O 0.8612(3) -0.3034(2) 0.25984(15) 0.0156(5) Uani 1 d .
H94 H 0.8482 -0.2870 0.3071 0.023 Uiso 1 d .
O6 O 1.0402(3) -0.0727(2) 0.25500(14) 0.0136(4) Uani 1 d .
O7 O 0.7124(3) -0.1354(2) 0.2409(2) 0.0157(5) Uani 1 d .
O9 O 0.5858(3) -0.0462(2) 0.3982(2) 0.0185(5) Uani 1 d .
H90 H 0.4929 -0.0711 0.3933 0.028 Uiso 1 d .
H91 H 0.6161 -0.1002 0.4032 0.028 Uiso 1 d .
O2 O 0.4941(3) -0.0074(2) 0.1855(2) 0.0227(5) Uani 1 d .
O3 O 0.3579(3) 0.1021(2) 0.27603(15) 0.0152(4) Uani 1 d .
O10 O 1.2113(3) 0.1699(3) 0.4299(2) 0.0237(5) Uani 1 d .
O11 O 1.2172(4) 0.2143(3) 0.5754(2) 0.0296(6) Uani 1 d .
O12 O 0.9720(4) 0.1370(5) 0.4823(2) 0.0384(9) Uani 1 d .
N3 N 0.7152(3) 0.2222(3) 0.3813(2) 0.0145(5) Uani 1 d .
N4 N 1.2021(3) 0.3104(3) 0.2698(2) 0.0150(5) Uani 1 d .
N2 N 1.1314(4) 0.1727(3) 0.4948(2) 0.0223(6) Uani 1 d .
C7 C 1.3644(4) 0.3809(3) 0.2641(2) 0.0170(6) Uani 1 d .
H7 H 1.4523 0.3434 0.2692 0.020 Uiso 1 calc R
C8 C 1.4052(4) 0.5076(3) 0.2509(2) 0.0211(7) Uani 1 d .
H8 H 1.5188 0.5553 0.2477 0.025 Uiso 1 calc R
C9 C 1.2720(5) 0.5625(3) 0.2425(2) 0.0216(7) Uani 1 d .
H9 H 1.2952 0.6472 0.2330 0.026 Uiso 1 calc R
C10 C 1.1054(4) 0.4892(3) 0.2484(2) 0.0188(7) Uani 1 d .
H10 H 1.0151 0.5241 0.2429 0.023 Uiso 1 calc R
C11 C 1.0734(4) 0.3635(3) 0.2626(2) 0.0138(6) Uani 1 d .
C6 C 0.8935(4) 0.2732(3) 0.2683(2) 0.0135(6) Uani 1 d .
C5 C 0.8213(4) 0.3243(3) 0.3566(2) 0.0135(6) Uani 1 d .
C4 C 0.8449(4) 0.4583(3) 0.4021(2) 0.0197(7) Uani 1 d .
H4 H 0.9197 0.5280 0.3849 0.024 Uiso 1 calc R
C3 C 0.7535(5) 0.4865(4) 0.4746(2) 0.0227(7) Uani 1 d .
H3 H 0.7678 0.5760 0.5069 0.027 Uiso 1 calc R
C2 C 0.6424(4) 0.3815(4) 0.4981(2) 0.0212(7) Uani 1 d .
H2 H 0.5784 0.3987 0.5451 0.025 Uiso 1 calc R
C1 C 0.6279(4) 0.2505(3) 0.4506(2) 0.0180(7) Uani 1 d .
H1 H 0.5550 0.1793 0.4672 0.022 Uiso 1 calc R
C14 C 0.8430(4) -0.2606(3) 0.0966(2) 0.0170(6) Uani 1 d .
C15 C 0.8528(4) -0.1519(3) 0.0485(2) 0.0206(7) Uani 1 d .
H15A H 0.8341 -0.1929 -0.0166 0.031 Uiso 1 calc R
H15B H 0.9652 -0.0837 0.0673 0.031 Uiso 1 calc R
H15C H 0.7651 -0.1110 0.0646 0.031 Uiso 1 calc R
C16 C 0.9889(5) -0.3217(4) 0.0763(2) 0.0233(7) Uani 1 d .
H16A H 0.9796 -0.3596 0.0113 0.035 Uiso 1 calc R
H16B H 0.9790 -0.3917 0.1052 0.035 Uiso 1 calc R
H16C H 1.0994 -0.2519 0.0996 0.035 Uiso 1 calc R
C17 C 0.6667(5) -0.3721(4) 0.0636(2) 0.0254(8) Uani 1 d .
H17A H 0.5761 -0.3334 0.0771 0.038 Uiso 1 calc R
H17B H 0.6599 -0.4399 0.0943 0.038 Uiso 1 calc R
H17C H 0.6533 -0.4130 -0.0013 0.038 Uiso 1 calc R
C12 C 0.7731(5) 0.2057(4) 0.1082(2) 0.0209(7) Uani 1 d .
H12A H 0.7425 0.1090 0.1000 0.025 Uiso 1 calc R
H12B H 0.8890 0.2378 0.0936 0.025 Uiso 1 calc R
C13 C 0.6450(5) 0.2332(4) 0.0471(2) 0.0251(8) Uani 1 d .
H13A H 0.5331 0.2091 0.0660 0.038 Uiso 1 calc R
H13B H 0.6372 0.1802 -0.0151 0.038 Uiso 1 calc R
H13C H 0.6829 0.3279 0.0513 0.038 Uiso 1 calc R
N1 N 0.3791(3) 0.0453(3) 0.1941(2) 0.0132(5) Uani 1 d .
O1 O 0.2834(3) 0.0460(2) 0.1282(2) 0.0201(5) Uani 1 d .
O13 O 0.2471(3) -0.1415(2) 0.3752(2) 0.0214(5) Uani 1 d .
H92 H 0.2022 -0.1372 0.4166 0.032 Uiso 1 d .
H93 H 0.2091 -0.1093 0.3448 0.032 Uiso 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'
Cu Cu 0.3201 1.2651 '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'
P P 0.1023 0.0942 '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
O7 Cu1 O5 95.15(9) . . yes
O7 Cu1 N3 177.16(10) . . yes
O5 Cu1 N3 82.13(10) . . yes
O7 Cu1 O9 89.50(10) . . yes
O5 Cu1 O9 160.03(9) . . yes
N3 Cu1 O9 92.80(10) . . yes
O7 Cu1 O2 80.42(9) . . yes
O5 Cu1 O2 94.27(9) . . yes
N3 Cu1 O2 100.53(10) . . yes
O9 Cu1 O2 105.66(9) . . yes
O6 Cu2 O5 96.47(9) . . yes
O6 Cu2 N4 172.08(10) . . yes
O5 Cu2 N4 82.84(10) . . yes
O6 Cu2 O3 85.54(9) . 1_655 yes
O5 Cu2 O3 175.86(9) . 1_655 yes
N4 Cu2 O3 94.66(10) . 1_655 yes
O6 Cu2 O10 92.22(10) . . yes
O5 Cu2 O10 105.63(9) . . yes
N4 Cu2 O10 95.57(11) . . yes
O3 Cu2 O10 77.85(9) 1_655 . yes
O7 P1 O6 113.97(12) . . yes
O7 P1 O8 109.26(12) . . yes
O6 P1 O8 107.83(12) . . yes
O7 P1 C14 110.66(14) . . yes
O6 P1 C14 111.22(14) . . yes
O8 P1 C14 103.31(14) . . yes
C6 O5 Cu2 116.2(2) . . yes
C6 O5 Cu1 113.0(2) . . yes
Cu2 O5 Cu1 119.84(11) . . yes
C6 O4 C12 114.8(2) . . ?
P1 O8 H94 111.5 . . ?
P1 O6 Cu2 133.63(13) . . yes
P1 O7 Cu1 129.75(13) . . yes
H90 O9 H91 106.8 . . ?
N1 O2 Cu1 120.3(2) . . yes
N1 O3 Cu2 108.9(2) . 1_455 yes
N2 O10 Cu2 132.7(2) . . yes
C1 N3 C5 119.6(3) . . ?
C1 N3 Cu1 125.5(2) . . ?
C5 N3 Cu1 115.0(2) . . ?
C7 N4 C11 119.7(3) . . ?
C7 N4 Cu2 125.5(2) . . ?
C11 N4 Cu2 114.3(2) . . ?
O10 N2 O12 120.6(3) . . ?
O10 N2 O11 118.6(3) . . ?
O12 N2 O11 120.8(3) . . ?
N4 C7 C8 122.1(3) . . ?
N4 C7 H7 119.0 . . ?
C8 C7 H7 119.0 . . ?
C7 C8 C9 118.5(3) . . ?
C7 C8 H8 120.7 . . ?
C9 C8 H8 120.7 . . ?
C10 C9 C8 119.0(3) . . ?
C10 C9 H9 120.5 . . ?
C8 C9 H9 120.5 . . ?
C9 C10 C11 119.7(3) . . ?
C9 C10 H10 120.1 . . ?
C11 C10 H10 120.1 . . ?
N4 C11 C10 121.1(3) . . ?
N4 C11 C6 115.1(3) . . ?
C10 C11 C6 123.8(3) . . ?
O5 C6 O4 112.5(2) . . ?
O5 C6 C11 109.9(2) . . ?
O4 C6 C11 110.0(2) . . ?
O5 C6 C5 109.0(2) . . ?
O4 C6 C5 100.4(2) . . ?
C11 C6 C5 114.8(3) . . ?
N3 C5 C4 121.6(3) . . ?
N3 C5 C6 112.6(3) . . ?
C4 C5 C6 125.5(3) . . ?
C5 C4 C3 118.3(3) . . ?
C5 C4 H4 120.9 . . ?
C3 C4 H4 120.9 . . ?
C2 C3 C4 119.7(3) . . ?
C2 C3 H3 120.1 . . ?
C4 C3 H3 120.1 . . ?
C1 C2 C3 118.6(3) . . ?
C1 C2 H2 120.7 . . ?
C3 C2 H2 120.7 . . ?
N3 C1 C2 122.2(3) . . ?
N3 C1 H1 118.9 . . ?
C2 C1 H1 118.9 . . ?
C17 C14 C15 109.4(3) . . ?
C17 C14 C16 109.9(3) . . ?
C15 C14 C16 110.3(3) . . ?
C17 C14 P1 109.1(2) . . ?
C15 C14 P1 108.4(2) . . ?
C16 C14 P1 109.8(2) . . ?
C14 C15 H15A 109.5 . . ?
C14 C15 H15B 109.5 . . ?
H15A C15 H15B 109.5 . . ?
C14 C15 H15C 109.5 . . ?
H15A C15 H15C 109.5 . . ?
H15B C15 H15C 109.5 . . ?
C14 C16 H16A 109.5 . . ?
C14 C16 H16B 109.5 . . ?
H16A C16 H16B 109.5 . . ?
C14 C16 H16C 109.5 . . ?
H16A C16 H16C 109.5 . . ?
H16B C16 H16C 109.5 . . ?
C14 C17 H17A 109.5 . . ?
C14 C17 H17B 109.5 . . ?
H17A C17 H17B 109.5 . . ?
C14 C17 H17C 109.5 . . ?
H17A C17 H17C 109.5 . . ?
H17B C17 H17C 109.5 . . ?
O4 C12 C13 107.2(3) . . ?
O4 C12 H12A 110.3 . . ?
C13 C12 H12A 110.3 . . ?
O4 C12 H12B 110.3 . . ?
C13 C12 H12B 110.3 . . ?
H12A C12 H12B 108.5 . . ?
C12 C13 H13A 109.5 . . ?
C12 C13 H13B 109.5 . . ?
H13A C13 H13B 109.5 . . ?
C12 C13 H13C 109.5 . . ?
H13A C13 H13C 109.5 . . ?
H13B C13 H13C 109.5 . . ?
O2 N1 O1 123.1(3) . . ?
O2 N1 O3 118.0(2) . . ?
O1 N1 O3 118.9(2) . . ?
H92 O13 H93 108.1 . . ?
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
Cu1 O7 1.911(2) . yes
Cu1 O5 1.955(2) . yes
Cu1 N3 1.975(3) . yes
Cu1 O9 1.982(2) . yes
Cu1 O2 2.348(3) . yes
Cu2 O6 1.929(2) . yes
Cu2 O5 1.942(2) . yes
Cu2 N4 1.972(3) . yes
Cu2 O3 1.985(2) 1_655 yes
Cu2 O10 2.356(2) . yes
P1 O7 1.508(2) . yes
P1 O6 1.518(2) . yes
P1 O8 1.590(2) . yes
P1 C14 1.804(3) . yes
O5 C6 1.389(4) . yes
O4 C6 1.421(4) . yes
O4 C12 1.444(4) . yes
O8 H94 0.722 . ?
O9 H90 0.717 . ?
O9 H91 0.717 . ?
O2 N1 1.231(3) . ?
O3 N1 1.292(3) . ?
O3 Cu2 1.985(2) 1_455 yes
O10 N2 1.225(4) . ?
O11 N2 1.274(4) . ?
O12 N2 1.229(4) . ?
N3 C1 1.338(4) . ?
N3 C5 1.346(4) . ?
N4 C7 1.341(4) . ?
N4 C11 1.348(4) . ?
C7 C8 1.383(5) . ?
C7 H7 0.93 . ?
C8 C9 1.397(5) . ?
C8 H8 0.93 . ?
C9 C10 1.380(5) . ?
C9 H9 0.93 . ?
C10 C11 1.383(4) . ?
C10 H10 0.93 . ?
C11 C6 1.526(4) . ?
C6 C5 1.546(4) . ?
C5 C4 1.378(4) . ?
C4 C3 1.398(5) . ?
C4 H4 0.93 . ?
C3 C2 1.376(5) . ?
C3 H3 0.93 . ?
C2 C1 1.374(5) . ?
C2 H2 0.93 . ?
C1 H1 0.93 . ?
C14 C17 1.527(4) . ?
C14 C15 1.530(4) . ?
C14 C16 1.535(5) . ?
C15 H15A 0.96 . ?
C15 H15B 0.96 . ?
C15 H15C 0.96 . ?
C16 H16A 0.96 . ?
C16 H16B 0.96 . ?
C16 H16C 0.96 . ?
C17 H17A 0.96 . ?
C17 H17B 0.96 . ?
C17 H17C 0.96 . ?
C12 C13 1.502(5) . ?
C12 H12A 0.97 . ?
C12 H12B 0.97 . ?
C13 H13A 0.96 . ?
C13 H13B 0.96 . ?
C13 H13C 0.96 . ?
N1 O1 1.238(3) . ?
O13 H92 0.752 . ?
O13 H93 0.751 . ?
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
C11 N4 C7 C8 0.0(5)
N4 C7 C8 C9 -0.6(5)
C7 C8 C9 C10 0.6(5)
C8 C9 C10 C11 0.0(5)
C7 N4 C11 C10 0.7(5)
C7 N4 C11 C6 178.9(3)
C9 C10 C11 N4 -0.7(5)
C9 C10 C11 C6 -178.7(3)
C12 O4 C6 O5 -50.6(3)
C12 O4 C6 C11 72.3(3)
C12 O4 C6 C5 -166.3(2)
N4 C11 C6 O5 -13.2(4)
C10 C11 C6 O5 164.9(3)
N4 C11 C6 O4 -137.6(3)
C10 C11 C6 O4 40.5(4)
N4 C11 C6 C5 110.1(3)
C10 C11 C6 C5 -71.8(4)
C1 N3 C5 C4 1.1(4)
C1 N3 C5 C6 -172.9(3)
O5 C6 C5 N3 -26.0(3)
O4 C6 C5 N3 92.4(3)
C11 C6 C5 N3 -149.7(3)
O5 C6 C5 C4 160.3(3)
O4 C6 C5 C4 -81.3(4)
C11 C6 C5 C4 36.5(4)
N3 C5 C4 C3 -0.8(5)
C6 C5 C4 C3 172.4(3)
C5 C4 C3 C2 -0.6(5)
C4 C3 C2 C1 1.7(5)
C5 N3 C1 C2 0.1(5)
C3 C2 C1 N3 -1.5(5)
O7 P1 C14 C17 -53.4(3)
O6 P1 C14 C17 178.8(2)
O8 P1 C14 C17 63.4(3)
O7 P1 C14 C15 65.6(2)
O6 P1 C14 C15 -62.2(2)
O8 P1 C14 C15 -177.6(2)
O7 P1 C14 C16 -173.9(2)
O6 P1 C14 C16 58.4(2)
O8 P1 C14 C16 -57.0(2)
C6 O4 C12 C13 -174.1(3)
