#------------------------------------------------------------------------------
#$Date: 2022-09-15 14:30:03 +0300 (Thu, 15 Sep 2022) $
#$Revision: 277873 $
#$URL: file:///home/coder/svn-repositories/cod/cif/7/10/02/7100224.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_7100224
loop_
_publ_author_name
'Artem Melman'
'Irina Ekeltchik'
'Jenny Gun'
'Ovadia Lev'
_publ_section_title
;
Bis-hydroxyaminotriazines: highly stable
hydroxylamine-based ligands for iron(III) cations
;
_journal_name_full               'Chemical Communications'
_journal_paper_doi               10.1039/b508138f
_journal_year                    2005
_chemical_formula_moiety         'C18 H29 Fe N12 O6, C H4 O'
_chemical_formula_sum            'C19 H33 Fe N12 O7'
_chemical_formula_weight         597.42
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_cell_angle_alpha                92.2360(10)
_cell_angle_beta                 101.4470(10)
_cell_angle_gamma                92.2080(10)
_cell_formula_units_Z            4
_cell_length_a                   11.4324(9)
_cell_length_b                   13.9381(11)
_cell_length_c                   17.3580(14)
_cell_measurement_temperature    295(1)
_cell_volume                     2705.8(4)
_diffrn_ambient_temperature      295(1)
_exptl_crystal_density_diffrn    1.467
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_database_code               7100224
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_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
C1 C 0.3594(2) 0.31619(17) 0.24512(15) 0.0397(6) Uani 1 1 d . . .
C2 C 0.2323(2) 0.27386(19) 0.13202(16) 0.0450(7) Uani 1 1 d . . .
C3 C 0.4272(2) 0.25053(19) 0.14096(15) 0.0434(6) Uani 1 1 d . . .
C4 C 0.3098(2) 0.3885(2) 0.36579(17) 0.0625(8) Uani 1 1 d . . .
H4A H 0.3358 0.4533 0.3836 0.094 Uiso 1 1 calc R . .
H4B H 0.3101 0.3498 0.4104 0.094 Uiso 1 1 calc R . .
H4C H 0.2303 0.3878 0.3346 0.094 Uiso 1 1 calc R . .
C5 C 0.5197(3) 0.1677(2) 0.04062(18) 0.0769(10) Uani 1 1 d . . .
H5A H 0.5480 0.1051 0.0530 0.115 Uiso 1 1 calc R . .
H5B H 0.5702 0.1992 0.0103 0.115 Uiso 1 1 calc R . .
H5C H 0.4393 0.1615 0.0107 0.115 Uiso 1 1 calc R . .
C6 C 0.0899(3) 0.2184(2) 0.01068(17) 0.0642(9) Uani 1 1 d . . .
H6A H 0.1624 0.2027 -0.0071 0.077 Uiso 1 1 calc R . .
H6B H 0.0463 0.2614 -0.0260 0.077 Uiso 1 1 calc R . .
C7 C 0.0154(3) 0.1292(2) 0.0132(2) 0.0747(10) Uani 1 1 d . . .
H7A H -0.0090 0.1006 -0.0397 0.090 Uiso 1 1 calc R . .
H7B H 0.0631 0.0836 0.0450 0.090 Uiso 1 1 calc R . .
C8 C -0.0549(3) 0.1884(3) 0.1220(2) 0.0762(10) Uani 1 1 d . . .
H8A H -0.0079 0.1440 0.1555 0.091 Uiso 1 1 calc R . .
H8B H -0.1263 0.1998 0.1426 0.091 Uiso 1 1 calc R . .
C9 C 0.0160(2) 0.2812(2) 0.1240(2) 0.0671(9) Uani 1 1 d . . .
H9A H -0.0331 0.3281 0.0948 0.081 Uiso 1 1 calc R . .
H9B H 0.0413 0.3061 0.1780 0.081 Uiso 1 1 calc R . .
C10 C 0.7608(2) 0.12111(19) 0.35061(15) 0.0415(6) Uani 1 1 d . . .
C11 C 0.9594(2) 0.12736(19) 0.35916(15) 0.0438(6) Uani 1 1 d . . .
C12 C 0.8607(2) 0.26047(18) 0.33025(14) 0.0393(6) Uani 1 1 d . . .
C13 C 0.6221(3) -0.0177(2) 0.35557(19) 0.0650(9) Uani 1 1 d . . .
H13A H 0.5764 -0.0450 0.3067 0.097 Uiso 1 1 calc R . .
H13B H 0.5755 -0.0223 0.3957 0.097 Uiso 1 1 calc R . .
H13C H 0.6937 -0.0520 0.3703 0.097 Uiso 1 1 calc R . .
C14 C 0.9359(2) 0.4199(2) 0.2988(2) 0.0627(9) Uani 1 1 d . . .
H14A H 1.0113 0.3901 0.3051 0.094 Uiso 1 1 calc R . .
H14B H 0.9409 0.4717 0.3376 0.094 Uiso 1 1 calc R . .
H14C H 0.9162 0.4445 0.2471 0.094 Uiso 1 1 calc R . .
C15 C 1.1700(2) 0.1244(2) 0.3489(2) 0.0652(9) Uani 1 1 d . . .
H15A H 1.1692 0.1940 0.3533 0.078 Uiso 1 1 calc R . .
H15B H 1.1682 0.1056 0.2943 0.078 Uiso 1 1 calc R . .
C16 C 1.2802(3) 0.0923(2) 0.3982(2) 0.0744(10) Uani 1 1 d . . .
H16A H 1.3485 0.1169 0.3785 0.089 Uiso 1 1 calc R . .
H16B H 1.2869 0.1186 0.4516 0.089 Uiso 1 1 calc R . .
C17 C 1.1825(3) -0.0466(3) 0.4279(2) 0.0846(11) Uani 1 1 d . . .
H17A H 1.1876 -0.0216 0.4815 0.102 Uiso 1 1 calc R . .
H17B H 1.1853 -0.1160 0.4289 0.102 Uiso 1 1 calc R . .
C18 C 1.0670(3) -0.0213(2) 0.3792(2) 0.0725(10) Uani 1 1 d . . .
H18A H 1.0568 -0.0525 0.3273 0.087 Uiso 1 1 calc R . .
H18B H 1.0019 -0.0437 0.4032 0.087 Uiso 1 1 calc R . .
C21 C 1.0786(2) 0.62551(17) 0.23649(15) 0.0377(6) Uani 1 1 d . . .
C22 C 1.2127(2) 0.66296(18) 0.34769(16) 0.0423(6) Uani 1 1 d . . .
C23 C 1.0189(2) 0.68453(19) 0.34604(16) 0.0431(6) Uani 1 1 d . . .
C24 C 1.1184(2) 0.5544(2) 0.11283(17) 0.0603(8) Uani 1 1 d . . .
H24A H 1.1989 0.5535 0.1421 0.091 Uiso 1 1 calc R . .
H24B H 1.1169 0.5917 0.0673 0.091 Uiso 1 1 calc R . .
H24C H 1.0889 0.4899 0.0965 0.091 Uiso 1 1 calc R . .
C25 C 0.9346(3) 0.7554(2) 0.45503(19) 0.0776(10) Uani 1 1 d . . .
H25A H 1.0167 0.7620 0.4818 0.116 Uiso 1 1 calc R . .
H25B H 0.8895 0.7188 0.4858 0.116 Uiso 1 1 calc R . .
H25C H 0.9028 0.8179 0.4479 0.116 Uiso 1 1 calc R . .
C26 C 1.3633(2) 0.7088(2) 0.46856(16) 0.0589(8) Uani 1 1 d . . .
H26A H 1.3997 0.6582 0.5005 0.071 Uiso 1 1 calc R . .
H26B H 1.2935 0.7279 0.4882 0.071 Uiso 1 1 calc R . .
C27 C 1.4505(2) 0.7932(2) 0.47455(18) 0.0616(8) Uani 1 1 d . . .
H27A H 1.4110 0.8461 0.4472 0.074 Uiso 1 1 calc R . .
H27B H 1.4776 0.8139 0.5294 0.074 Uiso 1 1 calc R . .
C28 C 1.5124(2) 0.7412(2) 0.36093(18) 0.0573(8) Uani 1 1 d . . .
H28A H 1.5815 0.7271 0.3385 0.069 Uiso 1 1 calc R . .
H28B H 1.4731 0.7939 0.3332 0.069 Uiso 1 1 calc R . .
C29 C 1.4280(2) 0.6543(2) 0.34914(18) 0.0577(8) Uani 1 1 d . . .
H29A H 1.3994 0.6396 0.2933 0.069 Uiso 1 1 calc R . .
H29B H 1.4692 0.5994 0.3718 0.069 Uiso 1 1 calc R . .
C30 C 0.6742(2) 0.82822(19) 0.16032(14) 0.0399(6) Uani 1 1 d . . .
C31 C 0.4755(2) 0.81921(19) 0.15281(14) 0.0403(6) Uani 1 1 d . . .
C32 C 0.5753(2) 0.68369(18) 0.16602(14) 0.0385(6) Uani 1 1 d . . .
C33 C 0.8107(3) 0.9702(2) 0.1627(2) 0.0669(9) Uani 1 1 d . . .
H33A H 0.7389 1.0050 0.1571 0.100 Uiso 1 1 calc R . .
H33B H 0.8483 0.9814 0.1189 0.100 Uiso 1 1 calc R . .
H33C H 0.8642 0.9915 0.2107 0.100 Uiso 1 1 calc R . .
C34 C 0.5011(2) 0.51767(19) 0.18020(18) 0.0576(8) Uani 1 1 d . . .
H34A H 0.4243 0.5455 0.1722 0.086 Uiso 1 1 calc R . .
H34B H 0.5170 0.4896 0.2306 0.086 Uiso 1 1 calc R . .
H34C H 0.5013 0.4689 0.1397 0.086 Uiso 1 1 calc R . .
C35 C 0.2568(2) 0.8126(2) 0.14526(18) 0.0550(8) Uani 1 1 d . . .
H35A H 0.2700 0.7482 0.1633 0.066 Uiso 1 1 calc R . .
H35B H 0.2117 0.8075 0.0916 0.066 Uiso 1 1 calc R . .
C36 C 0.1880(2) 0.8656(2) 0.19662(19) 0.0596(8) Uani 1 1 d . . .
H36A H 0.1101 0.8333 0.1921 0.072 Uiso 1 1 calc R . .
H36B H 0.2295 0.8638 0.2510 0.072 Uiso 1 1 calc R . .
C37 C 0.2872(3) 1.0104(2) 0.1859(2) 0.0694(9) Uani 1 1 d . . .
H37A H 0.3286 1.0079 0.2403 0.083 Uiso 1 1 calc R . .
H37B H 0.2775 1.0774 0.1742 0.083 Uiso 1 1 calc R . .
C38 C 0.3613(3) 0.9660(2) 0.1335(2) 0.0656(9) Uani 1 1 d . . .
H38A H 0.3244 0.9738 0.0789 0.079 Uiso 1 1 calc R . .
H38B H 0.4401 0.9980 0.1435 0.079 Uiso 1 1 calc R . .
C41 C 0.7022(4) 0.4102(3) 0.0376(2) 0.1163(15) Uani 1 1 d . . .
H41A H 0.7580 0.4613 0.0319 0.175 Uiso 1 1 calc R . .
H41B H 0.6222 0.4305 0.0209 0.175 Uiso 1 1 calc R . .
H41C H 0.7142 0.3549 0.0058 0.175 Uiso 1 1 calc R . .
C42 C 0.7290(4) 0.5269(3) 0.4456(2) 0.1313(19) Uani 1 1 d . . .
H42A H 0.8055 0.5009 0.4640 0.197 Uiso 1 1 calc R . .
H42B H 0.6669 0.4801 0.4496 0.197 Uiso 1 1 calc R . .
H42C H 0.7214 0.5836 0.4771 0.197 Uiso 1 1 calc R . .
Fe1 Fe 0.60274(3) 0.27280(3) 0.29782(2) 0.04255(12) Uani 1 1 d . . .
Fe2 Fe 0.83357(3) 0.67188(3) 0.19259(2) 0.04376(12) Uani 1 1 d . . .
N1 N 0.45405(17) 0.28518(15) 0.21608(12) 0.0392(5) Uani 1 1 d . . .
N2 N 0.24632(18) 0.31366(15) 0.20535(13) 0.0462(6) Uani 1 1 d . . .
N3 N 0.31968(19) 0.24265(16) 0.09605(12) 0.0472(6) Uani 1 1 d . . .
N4 N 0.38896(18) 0.35040(16) 0.31911(13) 0.0475(6) Uani 1 1 d . . .
N5 N 0.5219(2) 0.2231(2) 0.11153(14) 0.0681(8) Uani 1 1 d . . .
N6 N 0.1202(2) 0.26550(18) 0.08936(14) 0.0584(7) Uani 1 1 d . . .
N7 N 0.75750(17) 0.21526(15) 0.33663(12) 0.0407(5) Uani 1 1 d . . .
N8 N 0.86146(18) 0.07319(15) 0.36518(13) 0.0449(5) Uani 1 1 d . . .
N9 N 0.96596(18) 0.22050(15) 0.34134(13) 0.0438(5) Uani 1 1 d . . .
N10 N 0.65299(19) 0.08198(16) 0.34656(14) 0.0507(6) Uani 1 1 d . . .
N11 N 0.84500(18) 0.35020(16) 0.30848(14) 0.0499(6) Uani 1 1 d . . .
N12 N 1.06456(19) 0.08278(16) 0.37268(14) 0.0547(6) Uani 1 1 d . . .
N21 N 0.98739(17) 0.65479(15) 0.26985(12) 0.0388(5) Uani 1 1 d . . .
N22 N 1.19300(17) 0.62637(15) 0.27312(13) 0.0429(5) Uani 1 1 d . . .
N23 N 1.12872(18) 0.69038(16) 0.38827(12) 0.0470(6) Uani 1 1 d . . .
N24 N 1.04424(17) 0.59664(16) 0.16152(13) 0.0457(6) Uani 1 1 d . . .
N25 N 0.9271(2) 0.7071(2) 0.38042(14) 0.0659(7) Uani 1 1 d . . .
N26 N 1.32741(18) 0.67308(17) 0.38675(13) 0.0517(6) Uani 1 1 d . . .
N27 N 0.67833(17) 0.73242(15) 0.16444(13) 0.0421(5) Uani 1 1 d . . .
N28 N 0.57398(18) 0.87644(14) 0.15301(12) 0.0416(5) Uani 1 1 d . . .
N29 N 0.46928(17) 0.72264(14) 0.15857(12) 0.0402(5) Uani 1 1 d . . .
N30 N 0.78161(19) 0.86906(16) 0.16472(14) 0.0503(6) Uani 1 1 d . . .
N31 N 0.59129(18) 0.59075(15) 0.17738(14) 0.0484(6) Uani 1 1 d . . .
N32 N 0.37172(19) 0.86419(16) 0.14796(14) 0.0523(6) Uani 1 1 d . . .
O1 O 0.50768(15) 0.34993(13) 0.35586(10) 0.0498(5) Uani 1 1 d . . .
O2 O 0.63247(17) 0.23057(17) 0.16468(11) 0.0557(5) Uani 1 1 d . . .
H2 H 0.662(3) 0.286(2) 0.149(2) 0.090(13) Uiso 1 1 d . . .
O3 O -0.08807(19) 0.14667(17) 0.04474(15) 0.0803(7) Uani 1 1 d . . .
O4 O 0.55798(15) 0.14022(13) 0.32419(11) 0.0521(5) Uani 1 1 d . . .
O5 O 0.72743(14) 0.37938(12) 0.29566(10) 0.0464(4) Uani 1 1 d . . .
O6 O 1.28210(18) -0.00951(17) 0.39912(14) 0.0773(7) Uani 1 1 d . . .
O21 O 0.92476(14) 0.59994(13) 0.12759(10) 0.0501(5) Uani 1 1 d . . .
O22 O 0.81457(17) 0.70474(18) 0.32996(12) 0.0563(6) Uani 1 1 d . . .
H22 H 0.787(3) 0.655(3) 0.342(2) 0.097(15) Uiso 1 1 d . . .
O23 O 1.55086(16) 0.76958(14) 0.44144(12) 0.0617(6) Uani 1 1 d . . .
O24 O 0.87657(15) 0.80882(13) 0.17716(11) 0.0537(5) Uani 1 1 d . . .
O25 O 0.70920(14) 0.56298(12) 0.18716(11) 0.0474(5) Uani 1 1 d . . .
O26 O 0.17298(16) 0.96286(14) 0.17672(13) 0.0640(6) Uani 1 1 d . . .
O41 O 0.7203(2) 0.3862(2) 0.11770(15) 0.0743(7) Uani 1 1 d . . .
H41 H 0.719(3) 0.433(2) 0.1415(18) 0.052(10) Uiso 1 1 d . . .
O42 O 0.7191(2) 0.55011(18) 0.36838(16) 0.0807(8) Uani 1 1 d . . .
H42 H 0.717(3) 0.503(2) 0.3409(19) 0.073(12) Uiso 1 1 d . . .
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
C1 N4 1.326(3) . ?
C1 N2 1.337(3) . ?
C1 N1 1.360(3) . ?
C2 N6 1.345(3) . ?
C2 N2 1.346(3) . ?
C2 N3 1.356(3) . ?
C3 N3 1.317(3) . ?
C3 N1 1.345(3) . ?
C3 N5 1.347(3) . ?
C4 N4 1.433(3) . ?
C4 H4A 0.9600 . ?
C4 H4B 0.9600 . ?
C4 H4C 0.9600 . ?
C5 N5 1.423(3) . ?
C5 H5A 0.9600 . ?
C5 H5B 0.9600 . ?
C5 H5C 0.9600 . ?
C6 N6 1.463(3) . ?
C6 C7 1.486(4) . ?
C6 H6A 0.9700 . ?
C6 H6B 0.9700 . ?
C7 O3 1.425(4) . ?
C7 H7A 0.9700 . ?
C7 H7B 0.9700 . ?
C8 O3 1.414(4) . ?
C8 C9 1.495(4) . ?
C8 H8A 0.9700 . ?
C8 H8B 0.9700 . ?
C9 N6 1.457(3) . ?
C9 H9A 0.9700 . ?
C9 H9B 0.9700 . ?
C10 N10 1.316(3) . ?
C10 N8 1.338(3) . ?
C10 N7 1.345(3) . ?
C11 N9 1.349(3) . ?
C11 N8 1.350(3) . ?
C11 N12 1.358(3) . ?
C12 N9 1.328(3) . ?
C12 N11 1.329(3) . ?
C12 N7 1.342(3) . ?
C13 N10 1.442(3) . ?
C13 H13A 0.9600 . ?
C13 H13B 0.9600 . ?
C13 H13C 0.9600 . ?
C14 N11 1.434(3) . ?
C14 H14A 0.9600 . ?
C14 H14B 0.9600 . ?
C14 H14C 0.9600 . ?
C15 N12 1.457(3) . ?
C15 C16 1.472(4) . ?
C15 H15A 0.9700 . ?
C15 H15B 0.9700 . ?
C16 O6 1.421(4) . ?
C16 H16A 0.9700 . ?
C16 H16B 0.9700 . ?
C17 O6 1.419(4) . ?
C17 C18 1.482(4) . ?
C17 H17A 0.9700 . ?
C17 H17B 0.9700 . ?
C18 N12 1.460(3) . ?
C18 H18A 0.9700 . ?
C18 H18B 0.9700 . ?
C21 N24 1.324(3) . ?
C21 N22 1.335(3) . ?
C21 N21 1.357(3) . ?
C22 N22 1.345(3) . ?
C22 N26 1.351(3) . ?
C22 N23 1.356(3) . ?
C23 N23 1.320(3) . ?
C23 N21 1.344(3) . ?
C23 N25 1.348(3) . ?
C24 N24 1.436(3) . ?
C24 H24A 0.9600 . ?
C24 H24B 0.9600 . ?
C24 H24C 0.9600 . ?
C25 N25 1.421(3) . ?
C25 H25A 0.9600 . ?
C25 H25B 0.9600 . ?
C25 H25C 0.9600 . ?
C26 N26 1.460(3) . ?
C26 C27 1.499(4) . ?
C26 H26A 0.9700 . ?
C26 H26B 0.9700 . ?
C27 O23 1.425(3) . ?
C27 H27A 0.9700 . ?
C27 H27B 0.9700 . ?
C28 O23 1.415(3) . ?
C28 C29 1.500(4) . ?
C28 H28A 0.9700 . ?
C28 H28B 0.9700 . ?
C29 N26 1.458(3) . ?
C29 H29A 0.9700 . ?
C29 H29B 0.9700 . ?
C30 N30 1.320(3) . ?
C30 N28 1.338(3) . ?
C30 N27 1.342(3) . ?
C31 N32 1.352(3) . ?
C31 N29 1.354(3) . ?
C31 N28 1.354(3) . ?
C32 N31 1.332(3) . ?
C32 N29 1.332(3) . ?
C32 N27 1.342(3) . ?
C33 N30 1.439(3) . ?
C33 H33A 0.9600 . ?
C33 H33B 0.9600 . ?
C33 H33C 0.9600 . ?
C34 N31 1.431(3) . ?
C34 H34A 0.9600 . ?
C34 H34B 0.9600 . ?
C34 H34C 0.9600 . ?
C35 N32 1.465(3) . ?
C35 C36 1.493(4) . ?
C35 H35A 0.9700 . ?
C35 H35B 0.9700 . ?
C36 O26 1.421(3) . ?
C36 H36A 0.9700 . ?
C36 H36B 0.9700 . ?
C37 O26 1.419(3) . ?
C37 C38 1.494(4) . ?
C37 H37A 0.9700 . ?
C37 H37B 0.9700 . ?
C38 N32 1.457(3) . ?
C38 H38A 0.9700 . ?
C38 H38B 0.9700 . ?
C41 O41 1.420(4) . ?
C41 H41A 0.9600 . ?
C41 H41B 0.9600 . ?
C41 H41C 0.9600 . ?
C42 O42 1.375(4) . ?
C42 H42A 0.9600 . ?
C42 H42B 0.9600 . ?
C42 H42C 0.9600 . ?
Fe1 O1 1.9472(17) . ?
Fe1 N7 1.976(2) . ?
Fe1 O4 1.9931(18) . ?
Fe1 N1 2.004(2) . ?
Fe1 O5 2.0255(17) . ?
Fe1 O2 2.4544(19) . ?
Fe2 O21 1.9557(17) . ?
Fe2 N27 1.976(2) . ?
Fe2 O24 1.9942(18) . ?
Fe2 N21 2.017(2) . ?
Fe2 O25 2.0258(17) . ?
Fe2 O22 2.464(2) . ?
N4 O1 1.381(2) . ?
N5 O2 1.407(3) . ?
N10 O4 1.384(3) . ?
N11 O5 1.397(2) . ?
N24 O21 1.379(2) . ?
N25 O22 1.404(3) . ?
N30 O24 1.386(3) . ?
N31 O25 1.397(2) . ?
O2 H2 0.90(3) . ?
O5 H42 1.89(3) . ?
O5 H34B 2.9601 . ?
O22 H22 0.80(3) . ?
O25 H41 1.97(3) . ?
O41 H2 1.68(3) . ?
O41 H41 0.76(3) . ?
O42 H22 1.75(4) . ?
O42 H42 0.79(3) . ?
