#------------------------------------------------------------------------------
#$Date: 2025-08-19 11:01:59 +0100 (Tue, 19 Aug 2025) $
#$Revision: 301802 $
#$URL: svn://www.crystallography.net/cod/cif/2/10/19/2101962.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2101962
loop_
_publ_author_name
'Nigovi\'c, Biljana'
'Antoli\'c, Snje\<zana'
'Koji\'c-Prodi\'c, Biserka'
'Kiralj, Rudolf'
'Magnus, Volker'
'Salopek, Branka'
_publ_section_title
;
 Correlation of structural and physico-chemical parameters with the
 bioactivity of alkylated derivatives of indole-3-acetic acid, a
 phytohormone (auxin)
;
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              94
_journal_page_last               111
_journal_paper_doi               10.1107/S0108768199006199
_journal_volume                  56
_journal_year                    2000
_chemical_formula_moiety         ' C12 H13 N O2'
_chemical_formula_sum            'C12 H13 N O2'
_chemical_formula_weight         203.24
_chemical_name_systematic
;
 4-ethyl-indole-3-acetic acid
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_cell_angle_alpha                90
_cell_angle_beta                 103.530(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.2880(10)
_cell_length_b                   7.4400(10)
_cell_length_c                   14.7760(10)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    297
_cell_measurement_theta_max      18
_cell_measurement_theta_min      6
_cell_volume                     992.72(19)
_computing_cell_refinement
'CAD4 (Enraf Nonius 1988) software <CELDIM> routine'
_computing_data_collection       'CAD4 (Enraf Nonius 1988) software'
_computing_data_reduction        'SDP (Frenz, 1982)'
_computing_molecular_graphics
;
PLATON93 (Spek, 1982, 1990) & ORTEP (Johnson, 1965), PLUTON93 (Spek 1991)
;
_computing_publication_material  'PLATON93 (Spek 1982, 1990)'
_computing_structure_refinement  'SHELX76 (Sheldrick, 1976)'
_computing_structure_solution    'SHELXS-86 (Sheldrick,1985, 1990)'
_diffrn_ambient_temperature      297
_diffrn_measurement_device       'Enraf-Nonius CAD4'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .018
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            2594
_diffrn_reflns_reduction_process
;
 ?
;
_diffrn_reflns_theta_max         25
_diffrn_reflns_theta_min         2
_diffrn_standards_decay_%        1.5
_diffrn_standards_interval_count 87
_diffrn_standards_interval_time  180
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    .09
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.360
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             432
_exptl_crystal_size_max          .45
_exptl_crystal_size_mid          .20
_exptl_crystal_size_min          .06
_refine_diff_density_max         .019
_refine_diff_density_min         -.018
_refine_ls_abs_structure_details
;
 ?
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_obs   .62
_refine_ls_hydrogen_treatment
;
all H-atom parameters refined
;
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     188
_refine_ls_number_reflns         999
_refine_ls_number_restraints     0
_refine_ls_R_factor_obs          .042
_refine_ls_shift/esd_max         .010
_refine_ls_shift/esd_mean        .010
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 0.8494/[\s^2^(Fo)+0.002474(Fo^2^)]'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_obs         .046
_reflns_number_observed          999
_reflns_number_total             1526
_reflns_observed_criterion       I>3\s(I)
_cod_data_source_file            ha0181.cif
_cod_data_source_block           4-Et-IAA
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w =
0.8494/[\s^2^(Fo)+0.002474(Fo^2^)]' was changed to 'calc'. New tag
'_refine_ls_weighting_details' was created. The value of the new tag
was set to 'w = 0.8494/[\s^2^(Fo)+0.002474(Fo^2^)]'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        992.72(8)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_original_formula_sum        ' C12 H13 N O2'
_cod_database_code               2101962
loop_
_symmetry_equiv_pos_as_xyz
x,y,z
1/2+x,1/2-y,1/2+z
-x,-y,-z
1/2-x,1/2+y,1/2-z
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
O1 .0331(13) .0699(18) .0287(11) .0197(13) .0025(10) -.0057(11)
O2 .0321(12) .0669(17) .0307(12) .0139(13) .0104(10) -.0028(11)
N1 .0419(17) .0455(18) .0225(13) .0048(14) .0056(12) .0015(12)
C2 .0314(17) .0426(19) .0301(15) .0038(16) .0124(13) .0000(14)
C3 .0296(15) .0255(16) .0275(14) -.0007(14) .0084(12) -.0014(13)
C4 .0299(17) .0265(17) .0338(16) -.0020(14) .0092(13) -.0016(12)
C5 .0312(19) .042(2) .0433(18) .0042(16) .0113(15) -.0041(16)
C6 .0272(18) .054(2) .0469(19) .0065(19) .0009(15) -.0053(17)
C7 .0367(19) .045(2) .0353(18) .0036(18) -.0043(16) -.0010(16)
C8 .0292(17) .0357(19) .0251(14) .0024(15) .0083(13) .0002(14)
C9 .0274(17) .0294(16) .0283(15) -.0004(14) .0072(13) -.0021(13)
C10 .0290(17) .037(2) .0334(16) .0010(17) .0099(13) .0006(14)
C11 .043(2) .065(3) .0365(19) .002(2) .0192(17) -.0015(17)
C31 .0273(15) .0255(17) .0299(15) .0010(14) .0057(12) -.0013(12)
C71 .0319(17) .0332(18) .0271(15) -.0010(15) .0053(13) -.0036(13)
loop_
_atom_site_label
_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_calc_flag
_atom_site_occupancy
O1 .0901(3) .9177(4) -.08980(10) .0447(8) Uani d 1.000
O2 .1554(2) .9165(3) .06430(10) .0427(8) Uani d 1.000
N1 .5646(3) .7035(4) .2082(2) .0370(9) Uani d 1.000
C2 .4349(4) .7608(5) .1510(2) .0338(10) Uani d 1.000
C3 .4470(3) .7643(4) .0610(2) .0272(9) Uani d 1.000
C4 .6774(3) .6834(4) -.0070(2) .0298(10) Uani d 1.000
C5 .8228(4) .6282(5) .0230(2) .0384(11) Uani d 1.000
C6 .8888(4) .5939(5) .1171(2) .0440(11) Uani d 1.000
C7 .8109(4) .6144(5) .1843(2) .0411(11) Uani d 1.000
C8 .3287(3) .8145(5) -.0238(2) .0297(10) Uani d 1.000
C9 .1852(3) .8867(4) -.0098(2) .0283(9) Uani d 1.000
C10 .6073(4) .7177(5) -.1083(2) .0327(10) Uani d 1.000
C11 .7026(5) .6843(7) -.1775(2) .0465(14) Uani d 1.000
C31 .5956(3) .7070(4) .0616(2) .0277(9) Uani d 1.000
C71 .6651(3) .6708(4) .1556(2) .0310(10) Uani d 1.000
H1 .576(4) .678(5) .270(3) .052(11) Uiso d 1.000
H2 .355(4) .786(4) .1734(19) .027(8) Uiso d 1.000
H5 .881(4) .610(5) -.020(2) .043(10) Uiso d 1.000
H6 .998(4) .561(5) .133(2) .052(10) Uiso d 1.000
H7 .858(4) .595(5) .247(2) .049(10) Uiso d 1.000
H11 .002(5) .972(6) -.078(3) .079(14) Uiso d 1.000
H81 .362(3) .916(4) -.059(2) .034(8) Uiso d 1.000
H82 .307(4) .708(5) -.072(3) .059(11) Uiso d 1.000
H101 .521(4) .642(4) -.127(2) .034(9) Uiso d 1.000
H102 .570(4) .848(5) -.114(2) .041(9) Uiso d 1.000
H111 .639(4) .713(5) -.245(3) .059(11) Uiso d 1.000
H112 .737(5) .564(7) -.172(3) .072(14) Uiso d 1.000
H113 .801(5) .765(6) -.163(3) .072(13) Uiso d 1.000
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
O O .0106 .0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N .0061 .0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H .0000 .0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
C C .0033 .0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_diffrn_standard_refln_index_h
_diffrn_standard_refln_index_k
_diffrn_standard_refln_index_l
-1 2 0
-3 2 6
-2 1 0
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_publ_flag
C2 N1 C71 108.9(3) no
N1 C2 C3 110.3(3) no
C2 C3 C8 127.3(3) no
C2 C3 C31 106.6(3) no
C8 C3 C31 126.1(3) no
C5 C4 C10 122.1(3) no
C5 C4 C31 117.1(3) no
C10 C4 C31 120.8(3) no
C4 C5 C6 122.6(3) no
C5 C6 C7 121.1(3) no
C6 C7 C71 117.2(3) no
C3 C8 C9 118.3(2) no
O1 C9 O2 122.1(3) no
O1 C9 C8 111.7(2) no
O2 C9 C8 126.2(3) no
C4 C10 C11 117.1(3) no
C3 C31 C4 135.0(3) no
C3 C31 C71 106.2(2) no
C4 C31 C71 118.9(3) no
N1 C71 C7 128.8(3) no
N1 C71 C31 108.0(3) no
C7 C71 C31 123.2(3) no
C9 O1 H11 109(3) no
C2 N1 H1 124(2) no
C71 N1 H1 127(2) no
N1 C2 H2 121.4(18) no
C3 C2 H2 128.2(19) no
C4 C5 H5 120(2) no
C6 C5 H5 117(2) no
C5 C6 H6 117.0(17) no
C7 C6 H6 121.9(17) no
C6 C7 H7 120(2) no
C71 C7 H7 123(2) no
C3 C8 H81 111.3(17) no
C3 C8 H82 111(2) no
C9 C8 H81 101.2(17) no
C9 C8 H82 109(2) no
H81 C8 H82 104(3) no
C4 C10 H101 108.8(17) no
C4 C10 H102 107.5(16) no
C11 C10 H101 106.7(19) no
C11 C10 H102 109.7(19) no
H101 C10 H102 107(3) no
C10 C11 H111 108(2) no
C10 C11 H112 110(3) no
C10 C11 H113 112(2) no
H111 C11 H112 112(3) no
H111 C11 H113 110(3) no
H112 C11 H113 105(4) no
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_publ_flag
O1 C9 1.320(3) no
O2 C9 1.211(3) no
N1 C2 1.368(5) no
N1 C71 1.369(4) no
C2 C3 1.361(4) no
C3 C8 1.508(4) no
C3 C31 1.443(4) no
C4 C5 1.382(5) no
C4 C10 1.508(4) no
C4 C31 1.413(4) no
C5 C6 1.405(4) no
C6 C7 1.367(5) no
C7 C71 1.386(5) no
C8 C9 1.496(4) no
C10 C11 1.521(5) no
C31 C71 1.414(4) no
O1 H11 .96(5) no
N1 H1 .91(4) no
C2 H2 .90(4) no
C5 H5 .94(3) no
C6 H6 1.02(4) no
C7 H7 .94(3) no
C8 H81 1.01(3) no
C8 H82 1.05(4) no
C10 H101 .97(3) no
C10 H102 1.03(4) no
C11 H111 1.06(4) no
C11 H112 .95(5) no
C11 H113 1.07(5) no
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
_geom_torsion_publ_flag
C71 N1 C2 C3 .8(4) no
C2 N1 C71 C7 178.6(3) no
C2 N1 C71 C31 -.6(4) no
N1 C2 C3 C8 178.3(3) no
N1 C2 C3 C31 -.7(4) no
C2 C3 C8 C9 6.7(5) no
C31 C3 C8 C9 -174.6(3) no
C2 C3 C31 C4 -179.3(4) no
C2 C3 C31 C71 .3(4) no
C8 C3 C31 C4 1.7(6) no
C8 C3 C31 C71 -178.7(3) no
C10 C4 C5 C6 -179.3(3) no
C31 C4 C5 C6 .8(5) no
C5 C4 C10 C11 1.5(5) no
C31 C4 C10 C11 -178.5(3) no
C5 C4 C31 C3 178.6(3) no
C5 C4 C31 C71 -.9(4) no
C10 C4 C31 C3 -1.4(5) no
C10 C4 C31 C71 179.1(3) no
C4 C5 C6 C7 -.2(6) no
C5 C6 C7 C71 -.2(5) no
C6 C7 C71 N1 -179.1(3) no
C6 C7 C71 C31 .0(17) no
C3 C8 C9 O1 -177.3(3) no
C3 C8 C9 O2 3.2(5) no
C3 C31 C71 N1 .2(4) no
C3 C31 C71 C7 -179.1(3) no
C4 C31 C71 N1 179.9(3) no
C4 C31 C71 C7 .6(5) no
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 ChemSpider 21140627
2 PubChem 44429230