(5<i>R</i>/5<i>S</i>)-2,5-Diphenyl-7-[<i>trans</i>-(1<i>R</i>/1<i>S</i>,2<i>S</i>/2<i>R</i>)-2-phenylcyclohexyloxy]-2,3,5,8-tetrahydro-1<i>H</i>-1,2,4-triazolo[1,2-<i>a</i>]pyridazine-1,3-dione–Water (1/1): a Face-Selective Diels–Alder Reaction of 2-Alkoxy-1,3-butadiene
Santiago García-Granda; Rafael Santiago-García; Angel Suárez-Sobrino; Luis Angel López; Acta Crystallographica Section C 53 (1997) 1941–1943; doi:10.1107/S0108270197007853

data_2006746
_publ_section_title
;(5<i>R</i>/5<i>S</i>)-2,5-Diphenyl-7-[<i>trans</i>-(1<i>R</i>/1<i>S</i>,2<i>S</i>/2<i>R</i>)-2-phenylcyclohexyloxy]-2,3,5,8-tetrahydro-1<i>H</i>-1,2,4-triazolo[1,2-<i>a</i>]pyridazine-1,3-dione--Water
 (1/1): a Face-Selective Diels--Alder Reaction of 2-Alkoxy-1,3-butadiene
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1941
_journal_page_last               1943
_journal_paper_doi               10.1107/S0108270197007853
_journal_volume                  53
_journal_year                    1997
_chemical_formula_moiety         'C30 H29 N3 O3, H2 O'
_chemical_formula_sum            'C30 H31 N3 O4'
_chemical_formula_weight         497.58
_chemical_melting_point          444.15
_chemical_name_systematic
;
(8R/8S)-8-Phenyl-6-[trans-(1R/1S,2S/2R)-2-phenylcyclohexoxy]-5,8-dihydro-2H-
[1,2,4]-triazolo-[1,2-a]-pyridazin-1,3-dione-water(1/1).
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_audit_creation_method           SHELXL
_cell_angle_alpha                90.00
_cell_angle_beta                 107.16(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.972(6)
_cell_length_b                   10.557(4)
_cell_length_c                   18.596(14)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      10
_cell_volume                     2621(2)
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       'Nonius CAD4'
_diffrn_measurement_method       \w--2\q
_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  0.0230
_diffrn_reflns_av_sigmaI/netI    0.1166
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            4769
_diffrn_reflns_theta_max         25
_diffrn_reflns_theta_min         1.53
_diffrn_standards_decay_%        4.19
_diffrn_standards_interval_count 200
_diffrn_standards_interval_time  60
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.261
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.295
_refine_diff_density_min         -0.298
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.011
_refine_ls_goodness_of_fit_obs   1.175
_refine_ls_hydrogen_treatment    'H atoms riding with a common U~iso~'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     425
_refine_ls_number_reflns         4610
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.012
_refine_ls_restrained_S_obs      1.175
_refine_ls_R_factor_all          0.1900
_refine_ls_R_factor_obs          .0548
_refine_ls_shift/esd_max         0.001
_refine_ls_shift/esd_mean        0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0832P)^2^+0.2239P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1855
_refine_ls_wR_factor_obs         .1340
_reflns_number_observed          2023
_reflns_number_total             4611
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            ab1480.cif
_cod_data_source_block           lop175
_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.

'_geom_bond_publ_flag' value 'Yes' changed to 'yes' according
to '/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (9 times).

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_chemical_melting_point' value '171\%C' was changed to '444.15' - it
was converted from degrees Celsius(C) to Kelvins(K).

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

The following automatic conversions were performed:

'_chemical_melting_point' value '171\%C' was changed to '444.15' - it
was converted from degrees Celsius(C) to
Kelvins(K).

'_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.

'_geom_bond_publ_flag'
value 'Yes' changed to 'yes' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (9
times).

'_geom_angle_publ_flag' value 'Yes' changed to 'yes'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (15
times).

'_geom_torsion_publ_flag' value 'Yes' changed to 'yes'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (11
times).

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 =
1/[\s^2^(Fo^2^)+(0.0832P)^2^+0.2239P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w =
1/[\s^2^(Fo^2^)+(0.0832P)^2^+0.2239P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2006746