Crystal structure of dimethyl (2S,3R,3aS,4S,5R,6R)-6-iodomethyl-4, 5-isopropylidenedioxy-hexahydro-pyrrolo[1,2-b]pyrazole-2,3-dicarboxylate, C~14~H~21~IN~2~O~6~
Frey, W.; Shaw, D.; Jégou, A.; Jäger, V.; Zeitschrift für Kristallographie - New Crystal Structures 221 (2006) 87–88; doi:

data_8101934
_publ_section_title
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Crystal structure of dimethyl (2S,3R,3aS,4S,5R,6R)-6-iodomethyl-4,
5-isopropylidenedioxy-hexahydro-pyrrolo[1,2-b]pyrazole-2,3-dicarboxylate, 
C~14~H~21~IN~2~O~6~
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_journal_issue                   1
_journal_name_full
'Zeitschrift f\"ur Kristallographie - New Crystal Structures'
_journal_page_first              87
_journal_page_last               88
_journal_volume                  221
_journal_year                    2006
_chemical_formula_sum            'C14 H21 I N2 O6'
_chemical_formula_weight         440.23
_chemical_melting_point          376.5(5)
_chemical_name_systematic
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dimethyl (2S,3R,3aS,4S,5R,6R)-6-iodomethyl-4,5-isopropylidenedioxy-
hexahydropyrrolo[1,2-b]pyrazole-2,3-dicarboxylate
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_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.7480(10)
_cell_length_b                   11.701(2)
_cell_length_c                   15.552(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      17.5
_cell_measurement_theta_min      13.5
_cell_volume                     1773.9(4)
_computing_cell_refinement       'Siemens P3/PC Data Collection System'
_computing_data_collection       'Siemens P3/PC Data Collection System'
_computing_data_reduction        'SHELXTL-plus, XDISK (Sheldrick, 1991)'
_computing_molecular_graphics    'SHELXTL-plus, XP (Sheldrick, 1991)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.907
_diffrn_measured_fraction_theta_max 0.907
_diffrn_measurement_device_type  'Nicolet P3'
_diffrn_measurement_method       Wyckoff
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0271
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            1629
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.18
_diffrn_standards_interval_count 50
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    1.835
_exptl_absorpt_correction_type   psi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.648
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             880
_exptl_crystal_size_max          1.0
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         1.553
_refine_diff_density_min         -1.294
_refine_diff_density_rms         0.085
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(6)
_refine_ls_extinction_coef       0.0047(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     209
_refine_ls_number_reflns         1629
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.0601
_refine_ls_R_factor_gt           0.0495
_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/[\s^2^(Fo^2^)+(0.0464P)^2^+7.2551P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1134
_refine_ls_wR_factor_ref         0.1204
_reflns_number_gt                1422
_reflns_number_total             1629
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            1267-1729.cff
_cod_data_source_block           wf469dsh
_cod_depositor_comments
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The following automatic conversions were performed:

'_chemical_melting_point' value '376-377 K' was changed to '376.5(5)'
- the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1569 2011-02-09 13:29:24Z adriana 
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_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               8101934