C20H24N2O5
Croft, Anna K.; Foley, Mark K.; Horton, Peter N.; Hursthouse, Michael B.; Crystal Structure Report Archive  (2004) 876–; doi:

data_1519596
_publ_section_title
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 C20H24N2O5
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_journal_name_full               'Crystal Structure Report Archive'
_journal_page_first              876
_journal_year                    2004
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C20 H22 N2 O4, H2 O'
_chemical_formula_sum            'C20 H24 N2 O5'
_chemical_formula_weight         372.41
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 103.98(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.5936(18)
_cell_length_b                   7.2355(14)
_cell_length_c                   15.311(7)
_cell_measurement_reflns_used    2215
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      2.910
_cell_volume                     923.8(5)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_molecular_graphics    'ORTEP3 for Windows (Farrugia, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997b)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997a)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type
'Bruker-Nonius 95mm CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  '10cm confocal mirrors'
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0670
_diffrn_reflns_av_sigmaI/netI    0.0540
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            10760
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.08
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_T_max  0.9942
_exptl_absorpt_correction_T_min  0.9828
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2.10 (Sheldrick, G.M., 2003)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.339
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             396
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.244
_refine_diff_density_min         -0.203
_refine_diff_density_rms         0.050
_refine_ls_extinction_coef       0.030(6)
_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   1.054
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     255
_refine_ls_number_reflns         2285
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0573
_refine_ls_R_factor_gt           0.0468
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0540P)^2^+0.3002P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1083
_refine_ls_wR_factor_ref         0.1134
_reflns_number_gt                1991
_reflns_number_total             2285
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            eCrystal-876.cif
_cod_data_source_block           04src0621
_cod_depositor_comments
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Citation :
Croft, Anna K. and Foley, Mark K. and Horton, Peter N. and H
ursthouse, Michael B. (2004) 
University of Southampton, Crystal Structure Report Archive.

More at:
http://ecrystals.chem.soton.ac.uk/876/
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_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1519596