Cause of hydration/dehydration in condensed organic materials: synthesis of hydrophobic pores.
Febles, Martín; Pérez, Cirilo; Foces-Foces, Concepción; Rodríguez, Matías L; Pérez-Hernández, Natalia; Morales, Ezequiel Q.; Martín, Julio D; Organic letters 6 (2004) 877–880; doi:10.1021/ol036335d

data_1506898
_publ_section_title
;
 Cause of hydration/dehydration in condensed organic materials: synthesis
 of hydrophobic pores.
;
_journal_issue                   6
_journal_name_full               'Organic letters'
_journal_page_first              877
_journal_page_last               880
_journal_paper_doi               10.1021/ol036335d
_journal_volume                  6
_journal_year                    2004
_chemical_formula_moiety         'C15 H20 O5 + 1/4 C H4'
_chemical_formula_sum            'C15.25 H21 O5'
_chemical_formula_weight         284.32
_chemical_name_systematic
;
 (+/-)-7,7-Dicyclopropyl-6-oxabicyclo[3.2.1]octane-1,5-dicarboxylic acid 
methane solvate
;
_space_group_IT_number           2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                96.32(3)
_cell_angle_beta                 105.32(4)
_cell_angle_gamma                110.10(14)
_cell_formula_units_Z            4
_cell_length_a                   8.487(9)
_cell_length_b                   12.456(8)
_cell_length_c                   16.095(8)
_cell_measurement_temperature    170(2)
_cell_volume                     1503(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare et al., 1999)'
_diffrn_ambient_temperature      170(2)
_diffrn_measured_fraction_theta_full 0.964
_diffrn_measured_fraction_theta_max 0.964
_diffrn_measurement_device_type  'Nonius Kappa CCD diffractometer'
_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    0.0245
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            7417
_diffrn_reflns_theta_full        28.60
_diffrn_reflns_theta_max         28.60
_diffrn_reflns_theta_min         1.35
_exptl_absorpt_coefficient_mu    0.093
_exptl_absorpt_correction_T_max  0.9725
_exptl_absorpt_correction_T_min  0.9680
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.257
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'irregular shape'
_exptl_crystal_F_000             610
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         1.382
_refine_diff_density_min         -0.487
_refine_diff_density_rms         0.141
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     380
_refine_ls_number_reflns         7417
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0714
_refine_ls_R_factor_gt           0.0675
_refine_ls_shift/su_max          0.011
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1387P)^2^+1.1481P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2150
_refine_ls_wR_factor_ref         0.2207
_reflns_number_gt                6865
_reflns_number_total             7417
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol036335dsi20031202_045109.cif
_cod_data_source_block           1e-CH4
_cod_original_cell_volume        1503(2)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1506898