High Capacity Hydrogen Adsorption in Cu(II) Tetracarboxylate Framework Materials: The Role of Pore Size, Ligand Functionalization, and Exposed Metal Sites
Xiang Lin; Irvin Telepeni; Alexander J. Blake; Anne Dailly; Craig M. Brown; Jason M. Simmons; Marco Zoppi; Gavin S. Walker; K. Mark Thomas; Timothy J. Mays; Peter Hubberstey; Neil R. Champness; Martin Schröder; Journal of the American Chemical Society 131 (2009) 2159–2171; doi:10.1021/ja806624j

data_4103904
_publ_section_title
;
 High Capacity Hydrogen Adsorption in Cu(II) Tetracarboxylate Framework
 Materials: The Role of Pore Size, Ligand Functionalization, and Exposed
 Metal Sites
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2159
_journal_page_last               2171
_journal_paper_doi               10.1021/ja806624j
_journal_volume                  131
_journal_year                    2009
_chemical_formula_moiety         'C26 H16 Cu2 O10, 6(C3 H7 N O) 4(H2 O)'
_chemical_formula_structural
'[Cu2 (C26 O8 H12) (H2 O)2] (C3 H7 N O)6 (H2 O)4'
_chemical_formula_sum            'C44 H66 Cu2 N6 O20'
_chemical_formula_weight         1126.11
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           139
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4 2'
_symmetry_space_group_name_H-M   'I 4/m m m'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'enCIFer editing of SHELXL97 CIF output'
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   18.852(3)
_cell_length_b                   18.852(3)
_cell_length_c                   27.417(6)
_cell_measurement_reflns_used    2447
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.95
_cell_measurement_theta_min      2.53
_cell_volume                     9744(3)
_computing_cell_refinement       'Bruker SAINT version 7.12A (Bruker, 2004)'
_computing_data_collection       'Bruker APEX2 Version 1.0-27 (Bruker, 2004)'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    ' ? '
_computing_publication_material
'enCIFer(Allen et al.,2004);PLATON(Spek,2003)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'SMART APEXII area detector'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  Si(111)
_diffrn_radiation_source         'Daresbury SRS Station 16.2SMX'
_diffrn_radiation_type           'synchrotron radiation'
_diffrn_radiation_wavelength     0.8640
_diffrn_reflns_av_R_equivalents  0.081
_diffrn_reflns_av_sigmaI/netI    0.041
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            17101
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.59
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.959
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.676
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS(2004)
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.535
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       column
_exptl_crystal_F_000             4720
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.03
_platon_squeeze_details
; 
The structure contains 56.4% of void space which has large regions of
diffuse electron density which could not be modeled as discrete solvent
molecules. SQUEEZE was used to calculate and account for the electron
contribution from disordered solvent molecules, 1804 electrons per 
unit cell, assigned as 8 DMF and 12 water molecules per formula unit.
;
_refine_diff_density_max         0.62
_refine_diff_density_min         -0.52
_refine_diff_density_rms         0.08
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.04
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     103
_refine_ls_number_reflns         1384
_refine_ls_number_restraints     23
_refine_ls_restrained_S_all      1.18
_refine_ls_R_factor_all          0.0821
_refine_ls_R_factor_gt           0.0676
_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^)+(0.138P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.181
_refine_ls_wR_factor_ref         0.192
_reflns_number_gt                1047
_reflns_number_total             1386
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            ja806624j_si_002_6.cif
_cod_data_source_block           NOTT109
_cod_database_code               4103904