A combined stretching-tilting mechanism produces negative, zero and positive linear thermal expansion in a semi-flexible Cd(II)-MOF
Prem Lama; Raj Kumar Das; Vincent J. Smith; Leonard J. Barbour; Chem.Commun. 50 (2014) 6464–; doi:10.1039/C4CC02634A

data_7113968
_publ_section_title
;
 A combined stretching-tilting mechanism produces negative, zero and
 positive linear thermal expansion in a semi-flexible Cd(II)-MOF
;
_journal_name_full               Chem.Commun.
_journal_page_first              6464
_journal_paper_doi               10.1039/C4CC02634A
_journal_volume                  50
_journal_year                    2014
_chemical_formula_moiety         'C53 H58 Cd2 N7 O19'
_chemical_formula_sum            'C53 H58 Cd2 N7 O19'
_chemical_formula_weight         1321.86
_chemical_name_common            1
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_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                75.021(1)
_cell_angle_beta                 76.614(1)
_cell_angle_gamma                88.221(1)
_cell_formula_units_Z            1
_cell_length_a                   10.2804(9)
_cell_length_b                   12.0976(11)
_cell_length_c                   12.6532(11)
_cell_measurement_reflns_used    573
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      26.04
_cell_measurement_theta_min      1.71
_cell_volume                     1478.2(2)
_computing_cell_refinement       'SAINT (Bruker, 2009)'
_computing_data_collection       'APEX2 (Bruker, 2009)'
_computing_data_reduction        SAINT
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker Apex DUO CCD area-detector'
_diffrn_measurement_method       \w
_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  0.0255
_diffrn_reflns_av_sigmaI/netI    0.0350
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            13055
_diffrn_reflns_theta_full        26.04
_diffrn_reflns_theta_max         26.04
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    0.796
_exptl_absorpt_correction_T_max  0.9155
_exptl_absorpt_correction_T_min  0.6417
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.485
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             673
_exptl_crystal_size_max          0.612
_exptl_crystal_size_mid          0.198
_exptl_crystal_size_min          0.113
_refine_diff_density_max         0.613
_refine_diff_density_min         -0.472
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.007
_refine_ls_hydrogen_treatment    refU
_refine_ls_matrix_type           full
_refine_ls_number_parameters     441
_refine_ls_number_reflns         5817
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0297
_refine_ls_R_factor_gt           0.0270
_refine_ls_shift/su_max          0.056
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0422P)^2^+0.5107P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0702
_refine_ls_wR_factor_ref         0.0722
_reflns_number_gt                5388
_reflns_number_total             5817
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4cc02634a3.cif
_cod_data_source_block           200
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7113968