Stabilization of a Helical Water Chain in a Metal-Organic Host of a Trinuclear Schiff Base Complex
Chaitali Biswas; Michael G. B. Drew; Ashutosh Ghosh; Inorganic Chemistry 47 (2008) 4513–4519; doi:10.1021/ic8002542

data_4305054
_publ_section_title
;
Stabilization of a Helical Water Chain in a Metal-Organic Host of a
Trinuclear Schiff Base Complex
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              4513
_journal_page_last               4519
_journal_paper_doi               10.1021/ic8002542
_journal_volume                  47
_journal_year                    2008
_chemical_formula_sum            'C18 H38 Cu2 N8 Ni O8'
_chemical_formula_weight         680.36
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_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                 109.736(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.8433(3)
_cell_length_b                   14.1730(7)
_cell_length_c                   11.6532(5)
_cell_measurement_temperature    150(2)
_cell_volume                     1374.77(11)
_computing_cell_refinement       'Crysalis, Oxford Diffraction'
_computing_data_collection       'Crysalis, Oxford Diffraction'
_computing_data_reduction        'Crysalis, Oxford Diffraction'
_computing_molecular_graphics    PLATON(Spek,2004)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.970
_diffrn_measured_fraction_theta_max 0.970
_diffrn_measurement_device       'Oxford Diffaction X-Calibur System'
_diffrn_measurement_method       '321 frames, counting time 10 s.'
_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  0.0710
_diffrn_reflns_av_sigmaI/netI    0.0952
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            6920
_diffrn_reflns_theta_full        29.99
_diffrn_reflns_theta_max         29.99
_diffrn_reflns_theta_min         2.84
_exptl_absorpt_coefficient_mu    2.266
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.799
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'ABSPACK, Oxford Diffraction Ltd'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.644
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.08
_exptl_crystal_size_mid          0.06
_exptl_crystal_size_min          0.05
_refine_diff_density_max         1.655
_refine_diff_density_min         -1.091
_refine_diff_density_rms         0.179
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     189
_refine_ls_number_reflns         3890
_refine_ls_number_restraints     11
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0715
_refine_ls_R_factor_gt           0.0551
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
_refine_ls_weighting_details 
  w=1/[\s^2^(Fo^2^)+(0.0831P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1383
_refine_ls_wR_factor_ref         0.1466
_reflns_number_gt                2690
_reflns_number_total             3890
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic8002542-file003_1.cif
_cod_data_source_block           1
_cod_original_cell_volume        1374.77(10)
_cod_original_formula_sum        'C18 H38 Cu2 N8 Ni O8  '
_cod_database_code               4305054