Dinuclear Molybdenum and Tungsten Complexes with Metal-Metal Triple Bonds Supported by p-tert-Butylcalix[4]arene Ligands
Malcolm H. Chisholm; Kirsten Folting; William E. Streib; De-Dong Wu; Inorganic Chemistry 38 (1999) 5219–5229; doi:10.1021/ic990513a

data_5000372
_publ_section_title
;
Dinuclear Molybdenum and Tungsten Complexes with Metal-Metal Triple Bonds
Supported by p-tert-Butylcalix[4]arene Ligands
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              5219
_journal_page_last               5229
_journal_paper_doi               10.1021/ic990513a
_journal_volume                  38
_journal_year                    1999
_chemical_formula_moiety         '(C92 H120 Mo2 N2 O8), 4(C4 H8 O)'
_chemical_formula_sum            'C108 H152 Mo2 N2 O12'
_chemical_formula_weight         1862.28
_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'
_cell_angle_alpha                90
_cell_angle_beta                 94.035(16)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   13.105(4)
_cell_length_b                   18.631(6)
_cell_length_c                   20.543(6)
_cell_measurement_reflns_used    128
_cell_measurement_temperature    104
_cell_measurement_theta_max      14.05
_cell_measurement_theta_min      10.05
_cell_volume                     5003(3)
_diffrn_ambient_temperature      104
_diffrn_detector_area_resol_mean ?
_diffrn_measured_fraction_theta_full 0
_diffrn_measured_fraction_theta_max 1
_diffrn_measurement_device_type  'refurbished Picker diffractometer'
_diffrn_measurement_method       '\q/2\q scans'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.058
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       4
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            9944
_diffrn_reflns_theta_full        0
_diffrn_reflns_theta_max         22.532
_diffrn_reflns_theta_min         3.11638
_diffrn_standards_decay_%        1.7
_diffrn_standards_interval_count 300
_diffrn_standards_number         4
_exptl_absorpt_coefficient_mu    0.3099
_exptl_absorpt_correction_T_max  ?
_exptl_absorpt_correction_T_min  ?
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    1.236
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'trigonal prism'
_exptl_crystal_F_000             1988
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.95
_refine_diff_density_min         -0.93
_refine_ls_abs_structure_details none
_refine_ls_abs_structure_Flack   ?
_refine_ls_extinction_coef       0.1697E-7
_refine_ls_extinction_expression
;
Larson, A. C. (1967).  Acta Cryst. 23, p. 664.  Eq. (3)
;
_refine_ls_extinction_method     Zachariasen
_refine_ls_goodness_of_fit_ref   1.5027
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     997
_refine_ls_number_reflns         9943
_refine_ls_R_factor_gt           0.067
_refine_ls_shift/su_max          0.0683
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     w^-1^=\s^2^(F)+(.07F)^2^
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.0662
_reflns_number_gt                7048
_reflns_number_total             8366
_reflns_threshold_expression     F^2^>2.33\s(F^2^)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               5000372