Pre-inverse-crowns: synthetic, structural and reactivity studies of alkali metal magnesiates primed for inverse crown formation
Martínez-Martínez, A. J.; Armstrong, D. R.; Conway, B.; Fleming, B. J.; Klett, J.; Kennedy, A. R.; Mulvey, R. E.; Robertson, S. D.; O'Hara, C. T.; Chemical Science 5 (2014) 771–; doi:10.1039/c3sc52816b

data_1513619
_publ_section_title
;
 Pre-inverse-crowns: synthetic, structural and reactivity studies of
 alkali metal magnesiates primed for inverse crown formation
;
_journal_issue                   2
_journal_name_full               'Chemical Science'
_journal_page_first              771
_journal_paper_doi               10.1039/c3sc52816b
_journal_volume                  5
_journal_year                    2014
_chemical_formula_moiety         'C62 H106 Mg2 N6 Na4'
_chemical_formula_sum            'C62 H106 Mg2 N6 Na4'
_chemical_formula_weight         1076.10
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.9437(6)
_cell_length_b                   16.1245(5)
_cell_length_c                   23.5059(8)
_cell_measurement_reflns_used    7209
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      73.6358
_cell_measurement_theta_min      3.2126
_cell_volume                     6422.0(4)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.34.46 (release 25-11-2010 CrysAlis171 .NET)
(compiled Nov 25 2010,17:55:46)
;
_computing_data_collection
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CrysAlisPro, Agilent Technologies,
Version 1.171.34.46 (release 25-11-2010 CrysAlis171 .NET)
(compiled Nov 25 2010,17:55:46)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.34.46 (release 25-11-2010 CrysAlis171 .NET)
(compiled Nov 25 2010,17:55:46)
;
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Oxford Diffraction Gemini S'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0352
_diffrn_reflns_av_unetI/netI     0.0534
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            24813
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        70.000
_diffrn_reflns_theta_max         69.999
_diffrn_reflns_theta_min         6.365
_exptl_absorpt_coefficient_mu    0.901
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.78524
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.34.46 (release 25-11-2010 CrysAlis171 .NET)
(compiled Nov 25 2010,17:55:46)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.113
_exptl_crystal_description       block
_exptl_crystal_F_000             2352
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.370
_refine_diff_density_min         -0.231
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.40(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     736
_refine_ls_number_reflns         9844
_refine_ls_number_restraints     177
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.0903
_refine_ls_R_factor_gt           0.0575
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0837P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1371
_refine_ls_wR_factor_ref         0.1523
_reflns_Friedel_coverage         0.950
_reflns_Friedel_fraction_full    0.998
_reflns_Friedel_fraction_max     0.998
_reflns_number_gt                6796
_reflns_number_total             9844
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c3sc52816b.txt
_cod_data_source_block           amc81naphtha_smart
_cod_database_code               1513619