Aluminacyclopropene: syntheses, characterization, and reactivity toward terminal alkynes.
Zhu, Hongping; Oswald, Rainer B; Fan, Hongjun; Roesky, Herbert W; Ma, Qingjun; Yang, Zhi; Schmidt, Hans-Georg; Noltemeyer, Mathias; Starke, Kerstin; Hosmane, Narayan S; Journal of the American Chemical Society 128 (2006) 5100–5108; doi:10.1021/ja057731p

data_4101433
_publ_section_title
;
 Aluminacyclopropene: syntheses, characterization, and reactivity
 toward terminal alkynes.
;
_journal_issue                   15
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              5100
_journal_page_last               5108
_journal_paper_doi               10.1021/ja057731p
_journal_volume                  128
_journal_year                    2006
_chemical_formula_sum            'C45 H53 Al N2'
_chemical_formula_weight         648.87
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 98.39(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.768(3)
_cell_length_b                   12.973(3)
_cell_length_c                   18.678(4)
_cell_measurement_reflns_used    5164
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      60.33
_cell_measurement_theta_min      3.43
_cell_volume                     3779.8(14)
_computing_cell_refinement       'Siemens SAINT (V6.31a,Siemens 2002)'
_computing_data_collection       'Proteum (Version 1.35)'
_computing_data_reduction        'Siemens SAINT (V6.31a,Siemens 2002)'
_computing_molecular_graphics    'Bruker AXS SHELXTL (V5.10)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean '5.602 pixels/mm'
_diffrn_measured_fraction_theta_full 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'BRUKER three cycle diffractometer'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  mirrors
_diffrn_radiation_source         'AXS-BRUKER rotating anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0288
_diffrn_reflns_av_sigmaI/netI    0.0257
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            17868
_diffrn_reflns_theta_full        60.33
_diffrn_reflns_theta_max         60.33
_diffrn_reflns_theta_min         3.43
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.703
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.140
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1400
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.236
_refine_diff_density_min         -0.242
_refine_diff_density_rms         0.032
_refine_ls_extinction_coef       0.00041(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.016
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     447
_refine_ls_number_reflns         5560
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0415
_refine_ls_R_factor_gt           0.0328
_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^)+(0.0330P)^2^+1.8149P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0766
_refine_ls_wR_factor_ref         0.0814
_reflns_number_gt                4745
_reflns_number_total             5560
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja057731psi20060220_024151.cif
_cod_data_source_block           compound7
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               4101433