A stable alkyl hydride of a first row transition metal
MacAdams, Leonard A.; Buffone, Gerald P.; Incarvito, Christopher D.; Golen, James A.; Rheingold, Arnold L.; Theopold, Klaus H.; Chemical Communications (Cambridge, United Kingdom)  (2003) 1164–1165; doi:10.1039/b301943h

data_7113623
_publ_section_title
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 A stable alkyl hydride of a first row transition metal
;
_journal_coden_ASTM              CHCOFS
_journal_issue                   10
_journal_name_full
;
 Chemical Communications (Cambridge, United Kingdom)
;
_journal_page_first              1164
_journal_page_last               1165
_journal_paper_doi               10.1039/b301943h
_journal_year                    2003
_chemical_formula_sum            'C46 H62 Cr2 N4 Si'
_chemical_formula_weight         803.09
_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                 106.0100(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.33630(10)
_cell_length_b                   20.9724(3)
_cell_length_c                   17.6709(3)
_cell_measurement_reflns_used    5340
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.20
_cell_measurement_theta_min      2.44
_cell_volume                     4394.52(11)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0462
_diffrn_reflns_av_sigmaI/netI    0.0457
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            16789
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.54
_exptl_absorpt_coefficient_mu    0.557
_exptl_absorpt_correction_T_max  0.9211
_exptl_absorpt_correction_T_min  0.8734
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            red-brown
_exptl_crystal_density_diffrn    1.214
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1712
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.687
_refine_diff_density_min         -0.563
_refine_diff_density_rms         0.098
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.539
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     490
_refine_ls_number_reflns         7554
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.539
_refine_ls_R_factor_all          0.0898
_refine_ls_R_factor_gt           0.0687
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1912
_refine_ls_wR_factor_ref         0.2137
_reflns_number_gt                6069
_reflns_number_total             7554
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             7103660
_cod_data_source_file            b301943h.txt
_cod_data_source_block           len16
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_cell_volume        4394.52(10)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7113623