The syntheses, structures and reactivity of bis(tert-butylcyclopentadienyl)molybdenum derivatives: nitrogen alkylation of an η2-acetonitrile ligand and influence of the chalcogen on the barrier to inversion of chalcogenoether adducts
Shin, Jun Ho; Savage, William; Murphy, Vincent J.; Bonanno, Jeffrey B.; Churchill, David G.; Parkin, Gerard; Journal of the Chemical Society, Dalton Transactions  (2001) 1732–; doi:10.1039/b100372k

data_7010557
_publ_section_title
;
 The syntheses, structures and reactivity of
 bis(tert-butylcyclopentadienyl)molybdenum derivatives: nitrogen
 alkylation of an \h2-acetonitrile ligand and influence of the
 chalcogen on the barrier to inversion of chalcogenoether adducts
;
_journal_issue                   11
_journal_name_full
'Journal of the Chemical Society, Dalton Transactions'
_journal_page_first              1732
_journal_paper_doi               10.1039/b100372k
_journal_year                    2001
_chemical_formula_sum            'C24 H36 Cl6 I Mo N'
_chemical_formula_weight         774.08
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 92.110(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.9300(10)
_cell_length_b                   20.396(2)
_cell_length_c                   18.2470(10)
_cell_measurement_reflns_used    33
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      15.04
_cell_measurement_theta_min      4.60
_cell_volume                     3321.2(5)
_computing_cell_refinement       'Siemens XSCANS'
_computing_data_collection       'Siemens XSCANS'
_computing_data_reduction        'Siemens SHELXTL'
_computing_molecular_graphics    'Siemens SHELXTL'
_computing_publication_material  'Siemens SHELXTL'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measurement_device       'Siemens P4'
_diffrn_measurement_method       '\w 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  0.0858
_diffrn_reflns_av_sigmaI/netI    0.0554
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -2
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            5695
_diffrn_reflns_theta_max         22.50
_diffrn_reflns_theta_min         2.00
_diffrn_standards_decay_%        4.36
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    1.821
_exptl_absorpt_correction_T_max  0.3657
_exptl_absorpt_correction_T_min  0.2048
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            Orange
_exptl_crystal_density_diffrn    1.548
_exptl_crystal_F_000             1536
_refine_diff_density_max         0.813
_refine_diff_density_min         -0.757
_refine_diff_density_rms         0.092
_refine_ls_extinction_coef       0.0021(3)
_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_all   1.036
_refine_ls_goodness_of_fit_obs   1.061
_refine_ls_matrix_type           full
_refine_ls_number_parameters     299
_refine_ls_number_reflns         4309
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.275
_refine_ls_restrained_S_obs      1.061
_refine_ls_R_factor_all          0.0776
_refine_ls_R_factor_obs          0.0506
_refine_ls_shift/esd_max         0.000
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0779P)^2^+8.1225P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1752
_refine_ls_wR_factor_obs         0.1287
_reflns_number_observed          3369
_reflns_number_total             4316
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            b100372k.txt
_cod_data_source_block           jun10
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc
w=1/[\s^2^(Fo^2^)+(0.0779P)^2^+8.1225P] where P=(Fo^2^+2Fc^2^)/3' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to
'w=1/[\s^2^(Fo^2^)+(0.0779P)^2^+8.1225P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7010557