Bis(tert-butylamido)- and bis(arylamido)cyclodiphosph(iii)azane complexes of Ti, V, Zr and Hf: ligand substituent effects and coordination number
Moser, Daniel F.; Grocholl, Luke; Stahl, Lothar; Staples, Richard J.; Dalton Transactions  (2003) 1402–; doi:10.1039/b211009a

data_7012450
_publ_section_title
;
 Bis(tert-butylamido)- and bis(arylamido)cyclodiphosph(iii)azane
 complexes of Ti, V, Zr and Hf: ligand substituent effects and
 coordination number
;
_journal_issue                   7
_journal_name_full               'Dalton Transactions'
_journal_page_first              1402
_journal_paper_doi               10.1039/b211009a
_journal_year                    2003
_chemical_formula_sum            'C16 H36 Cl2 N4 P2 Zr'
_chemical_formula_weight         508.55
_chemical_name_systematic
; 
? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.921(2)
_cell_length_b                   15.129(3)
_cell_length_c                   16.331(4)
_cell_measurement_reflns_used    200
_cell_measurement_temperature    213(2)
_cell_measurement_theta_max      20.69
_cell_measurement_theta_min      4.52
_cell_volume                     2451.2(9)
_computing_cell_refinement       'SMART (SIEMENS, V4.033, 1994)'
_computing_data_collection       'ASTRO (SIEMENS, V4.033, 1994)'
_computing_data_reduction        'SAINT (SIEMENS, V4.035, 1994)'
_computing_molecular_graphics    'SHELXTL (SIEMENS, 1994, ver 5.04)'
_computing_publication_material  'CIFTAB (Sheldrick, 1993)'
_computing_structure_refinement  'SHELXL-93 (Sheldrick, 1993)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1990)'
_diffrn_ambient_temperature      213(2)
_diffrn_measurement_device       'Siemens P4/CCD'
_diffrn_measurement_method       '\f,(Phi) 0.3 deg'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0248
_diffrn_reflns_av_sigmaI/netI    0.0436
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            9072
_diffrn_reflns_theta_max         28.07
_diffrn_reflns_theta_min         1.83
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.805
_exptl_absorpt_correction_T_max  0.962314
_exptl_absorpt_correction_T_min  0.682695
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.378
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.373
_refine_diff_density_min         -1.039
_refine_diff_density_rms         0.073
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.016
_refine_ls_goodness_of_fit_obs   1.023
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         4921
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_restrained_S_obs      1.023
_refine_ls_R_factor_all          0.0487
_refine_ls_R_factor_obs          0.0412
_refine_ls_shift/esd_max         -0.001
_refine_ls_shift/esd_mean        0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0504P)^2^+1.9048P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1073
_refine_ls_wR_factor_obs         0.1017
_reflns_number_observed          4386
_reflns_number_total             4921
_reflns_observed_criterion       >2sigma(I)
_cod_data_source_file            b211009a.txt
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' 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^)+(0.0504P)^2^+1.9048P] 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^)+(0.0504P)^2^+1.9048P] where P=(Fo^2^+2Fc^2^)/3'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        2451.2(8)
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7012450