Catalytic hydroacetylenation of carbodiimides with homoleptic alkaline earth hexamethyldisilazides.
Arrowsmith, Merle; Crimmin, Mark R.; Hill, Michael S.; Lomas, Sarah L.; Heng, Myra Sae; Hitchcock, Peter B.; Kociok-Köhn, Gabriele; Dalton transactions (Cambridge, England : 2003) 43 (2014) 14249–14256; doi:10.1039/c3dt53542h

data_7032516
_publ_section_title
;
 Catalytic hydroacetylenation of carbodiimides with homoleptic alkaline
 earth hexamethyldisilazides.
;
_journal_issue                   38
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              14249
_journal_page_last               14256
_journal_paper_doi               10.1039/c3dt53542h
_journal_volume                  43
_journal_year                    2014
_chemical_formula_moiety         'C33 H40 N2, C6 H6'
_chemical_formula_sum            'C39 H46 N2'
_chemical_formula_weight         542.78
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 115.4780(4)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   22.5370(2)
_cell_length_b                   12.92390(10)
_cell_length_c                   25.3579(3)
_cell_measurement_reflns_used    60488
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.028
_cell_measurement_theta_min      2.910
_cell_volume                     6667.62(11)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor, 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
;
 DENZO-SCALEPACK Z. Otwinowski and W. Minor, " 
 Processing of X-ray Diffraction Data Collected in Oscillation Mode ", 
 Methods in Enzymology, Volume 276: Macromolecular Crystallography, 
 part A, p.307-326, 1997,C.W. Carter, Jr. & R. M. Sweet, Eds., Academic Press.
;
_computing_molecular_graphics
'ORTEP3 for Windows - Farrugia, L. J. J. Appl. Crystallogr. 1997, 30, 565'
_computing_publication_material
;
 'WinGX publication routines, Farrugia, 
 L. J., J. Appl. Crystallogr., 1999, 32, 837-838
;
_computing_structure_refinement
;
 SHELXL-2013 (Sheldrick, 2013)
 Sheldrick GM (2008) Acta Crystallogr A64:112--122 and 
 C. B. H\"ubschle, G. M. Sheldrick and B. Dittrich
 ShelXle: a Qt graphical user interface for SHELXL
 J. Appl. Cryst., 44, (2011) 1281-1284.
;
_computing_structure_solution
; 
 SIR97- Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C. , 
 Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R. 
 (1999) J. Appl. Cryst. 32, 115-119
;
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.974
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Nonius Kappa CCD'
_diffrn_measurement_method       '498 1.3 degree images with \f and \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_unetI/netI     0.0678
_diffrn_reflns_Laue_measured_fraction_full 0.974
_diffrn_reflns_Laue_measured_fraction_max 0.990
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            48040
_diffrn_reflns_point_group_measured_fraction_full 0.974
_diffrn_reflns_point_group_measured_fraction_max 0.990
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.096
_diffrn_reflns_theta_min         3.560
_exptl_absorpt_coefficient_mu    0.062
_exptl_absorpt_correction_T_max  0.989
_exptl_absorpt_correction_T_min  0.866
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
multi-scan from symmetry-related measurements 
 Sortav (Blessing 1995)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.081
_exptl_crystal_description       prism
_exptl_crystal_F_000             2352
_exptl_crystal_size_max          0.650
_exptl_crystal_size_mid          0.600
_exptl_crystal_size_min          0.300
_refine_diff_density_max         0.175
_refine_diff_density_min         -0.199
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.088
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     387
_refine_ls_number_reflns         48040
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.088
_refine_ls_R_factor_all          0.0826
_refine_ls_R_factor_gt           0.0645
_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^)+(0.0236P)^2^+7.3167P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1364
_refine_ls_wR_factor_ref         0.1473
_reflns_Friedel_coverage         0.000
_reflns_number_gt                38817
_reflns_number_total             48040
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c3dt53542h.txt
_cod_data_source_block           k13msh35
_cod_depositor_comments
'Adding full bibliography for 7032514--7032517.cif.'
_cod_database_code               7032516
_shelx_estimated_absorpt_t_min   0.961
_shelx_estimated_absorpt_t_max   0.982
_shelxl_version_number           2013-4
_shelx_res_checksum              94641
_shelx_hkl_checksum              58056