Structural snapshots of an Al-Cu bond-mediated transformation of terminal acetylenes.
Liu, Han-Ying; Neale, Samuel E.; Hill, Michael S.; Mahon, Mary F.; McMullin, Claire L.; Chemical science 14 (2023) 2866–2876; doi:10.1039/d3sc00240c

data_1568438
_publ_section_title
;
 Structural snapshots of an Al-Cu bond-mediated transformation of terminal
 acetylenes.
;
_journal_issue                   11
_journal_name_full               'Chemical science'
_journal_page_first              2866
_journal_page_last               2876
_journal_paper_doi               10.1039/d3sc00240c
_journal_volume                  14
_journal_year                    2023
_chemical_formula_moiety         'C51 H88 Al Cu N4 Si4'
_chemical_formula_sum            'C51 H88 Al Cu N4 Si4'
_chemical_formula_weight         960.13
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2022-02-07
_audit_creation_method
;
Olex2 1.5
(compiled 2021.12.09 svn.r5202d8cf for OlexSys, GUI svn.r6439)
;
_audit_update_record
;
2023-01-04 deposited with the CCDC.	2023-02-15 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 93.689(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.6138(3)
_cell_length_b                   20.7585(4)
_cell_length_c                   22.1325(4)
_cell_measurement_reflns_used    35180
_cell_measurement_temperature    150.00(10)
_cell_measurement_theta_max      30.0060
_cell_measurement_theta_min      3.2130
_cell_volume                     5783.2(2)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46 (Rigaku OD, 2018)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2014/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT  (Sheldrick, 2015)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      150.00(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 8.0734
_diffrn_detector_type            EosS2
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.920
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'New Xcalibur, EosS2'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0315
_diffrn_reflns_av_unetI/netI     0.0263
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.920
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            98784
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.920
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.302
_diffrn_reflns_theta_min         2.936
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.510
_exptl_absorpt_correction_T_max  0.959
_exptl_absorpt_correction_T_min  0.937
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)
Analytical numeric absorption correction using a multifaceted crystal
			model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.103
_exptl_crystal_description       block
_exptl_crystal_F_000             2080
_exptl_crystal_size_max          0.882
_exptl_crystal_size_mid          0.689
_exptl_crystal_size_min          0.557
_refine_diff_density_max         0.497
_refine_diff_density_min         -0.368
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     613
_refine_ls_number_reflns         15956
_refine_ls_number_restraints     100
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0509
_refine_ls_R_factor_gt           0.0348
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0403P)^2^+2.6631P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0844
_refine_ls_wR_factor_ref         0.0920
_reflns_Friedel_coverage         0.000
_reflns_number_gt                12835
_reflns_number_total             15956
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3sc00240c2.cif
_cod_data_source_block           e21msh02
_cod_depositor_comments
'Adding full bibliography for 1568428--1568438.cif.'
_cod_database_code               1568438
_shelxl_version_number           2014-3
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Restrained distances
 Si3-C48 \\sim Si3A-C48A \\sim Si3-C46 \\sim Si3A-C46A \\sim Si3A-C47A \\sim
Si3-C47
 with sigma of 0.005
 Si3A-C43 \\sim Si3-C43
 with sigma of 0.005
3. Uiso/Uaniso restraints and constraints
C47 \\sim C47A \\sim Si3A \\sim Si3 \\sim C46A \\sim C46 \\sim C48A \\sim C48:
within 2A with sigma of 0.02 and sigma for terminal atoms of 0.01 within 2A
4. Others
 Fixed Sof: Si3(0.5) C46(0.5) H46A(0.5) H46B(0.5) H46C(0.5) C47(0.5) H47A(0.5)
 H47B(0.5) H47C(0.5) C48(0.5) H48A(0.5) H48B(0.5) H48C(0.5) Si3A(0.5) C46A(0.5)
 H46D(0.5) H46E(0.5) H46F(0.5) C47A(0.5) H47D(0.5) H47E(0.5) H47F(0.5)
 C48A(0.5) H48D(0.5) H48E(0.5) H48F(0.5)
5.a Ternary CH refined with riding coordinates:
 C7(H7), C10(H10), C25(H25), C28(H28), C32(H32), C39(H39)
5.b Secondary CH2 refined with riding coordinates:
 C15(H15A,H15B), C16(H16A,H16B)
5.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C5(H5), C21(H21), C22(H22), C23(H23)
5.d Idealised Me refined as rotating group:
 C8(H8A,H8B,H8C), C9(H9A,H9B,H9C), C11(H11A,H11B,H11C), C12(H12A,H12B,H12C),
 C13(H13A,H13B,H13C), C14(H14A,H14B,H14C), C17(H17A,H17B,H17C), C18(H18A,H18B,
 H18C), C26(H26A,H26B,H26C), C27(H27A,H27B,H27C), C29(H29A,H29B,H29C), C30(H30A,
 H30B,H30C), C33(H33A,H33B,H33C), C34(H34A,H34B,H34C), C36(H36A,H36B,H36C),
 C38(H38A,H38B,H38C), C40(H40A,H40B,H40C), C41(H41A,H41B,H41C), C49(H49A,H49B,
 H49C), C50(H50A,H50B,H50C), C51(H51A,H51B,H51C), C46(H46A,H46B,H46C), C47(H47A,
 H47B,H47C), C48(H48A,H48B,H48C), C46A(H46D,H46E,H46F), C47A(H47D,H47E,H47F),
 C48A(H48D,H48E,H48F)
;
_shelx_res_checksum              44066
_shelx_hkl_checksum              96862