Ring-opening polymerisation of l- and rac-lactide using group 4 permethylpentalene aryloxides and alkoxides.
Turner, Zoë R; Lamb, Jessica V.; Robinson, Thomas P.; Mandal, Dipa; Buffet, Jean-Charles; O Hare, Dermot; Dalton transactions (Cambridge, England : 2003) 50 (2021) 4805–4818; doi:10.1039/d1dt00252j

data_7706871
_publ_section_title
;
 Ring-opening polymerisation of l- and rac-lactide using group 4
 permethylpentalene aryloxides and alkoxides.
;
_journal_issue                   14
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'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              4805
_journal_page_last               4818
_journal_paper_doi               10.1039/d1dt00252j
_journal_volume                  50
_journal_year                    2021
_chemical_formula_sum            'C30 H36 O2 Zr'
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_audit_update_record
;
2021-03-15 deposited with the CCDC.	2021-03-16 downloaded from the CCDC.
;
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CrysAlisPro, Agilent Technologies,
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET)
(compiled Jan 23 2012,18:06:46)
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CrysAlisPro, Agilent Technologies,
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET)
(compiled Jan 23 2012,18:06:46)
;
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CrysAlisPro, Agilent Technologies,
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET)
(compiled Jan 23 2012,18:06:46)
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_diffrn_reflns_av_unetI/netI     0.0184
_diffrn_reflns_Laue_measured_fraction_full 0.998
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_refine_ls_extinction_coef       0.00017(4)
_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_ref   1.034
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_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0376
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_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
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'w=1/[\s^2^(Fo^2^)+(0.0363P)^2^+1.5844P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
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_refine_ls_wR_factor_ref         0.0802
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4492
_reflns_number_total             5473
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1dt00252j2.cif
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_cod_depositor_comments
'Adding full bibliography for 7706871--7706877.cif.'
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7706871
_shelx_estimated_absorpt_t_min   0.534
_shelx_estimated_absorpt_t_max   0.738
_shelxl_version_number           2013-4
_shelx_res_checksum              76410
_shelx_hkl_checksum              88578