Pure Appl. Chem., 2010, Vol. 82, No. 4, pp. 891-904
http://dx.doi.org/10.1351/PAC-CON-09-09-04
Published online 2010-03-13
Toward carbyne: Synthesis and stability of really long polyynes
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- 69. Crystallographic data for Ph[4] (C20H10), MW = 250.28; monoclinic crystal system; space group P21/n (an alternate setting of P21/c [No. 14]), a = 10.7824(12), b = 3.9194(5), c = 16.901(2) Å; σ = 106.0485(17)º; V = 686.39(14) Å3; Z = 2; ρcalcd = 1.211 g cm–3; μ = 0.069 mm–1; λ = 0.71 073 Å; T = –80 °C; 2θmax = 52.80º; total data collected = 4905; R1 = 0.0361 for 1179 observed reflections with [Fo2 ≥ 2σ(Fo2)]; wR2 = 0.1041 for 92 variables and 1404 unique reflections with [Fo2 ≥ –3σ(Fo2)]; residual electron density = 0.130 and –0.140 e Å–3.
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- 71. Crystallographic data for Tr*[4] (C94H126_0.5C4H10O), MW = 1293.01; monoclinic crystal system; space group P21/n (an alternate setting of P21/c [No. 14]); a = 28.705(9), b = 10.621(3), c = 29.280(9) Å; β = 92.763(4)º; V = 8916(5) Å3; Z = 4; ρcalcd = 0.963 g cm–3; μ = 0.054 mm–1; ? = 0.71 073 Å; T = –100 °C; 2θmax = 50.50º; total data collected = 61 984; R1 = 0.0584 for 16 159 observed reflections with [Fo2 ≥ –2σ(Fo2)]; wR2 = 0.1699 for 962 variables and 16 159 unique reflections with [Fo2 ≥ –3σ(Fo2)], and 14 restraints [The disordered diethylether solvent molecules had the following distance restraints applied: O–C restrained to be 1.430(2) Å; C–C, 1.530(2) Å; C···C, 2.340(4) Å; O···C, 2.420(4) Å]; residual electron density = 0.376 and –0.297 e Å–3.
- 72. CCDC Nos: 745804 (Ph[4]), 729158 (tBu[4]), 660940 (Ad[4]), 265860 (TIPS[4]), and 745805 (Tr*[4]).