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33847262877
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3 remains unchanged in this step.
-
3 remains unchanged in this step.
-
-
-
-
23
-
-
33847291692
-
-
2.
-
2.
-
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-
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24
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20444447581
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4i See also: Wu, F.; Jordan, R. F. Organometallics 2005, 24, 2688-2697.
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4i See also: Wu, F.; Jordan, R. F. Organometallics 2005, 24, 2688-2697.
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25
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33847320504
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1H NMR spectrum of 1 contains five equal-intensity Si-H resonances with complex line shapes. Two (at δ 4.50 and 4.75), due to hydrogen atoms that bridge between Si and Ti, are strongly coupled to all four phosphorus nuclei. The δ 4.50 resonance is coupled to a Si-H resonance at δ 6.25, and the δ 4.75 resonance is coupled to a Si-H resonance at δ 6.35. The H-H coupling constants of 14.5 Hz between these sites are consistent with gem H-Si-H couplings. The fifth Si-H resonance at δ 3.27 is a broad singlet and is assigned to the single Si-H group on the central silicon atom of the trisilane unit.
-
1H NMR spectrum of 1 contains five equal-intensity Si-H resonances with complex line shapes. Two (at δ 4.50 and 4.75), due to hydrogen atoms that bridge between Si and Ti, are strongly coupled to all four phosphorus nuclei. The δ 4.50 resonance is coupled to a Si-H resonance at δ 6.25, and the δ 4.75 resonance is coupled to a Si-H resonance at δ 6.35. The H-H coupling constants of 14.5 Hz between these sites are consistent with gem H-Si-H couplings. The fifth Si-H resonance at δ 3.27 is a broad singlet and is assigned to the single Si-H group on the central silicon atom of the trisilane unit.
-
-
-
-
26
-
-
33847315459
-
-
2 = 0.0779 for 433 variables and 5847 unique data.
-
2 = 0.0779 for 433 variables and 5847 unique data.
-
-
-
-
27
-
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0000702952
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