Influence of the Steric Demand of Coligands on the Catalytic Activity of Nickel(II) Complexes in the Copolymerization of Ethene and Carbon Monoxide

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left"><i>P</i>-ligand</td><td align="center">ligand cone angle <svg height="11.6875" id="M9" style="vertical-align:-0.20474pt" version="1.1" viewbox="0 0 12.6875 11.6875" width="12.6875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.363)"><path d="M377 665q131 0 224.5 -93t93.5 -239q0 -157 -95 -252.5t-237 -95.5q-136 0 -227.5 94.5t-91.5 237.5q0 141 91 244.5t242 103.5zM355 630q-88 0 -148.5 -75t-60.5 -210q0 -141 67 -232t172 -91q89 0 148.5 72.5t59.5 209.5q0 154 -66.5 240t-171.5 86zM502 225h-31
q-5 50 -14.5 62t-45.5 12h-85q-36 0 -45.5 -12t-14.5 -62h-31v217h31q5 -51 14.5 -62.5t45.5 -10.5h85q36 0 45.5 11.5t14.5 61.5h31v-217z" id="x398"></path></g>
</svg>/°</td><td align="center">Electronic parameter <svg height="7.9499998" id="M10" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 9.1625004 7.9499998" width="9.1625004" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.675)"><path d="M509 373q0 -52 -42.5 -118.5t-124.5 -159.5l-94 -107h-27q-22 209 -78 342q-21 48 -41 48q-18 0 -63 -62l-22 21q77 111 125 111q30 0 52 -21.5t38 -75.5q37 -130 52 -285q48 62 74.5 99.5t53.5 87t27 76.5q0 43 -17 60q-5 5 -5 15q0 17 12.5 30.5t28.5 13.5
q21 0 36 -22.5t15 -52.5z" id="x1D708"></path></g>
</svg>/cm<sup>−1</sup></td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left">PPh<sub>3 </sub></td><td align="center">145</td><td align="center">2068.9</td></tr><tr><td align="left">P<i>n</i>BuPh<sub>2</sub></td><td align="center">141</td><td align="center">2066.1</td></tr><tr><td align="left">P<i>n</i>Bu<sub>2</sub>Ph</td><td align="center">136</td><td align="center">2063.2</td></tr><tr><td align="left">P<i>n</i>Bu<sub>3</sub></td><td align="center">132</td><td align="center">2060.3</td></tr><tr><td align="left">P(OEt)<sub>3</sub></td><td align="center">109</td><td align="center">2076.3</td></tr><tr><td align="left">PCyPh<sub>2</sub></td><td align="center">153</td><td align="center">2064.8</td></tr><tr><td align="left">PCy<sub>3</sub></td><td align="center">170</td><td align="center">2056.4</td></tr><tr><td align="left">P(o-Tol)<sub>3</sub></td><td align="center">194</td><td align="center">2066.6</td></tr><tr><td align="left">P(OPh)<sub>3</sub></td><td align="center">128</td><td align="center">2085.3</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Cone angles [<a href="/journals/isrn/2013/732629/#B12">12</a>] and electronic parameters [<a href="/journals/isrn/2013/732629/#B12">12</a>] of the <i>P</i>-ligands used here according to Tolman. 

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tab3

Table 3

Table 3: Influence of the Steric Demand of Coligands on the Catalytic Activity of Nickel(II) Complexes in the Copolymerization of Ethene and Carbon Monoxide 

Table 3 | Influence of the Steric Demand of Coligands on the Catalytic Activity of Nickel(II) Complexes in the Copolymerization of Ethene and Carbon Monoxide 