Reactions of terephthalate with Co2(CO)8、Mo2Cp2(CO)4 and RuCo2(CO)11 and the crystal structure of [C6H4-p-(CO2CH2C2H-μ)2][CO2(CO)6]2

Abstract

Three organometallic complexes [C6H4 p (CO2CH2C2H μ )2]2(1)、 [C6H4 p (CO2CH2C2H)2][RuCo2(CO)9]2 (2) and [(HC2CH2OCO)C6H4 p (CO2CH2C2H μ )][Mo2Cp2 (CO)4](3) have been prepared from the reactions of dipropargyl terephthalate with Co2(CO)8, Mo2Cp2(CO)4 and RuCo2(CO)11. From their 1H NMR spectra, it is found that the deshielding effect of metal species on terminal alkyne follows RuCo2(CO)9 > Co2(CO)6 > Mo2(CO)4Cp2. The single crystal diffraction of compound 1 was undertaken with the data: triclinic,a=8.1392b=8.8083c=11.3433β=96.2606°V=773.443Z=1Dc=1.748g·cm-3R=0.0513wR=0.1266. 室温下对苯二甲酸二丙炔醇酯分别与Co2CO8Mo2Cp2CO4和RuCo2CO11反应得到三个有机金属化合物C6H4pCO2CH2C2Hμ2Co2CO621、C6H4pCO2CH2C2H2RuCo2CO922和HC2CH2OCOC6H4pCO2CH2C2HμMo2Cp2CO43。研究发现三种金属核对端炔氢的屏蔽作用依次为RuCo2CO9>Co2CO6>Mo2CO4Cp2。化合物1的晶体衍射发现属三斜晶系空间群a=8.1392b=8.8083c=11.3433β=96.2606°V=773.443Z=1Dc=1.748g·cm-3R=0.0513wR=0.1266。