在乙腈介质中,除水剂原甲酸三乙酯存在下,合成了以Eu(Ⅲ),Eu(Ⅲ) La(Ⅲ),Eu(Ⅲ) Gd(Ⅲ)为中心,以冠醚(18 C 6)及对苯二甲酸为配体的同核铕及其铕 镧、铕 钆异核稀土配合物,并对其进行了元素分析、红外光谱分析及荧光性能的测定和研究。...在乙腈介质中,除水剂原甲酸三乙酯存在下,合成了以Eu(Ⅲ),Eu(Ⅲ) La(Ⅲ),Eu(Ⅲ) Gd(Ⅲ)为中心,以冠醚(18 C 6)及对苯二甲酸为配体的同核铕及其铕 镧、铕 钆异核稀土配合物,并对其进行了元素分析、红外光谱分析及荧光性能的测定和研究。发现空腔较大的18 C 6不仅可以与半径大的La3+离子配位,还可以与半径小的Eu3+和Gd3+离子配位。非荧光的La(Ⅲ),Gd(Ⅲ)对Eu(Ⅲ)的发光有较强的敏化作用,桥联配体对苯二甲酸根可有效地传送能量。与大多数铕配合物不同,所研究的配合物的5D0→7F0跃迁强度非常高。展开更多
Through the reaction of Co 2(CO) 8 with four ligands containing P ?S? N atoms, cobalt carbonyl sulfur clusters Co 3(CO) 7( μ 3-S)〔 μ,η 2 -CNC(CH 3) 2P(S)(Cl)N(Ph)](Ⅰ)and Co 3 (CO) 7( μ 3-S)〔 μ,η 2 -SC(NH2)N-N...Through the reaction of Co 2(CO) 8 with four ligands containing P ?S? N atoms, cobalt carbonyl sulfur clusters Co 3(CO) 7( μ 3-S)〔 μ,η 2 -CNC(CH 3) 2P(S)(Cl)N(Ph)](Ⅰ)and Co 3 (CO) 7( μ 3-S)〔 μ,η 2 -SC(NH2)N-N=CH-C 6H 5〕 (Ⅱ),two tetranu-clear cobalt carbonyl clusters Co 4(CO) 10( μ 4 -S)( μ 4 -PC 6H 4OCH 3)(Ⅲ) and Co 4(CO) 10( μ 4-S)( μ 4-PC 6H 4OC 2H 5)(Ⅳ) ,were prepared and characterized by elementary analysis?IR? 1HNMR and MS spectroscopy.It was shown that bothⅠand Ⅱ have a tetrahedral framework Co 3S , both Ⅲ and Ⅳ have a octahedral framework Co 4SP. (Ⅰ)and Co 3 (CO) 7( μ 3-S)〔 μ,η 2 -SC(NH2)N-N=CH-C 6H 5〕 (Ⅱ),two tetranu-clear cobalt carbonyl clusters Co 4(CO) 10( μ 4 -S)( μ 4 -PC 6H 4OCH 3)(Ⅲ) and Co 4(CO) 10( μ 4-S)( μ 4-PC 6H 4OC 2H 5)(Ⅳ) ,were prepared and characterized by elementary analysis?IR? 1HNMR and MS spectroscopy.It was shown that bothⅠand Ⅱ have a tetrahedral framework Co 3S , both Ⅲ and Ⅳ have a octahedral framework Co 4SP.展开更多
文摘在乙腈介质中,除水剂原甲酸三乙酯存在下,合成了以Eu(Ⅲ),Eu(Ⅲ) La(Ⅲ),Eu(Ⅲ) Gd(Ⅲ)为中心,以冠醚(18 C 6)及对苯二甲酸为配体的同核铕及其铕 镧、铕 钆异核稀土配合物,并对其进行了元素分析、红外光谱分析及荧光性能的测定和研究。发现空腔较大的18 C 6不仅可以与半径大的La3+离子配位,还可以与半径小的Eu3+和Gd3+离子配位。非荧光的La(Ⅲ),Gd(Ⅲ)对Eu(Ⅲ)的发光有较强的敏化作用,桥联配体对苯二甲酸根可有效地传送能量。与大多数铕配合物不同,所研究的配合物的5D0→7F0跃迁强度非常高。
文摘Through the reaction of Co 2(CO) 8 with four ligands containing P ?S? N atoms, cobalt carbonyl sulfur clusters Co 3(CO) 7( μ 3-S)〔 μ,η 2 -CNC(CH 3) 2P(S)(Cl)N(Ph)](Ⅰ)and Co 3 (CO) 7( μ 3-S)〔 μ,η 2 -SC(NH2)N-N=CH-C 6H 5〕 (Ⅱ),two tetranu-clear cobalt carbonyl clusters Co 4(CO) 10( μ 4 -S)( μ 4 -PC 6H 4OCH 3)(Ⅲ) and Co 4(CO) 10( μ 4-S)( μ 4-PC 6H 4OC 2H 5)(Ⅳ) ,were prepared and characterized by elementary analysis?IR? 1HNMR and MS spectroscopy.It was shown that bothⅠand Ⅱ have a tetrahedral framework Co 3S , both Ⅲ and Ⅳ have a octahedral framework Co 4SP. (Ⅰ)and Co 3 (CO) 7( μ 3-S)〔 μ,η 2 -SC(NH2)N-N=CH-C 6H 5〕 (Ⅱ),two tetranu-clear cobalt carbonyl clusters Co 4(CO) 10( μ 4 -S)( μ 4 -PC 6H 4OCH 3)(Ⅲ) and Co 4(CO) 10( μ 4-S)( μ 4-PC 6H 4OC 2H 5)(Ⅳ) ,were prepared and characterized by elementary analysis?IR? 1HNMR and MS spectroscopy.It was shown that bothⅠand Ⅱ have a tetrahedral framework Co 3S , both Ⅲ and Ⅳ have a octahedral framework Co 4SP.
