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本文以C_5H_5NiPPh_3Cl与Ph_2P(CH_2)_nPPh_2为起始物合成了C_5H_5NiPh_2P(CH_2)nPPh_2Cl·C_6H_6,再进一步与氢硼酸季铵盐反应,合成了12个氢硼酸π-环戊二烯基-烷撑双(二苯基膦)合镍(Ⅱ)化合物。对这些化合物进行了元素分析、红外光谱鉴定,并测定了氯化物的~1H NMR谱。所有含硼化合物于室温下对空气是稳定的,而它们的热稳定性与阳离子中螯合环的大小和氢硼酸根结构有关,即氢硼酸根相同的化合物,热稳定性随着螯合环的增大而降低;阳离子相同时,热稳定性次序是:[C_5H_5NiPh_2P(CH_2)_nPPh_2]_2B_(12)H_(12)>[C_5H_5NiPh_2P(CH_2)_nPPh_2]_2B_(10)H_(10)>C_5H_5NiPh_2P(CH_2)_nPPh_2B_(11)H_(14)>C_5H_5NiPh_2P(CH_2)_nPPh_2B_3H_8。
In this paper, C_5H_5NiPh_2P (CH_2) nPPh_2Cl · C_6H_6 was synthesized starting from C_5H_5NiPPh_3Cl and Ph_2P (CH_2) _nPPh_2 and further reacted with quaternary ammonium borohydride to synthesize π-cyclopentadienyl-alkylenebis (Diphenylphosphine) nickel (II) compound. The compounds were characterized by elemental analysis, IR spectroscopy and ~ 1H NMR spectra of the chlorides. All boron-containing compounds are stable to air at room temperature and their thermal stability is related to the size of the chelate ring in the cation and to the structure of the boronic acid, ie the same compound as the boronic acid, which is thermally stable with the chelating ring (C_5H_5NiPh_2P (CH_2) _nPPh_2] _2B_ (12) H_ (12)> [C_5H_5NiPh_2P (CH_2) _nPPh_2] _2B_ (10) H_ (10)> C_5H_5NiPh_2P ( CH_2) _nPPh_2B_ (11) H_ (14)> C_5H_5NiPh_2P (CH_2) _nPPh_2B_3H_8.