VANADIUM CHEMISTRY OF ASCIDIANS
VANADIUM CHEMISTRY OF ASCIDIANS
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DOI：
10.1016/0305-0491(89)90103-x
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发表时间：
1989-01-01
影响因子：
2.2
通讯作者：
PARRY, DL
中科院分区：
文献类型：
--
作者：
BRAND, SG;HAWKINS, CJ;PARRY, DL
将外源配体2，2“-联吡啶和1，10-邻菲咯啉加入到多种裸鳃海鞘和白蛉海鞘中，在隔室（包括印戒）和一些无色素的桑椹胚细胞中产生了深紫色的双（螯合）钒（III）氧桥双核配合物，证实了这些细胞中存在钒（III）。用乙酰丙酮处理形成[VO（acac）2]和[V（acac）3]。电子顺磁共振研究证实了钒（IV）存在于所有含钒的Aplousobranchs中，而在Phlebobranchs中很少或没有钒（IV），并确定了两种类型的钒（IV）与有机配体结合，其中“氧化”Phlebobranchs通常为I型，Aplousobranchs通常为II型。参数：I型，sbd.gx 1.992，戈伊1.987，gz 1.967，Ax 53.01，Ay 51.95，Az 155.47 ×104 cm-1; II型sbd.gx 1.980，戈伊1.985，gz 1.951，Ax 59.08，Ay 55.72，Az 166.68 × 104 cm-1; 104 cm-1。电镜观察表明，红腹红鱼的桑椹胚细胞内含有丰富的钒。
Addition of exogenous ligands, 2,2''-bipyridine and 1,10-phenanthroline, to a variety of aplousobranch and phlebobranch ascidians, produced deep purple oxo-bridged binuclear complexes of bis(chelate)vanadium(III) within compartment (including signet ring) and some unpigmented morula cells confirming the presence of vanadium(III) in these cells. Treatment with acetylacetone formed [VO(acac)2] and [V(acac)3]. Electron paramagnetic resonance studies confirmed the presence of vanadium(IV) in all vanadium-containing Aplousobranches, and little or no vanadium(IV) in the Phlebobranchs, and identified two types of vanadium(IV) binding to organic ligands with the ''oxidized'' Phlebobranchs generally of Type I and the Aplousobranchs generally of Type II with e.p.r. parameters: Type I.sbd.gx 1.992, gy 1.987, gz 1.967, Ax 53.01, Ay 51.95, Az 155.47 .times. 104 cm-1; Type II.sbd.gx 1.980, gy 1.985, gz 1.951, Ax 59.08, Ay 55.72, Az 166.68 .times. 104 cm-1. Electron microscopic investigation of the morula cells of the Phlebobranch, Ecteinascidia nexa, showed that the intracellular globules were rich in vanadium.