A NOVEL CONFORMATION FOR A COORDINATED MACROCYCLE - THE CRYSTAL-STRUCTURE OF [NI(1,4,7,10-TETRAAZACYCLODODECANE)(OH2)2](CLO4)2.H2O

被引：13

作者：

SCOTT, B

BREWER, KJ

SPREER, LO

CRAIG, CA

OTVOS, JW

CALVIN, M

TAYLOR, S

机构：

[1] WASHINGTON STATE UNIV,PULLMAN,WA 99164

[2] UNIV PACIFIC,DEPT CHEM,STOCKTON,CA 95211

[3] UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DEPT CHEM,BERKELEY,CA 94720

来源：

JOURNAL OF COORDINATION CHEMISTRY | 1990年 / 21卷 / 04期

关键词：

12-aneN4; conformation; Macrocycles; nickel(II); X-ray structure;

D O I：

10.1080/00958979009408193

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The complex [Ni(12-aneN4)(0H2)2](C104)2*H20 (12-aneN4 = 1, 4, 7, 10-tetraazacyclododecane) has been prepared and its structure determined. The complex crystallizes in the orthorhombic space group i521212lwith a = 11.173(5), 6= 11.976(5) and c = 13.969(4) A. The volume of the unit cell is 1869(1) A3. The total reflections collected for 2.0 20 50.0° were 1916 with 1895 being unique and 1659 used in the structure determination. Final values of R — 0.053 and Rw= 0.057 were obtained. Our results indicate that this six coordinate Ni(II) species has a cis or folded geometry and that the coordinated tetraazamacrocyclic lig and exhibits a conformation that is unprecedented in the literature. In this new conformation three of the hydrogens coordinated to the nitrogens point towards the metal centre while only one hydrogen coordinated to a nitrogen points away from the metal centre. © 1990, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：307 / 313

页数：7

共 34 条

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