| ²é¿´: 341 | »Ø¸´: 1 | ||
| ±¾Ìû²úÉú 1 ¸ö ·ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴 | ||
xuewenbin½ð³æ (³õÈëÎÄ̳)
|
[ÇóÖú]
Ó¢Ò뺺
|
|
|
Molecular spin clusters continue to attract attention due to their potential applications in quantum computation, 1 magnetic refrigeration, 2 molecular spintronics 3 and as nanoscale magnets. 4 We have a long-standing interest in the synthesis of Ni(II) and Co(II) spin clusters using multidentate ligands. 5 Both Ni(II) and Co(II) ions are good candidates to generate spin clusters that display slow magnetic relaxation, i.e. single-molecule magnets (SMMs). 6,7 This is because both Ni(II) and Co(II) centres can display a large single-ion zero-field splitting (ZFS). 8,9 Bis-tris propane { 2,2¢-(propane-1,3-diyldiimino)bis[2- (hydroxymethyl)propane-1,3-diol], H 6 L, Scheme 1 } contains multiple binding sites and hence, excellent potential as a bridging ligand, although its main use is as a biological buffer. However, its use in cluster chemistry is rare. 10 Herein we report a Ni 4 cubane and a Co 5 complex that displays an unusual Co¨CO core topology. These represent the first Bis-tris propane-based complexes containing these metal ions: both complexes display ferromagnetic interactions leading to non-zero spin ground states for each cluster. |
» ²ÂÄãϲ»¶
ÇóbÇøÔºÐ£µ÷¼Á
ÒѾÓÐ3È˻ظ´
²ÄÁÏÓ뻯¹¤¿¼Ñе÷¼Á
ÒѾÓÐ8È˻ظ´
281Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
0854µç×ÓÐÅÏ¢Çóµ÷¼Á 324
ÒѾÓÐ4È˻ظ´
²ÄÁϵ÷¼Á
ÒѾÓÐ3È˻ظ´
Ò»Ö¾Ô¸¼ªÁÖ´óѧ²ÄÁÏÓ뻯¹¤303·ÖÇóµ÷¼Á
ÒѾÓÐ4È˻ظ´
294Çóµ÷¼Á²ÄÁÏÓ뻯¹¤×¨Ë¶
ÒѾÓÐ17È˻ظ´
271Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
Çóµ÷¼Á323²ÄÁÏÓ뻯¹¤
ÒѾÓÐ4È˻ظ´
²ÄÁÏѧ˶£¬Çóµ÷¼Á
ÒѾÓÐ9È˻ظ´
xineun
ľ³æ (СÓÐÃûÆø)
- ·ÒëEPI: 16
- Ó¦Öú: 10 (Ó×¶ùÔ°)
- ½ð±Ò: 8198.1
- ºì»¨: 4
- Ìû×Ó: 117
- ÔÚÏß: 131.8Сʱ
- ³æºÅ: 1389997
- ×¢²á: 2011-09-04
- ÐÔ±ð: GG
- רҵ: ½ðÊôÓлú»¯Ñ§
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¡ï
°®ÓëÓêÏÂ(½ð±Ò+1): 2011-10-20 20:08:10
xuewenbin(½ð±Ò+70, ·ÒëEPI+1): 2011-10-21 10:56:44
°®ÓëÓêÏÂ(½ð±Ò+1): 2011-10-20 20:08:10
xuewenbin(½ð±Ò+70, ·ÒëEPI+1): 2011-10-21 10:56:44
|
Êý×Ö¶¼ÊÇÒýÎÄÎÄÏ׵ıàºÅ°É......¸´ÖÆÕ³ÌùÒ²ÒªÉÔ΢±à¼Ò»Ï£¬Òª²»»áÎóµ¼±ðÈ˵Ä... ÓÉÓÚÆäÔÚÁ¿×Ó¼ÆËãÖÐDZÔÚµÄÓ¦Ó㬷Ö×Ó×ÔÐý´ØÊܵ½³ÖÐøµØ¹Ø×¢£º´ÅÐÔÀäÈ´£¬·Ö×Ó×ÔÐýѧºÍ×÷ΪÄÉÃ׳߶ȵĴÅÌå¡£³¤ÆÚÒÔÀ´£¬ÎÒÃǶÔÓÚʹÓÃòüºÏÅäÌåÀ´ºÏ³ÉNi(II)ºÍCo(II)×ÔÐý´ØºÜ¸ÐÐËȤ¡£ÓÉÓÚÆä´ÅÐÔ³ÚÔ¥£¬Ni(II)ºÍCo(II)Àë×Ó¶¼ÄܺܺõIJúÉú×ÔÐý´Ø£¬Èçµ¥·Ö×Ó´ÅÌå(SMMs)¡£ÕâÊÇÒòΪNi(II)ºÍCo(II)ÖÐÐÄÄÜÏÔʾ´óµÄµ¥Àë×ÓÁ㳡ÁÑ·Ö(ZFS)¡£Bis-tris propane { 2,2¢-(propane-1,3-diyldiimino)bis[2-(hydroxymethyl)propane-1,3-diol], H6L, Scheme 1}º¬ÓжàÖØÅäλµã£¬Òò´Ë¿É×÷ΪºÜºÃµÄÇÅÁ¬ÅäÌ壬ËäÈ»ËüÖ÷ÒªÓÃÓÚÉúÎﻺ³åÒº¡£¾¡¹ÜÈç´Ë£¬ËüÔڴغϻ¯Ñ§ÖеÄÓ¦Ó÷dz£Ï¡ÉÙ¡£ÕâÀÎÒÃDZ¨µÀÒ»¸öNiÁ¢·½ÍéºÍÒ»¸öÏÔʾ³ö²»Ñ°³£µÄCo-OºËÍØÆË½á¹¹µÄCo»¯ºÏÎï¡£ÕâЩÊǵÚÒ»¸ö»ùÓÚBis-tris propaneÅäÌåµÄÕâЩ½ðÊôÀë×ÓµÄÅäºÏÎÁ½¸öÅäºÏÎï¶¼ÏÔʾ³öÌú´Å×÷Óã¬Ã¿¸ö´ØºÏÎï¶¼Êǵ¼Ö·ÇÁã×ÔÐý»ù̬¡£ |
2Â¥2011-10-20 18:54:54













»Ø¸´´ËÂ¥