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Assembly of a New Cyano‐bridged 4f‐3d Dimer Sm(DMSO) 4 ‐ (H 2 O) 3 Cr(CN) 6 and Crystal Structure of [K 3 (18‐crown‐6) 3 ‐(H 2 O) 4 ]Cr(CN) 6 ·3H 2 O
Author(s) -
BeiChuan Zhou,
HuiZhong Kou,
Yi He,
RuJi Wang,
YaDong Li,
HongGen Wang
Publication year - 2003
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20030210326
Subject(s) - triclinic crystal system , chemistry , monoclinic crystal system , crystallography , crystal structure , dimer , molecule , hydrogen bond , stereochemistry , organic chemistry
A new cyano‐bridged binuclear 4f‐3d complex Sm(DMSO) 4 ‐(H 2 O) 3 Cr(CN) 6 was synthesized and characterized by single crystal structure analysis. It crystallizes in monoclinic, space group P 2 1 with a =0.9367(2) nm, b = 1.3917(3) nm, c = 1.1212(2) run, β = 99.88(3)° and Z = 2. In this binuclear complex, Sm atom is eight coordinated and linked to the Cr atom by a cyano bridge. The molecules packs to form 3D structure due to the hydrogen bonds among them. [K 3 (18‐C‐6) 3 (H 2 O) 4 ]Cr(CN) 6 ·3H 2 O (18‐C‐6 represents 18‐crown‐6‐ether) that was synthesized as a byproduct in the preparation of a Gd—Cr complex is also structurally characterized. Crystal data: triclinic, space group P ‐l with a = 1.0496(7) nm, b = 1.1567(14) nm, c = 1.3530(13) nm, a = 94.15(9)°, β = 96.04(8)°, γ = 95.25(9)° and Z = l. [K 3 (18‐C‐6) 3 (H 2 O) 4 ]‐Cr(CN) 6 ·3H 2 O consists of ionic [K 3 (18‐C‐6) 3 (H 2 O) 4 ] 3+ and [Cr(CN) 6 ] 3‐ pairs, of which the [K 3 (18‐C‐6) 3 (H 2 O) 4 ] 3+ ion is a trinuclear duster connected by water, and K atoms are eight coordinated by eight oxygen atoms of one 18‐C‐6 and two water molecules.