The crystal structure of 1,4-bis-(4-pyridyl)butadiyne and a study of its complexes with cobalt(II), nickel(II) and copper(II)

2-Methyl-4-(4-pyridyl)-3-butyn-2-ol: a two-dimensional hydrogen-bond network

“…The bond lengths within the pyridine rings (average C--C = 1.38, average N--C = 1.33 A) do not differ significantly from those of pyridine determined by electron diffraction [C--C= 1.39, N--C = 1.37 A (Schomaker & Pauling, 1939)] or of 1,4-bis(4-pyridyl)butadiyne [average C--C= 1.38, average N--C = 1.34 A (Allan, Barrow, Beaumont, Macindoe, Milburn & Werninck, 1988)]. The C~C bond lengths [1.191 (9), 1.190 (8) the distance of 1.201 (6) A in the above diyne or the distance of 1.197 A found from the single-crystal X-ray diffraction study of 2-methyl-4-phenyl-3-butyn-2-ol (Singelenberg & van Eijck, 1987 (Pimentel & McClellan, 1960).…”

Topochemical polymerization of diacetylenes

“…化合物G4不能发生拓扑聚合反应 [62] , 但是如果与化 合物H2形成共晶体系即可在紫外光或  射线辐射下 实现聚合 [63,64] . 主体分子H10与含有3个炔的客体分 子G7以2 : 1的比例形成共晶H10 2 /G7, 单体的堆积距 h后聚合完成 [49] .…”

The halogen-bonded adduct 1,4-bis(pyridin-4-yl)buta-1,3-diyne–1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8-hexadecafluoro-1,8-diiodooctane (1/1)

“…For the use of bis-(4-pyridyl)buta-1,3-diine in crystal engeneering based on hydrogen bonding and transition metal binding, see: Nakamura et al (2003); Curtis et al (2005); Maekawa et al (2000); Badruz Zaman et al (2001); Allan et al (1988). For NÁ Á ÁI halogen bonds based on ,!-diiodoperfluorocarbons, see: Neukirch et al (2005); Navarrini et al (2000); Liantonio et al (2003); Bertani et al (2002); Metrangolo et al (2004Metrangolo et al ( , 2008; Fox et al (2004); Dey et al (2009).…”

“…Bis-(4-pyridyl)buta-1,3-diine (1) (Allan et al, 1988) has been used as ditopic hydrogen bonding (HB) acceptor in crystal engineering (Nakamura et al, 2003;Curtis et al, 2005) and in transition metals complexes (Badruz Zaman et al, 2001;Maekawa et al, 2000), but it has never been used in halogen bonding (XB) adducts formation. Our group has shown that α,ω-diiodoperfluorocarbons are very good ditopic XB donors, both towards neutral (Fox et al, 2004) and ionic (Metrangolo et al, 2008) electron-donors.…”