A crystallographically isolated dimeric hydrolyzed chloro­phosphazene dianion

Single crystals of the title compound bis[bis­(1-ethyl-3-methyl-imidazol-2-yl­idene)silver(I)] 1,5,5,7,11,11-hexa­chloro-2,8-di­oxa-4,6,10,12,13,14-hexa­aza-1λ(5),3,5λ(5),7λ(5),9,11λ(5)-hexa­phospha­tricyclo­[7.3.1.1(3,7)]tetra­deca-1(13),4,7(14),10-tetra­ene-6,12-diide 3,9-dioxide, [Ag(C(6)H(10)N(2))(2)](Cl(6)N(6)O(4)P(6))(0.5), were isolated from the reaction of the silver N-heteocyclic carbene complex [Ag(C(6)H(10)N(2))(2)]Cl and hexa­chloro­cyclo­triphos­phazene [NPCl(2)](3 )in the presence of water. The asymmetric unit contains one silver carbene cation with the carbene ligands bound to the Ag(I) in an almost linear arrangement and one half of a hydrolyzed phosphazene dianion. The second cation and additional half of the anion are generated by an inversion center.